Showing papers on "Inorganic compound published in 2013"

Universal equation for argon gas cluster sputtering yields.

Abstract: An analysis is made of the sputtering yields of materials for argon gas cluster ion beams used in SIMS and XPS as a function of the beam energy, E, and the cluster size, n. The analysis is based on the yield data for the elements Si and Au, the inorganic compound SiO2, and the organic materials Irganox 1010, the OLED HTM-1, poly(styrene), poly(carbonate), and poly(methyl methacrylate). The argon primary ions have cluster sizes, n, in the range 100–16 000 and beam energies, E, from 2.5 to 80 keV. It is found that the elemental and compound data expressed as the yields, Y, of atoms sputtered per primary ion may all be described by a simple universal equation: Y/n = (E/An)q/[1 + (E/An)q−1] where the parameters A and q are established by fitting. The sputtering yields of the three organic materials are given as yield volumes expressed in nm3. For these, an extra parameter B is included multiplying the right-hand side of the equation where B is found by fitting to be of the order (0.18 nm)3 to (0.26 nm)3. This...

Preparation method of P(VDF-HFP) (Poly(Vinyl Fluoride-Hexafluoropropylene)) inorganic compound porous nano fiber lithium ion battery separator

Abstract: The invention relates to a preparation method of a P(VDF-HFP) [Poly(Vinyl Fluoride-Hexafluoropropylene)] inorganic compound porous nano fiber lithium ion battery separator. The method comprises the following specific steps of: (1) adding P(VDF-HFP) and PEG (Polyethylene Glycol) into an organic solvent; heating and agitating to dissolve to form a transparent solution; cooling the solution to be at room temperature; and dispersing inorganic nano grains into the solution by agitation and ultrasonic treatment to obtain a spinning solution; (2) statically spinning the obtained spinning solution to obtain a primarily-formed P(VDF-HFP) inorganic compound porous nano fiber membrane; and (3) immersing the primarily-formed P(VDF-HFP) inorganic compound porous nano fiber membrane into distilled water to remove the PEG; and carrying out drying treatment to obtain the P(VDF-HFP) inorganic compound porous nano fiber lithium ion battery separator. The lithium ion battery separator prepared by using the preparation method disclosed by the invention has high liquid absorption rate and good electrochemical stability, and has a good heat-resisting shrinkage performance.

Phosphor, method for manufacturing same, light emitting device, and image display device

Abstract: A chemically and thermally stable phosphor having unconventional light emitting properties and high light emitting intensity with an LED of 470 nm or less, includes an inorganic compound comprising: a crystal designated by A 3 (D,E) 8 X 14 , a crystal designated by Sr 3 Si 8 O 4 N 10 or an inorganic crystal having the identical crystal structure of the Sr 3 Si 8 O 4 N 10 crystal, which comprises A element, D element, X element, and optionally E element if necessary (A is one or more kinds selected from Li, Mg, Ca, Sr, and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr, and Hf; X is one or more kinds selected from O, N, and F; and E is one or more kinds selected from B, Al, Ga, In, Sc, Y, and La.), into which M element is solid-solved (M is one or more kinds selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb.).

Metal surface treatment agent and metal material obtained through processing with same

Abstract: The invention relates to a metal surface treatment agent used for forming a surface treatment coating. Even if a resin film is laminated onto a substrate surface made from stainless steel, and molding is subsequently carried out, the metal surface treatment agent imparts a high adhesion to the laminate film, so that the laminated film is prevented from peeling and can maintain a stable adhesion over the long term, regardless of exposure to high-boiling gas atmosphere, solvent and acid. The metal surface treatment agent contains a Cr(III) compound (A), and at least one type of compound (B) selected from an inorganic compound (b1), a film-forming inorganic compound (b2) and an organic chelate compound (b3) which can bond to Cr (III) compound (A) to form a film. The organic compound (b1) has film-forming properties and is at least one from an anion compound and a nonionic compound. If the metal Cr equivalent mass of compound Cr (III) compound (A) is set to M, and the mass of compound (B) is set to N, the ratio N/M is set to fall within the range of 0.005 to 1.

Fluorophore, method for producing same, light-emitting device, and image display device

Abstract: Provided is chemically and thermally stable phosphor having light-emitting characteristics different from the conventional phosphor and high emission intensity when combined with LED of not exceeding 470 nm. The phosphor comprises inorganic compound having crystal represented by A2(D,E)5X9; crystal represented by Ca2Si5O3N6; or inorganic crystal having the same crystal structure as crystal represented by Ca2Si5O3N6, which includes A, D, E, and X elements (A is one or more kinds selected from Mg, Ca, Sr, and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr, and Hf; E is one or more kinds selected from B, Al, Ga, In, Sc, Y, and La; and X is one or more kinds selected from O, N, and F), in which M element (M is one or more kinds of elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) is solid-solved.

Positive-Electrode Active Material, Manufacturing Method Of The Same, And Nonaqueous Electrolyte Rechargeable Battery Having The Same

Abstract: A positive-electrode active material for a non-aqueous electrolyte rechargeable battery includes a core portion and a shell portion. The core portion includes at least one of an inorganic oxide having a polyanionic structure and an inorganic compound oxide having a polyanionic structure and including a carbon. The shell portion includes a carbon and covers the core portion. The positive-electrode active material has a property that indicates a continuous pore distribution curve in a graph where a horizontal axis represents a pore diameter and a vertical axis represents a log differentiation pore volume. The positive-electrode active material is manufactured by wet-cracking the inorganic oxide or the inorganic compound oxide with an organic acid solution, and sintering a cracked substance in an inert atmosphere.

Organic and inorganic compound fertilizer for kiwi fruits and preparation method thereof

Abstract: The invention discloses an organic and inorganic compound fertilizer for kiwi fruits. The organic and inorganic compound fertilizer comprises organic fertilizer base materials and inorganic chemical fertilizers; the organic fertilizer base materials are prepared through mixing chicken manure with rape seed cakes according to the dry weight ratio of (1.74-2.21): 1 and carrying out composting fermentation for 20 days; and the organic and inorganic compound fertilizer is prepared through mixing the organic fertilizer base materials with urea, monoammonium phosphate and potassium chloride according to the dry weight ratio of (12.82-13.69): (2.01-2.07): (1.80-2.15): (2.01-2.56), drying, granulating, sieving and packaging. According to the organic and inorganic compound fertilizer for the kiwi fruits, as organic matters and inorganic matters are combined, the organic and inorganic compound fertilizer not only provides comprehensive nutritional needs for the growth of the kiwi fruits, but also is conducive to the improvement of the soil structure and the increase of the fertilizer utilization ratio, so that the yield and quality of the kiwi fruits can be remarkably improved; and meanwhile, the resource utilization of agricultural wastes is realized, and the preparation cost of the fertilizer is low, so that the organic and inorganic compound fertilizer has good economic and ecological environmental benefits.

Method for producing composition for optical material

Abstract: According to the present invention, a composition for optical material, which is capable of providing a homogeneous optical material, can be prepared through pre-polymerization reaction between (a) an inorganic compound having a sulfur atom and (b) an episulfide compound using a hindered amine as a catalyst, followed by mixing with (c) a polythiol compound and (d) a polyisocyanate compound. Moreover, this composition for optical material can be polymerized and cured to thereby provide an optical material having high refractive index (ne of 1.73 or higher), high strength (an elongation of 13% or more in three-point bend test and good drilling resistance), and high heat resistance (a softening point of 70° C. or higher, as measured by TMA).

Separator and lithium secondary battery

Abstract: PURPOSE: A lithium battery is provided to have improved initial efficiency and lifetime performance and to remarkably improved thermal shrinkage, thereby improving thermal stability. CONSTITUTION: A separator includes a coating layer which comprises a porous substrate; an inorganic compound, a binder polymer, and an inorganic and organic binder. The coating layer includes 70 parts by weight or less of the inorganic compound per 100.0 parts by weight of the binder polymer. The inorganic compound is a particle the average particle diameter of which is 1-1000 nm. A lithium secondary battery (100) comprises a positive electrode (114) including a positive active material; a negative electrode (112) including a negative active material; a nonaqueous liquid electrolyte; and the separator (113).

Low-temperature preparation method of TiO2-based organic/inorganic compound photocatalysis flexible film

Abstract: The invention discloses a low-temperature preparation method of a TiO2-based organic/inorganic compound photocatalysis flexible film. The method comprises the following steps of: adjusting the pH value of a water solution containing a titanium salt with inorganic alkali; dissolving a regular titanic acid precipitate with hydrogen peroxide to obtain a clear and transparent titanium peroxide solution, heating or adding a catalyst for removing free oxygen from a titanium peroxide solution; mixing the solution with a polymer emulsion to obtain uniformly-mixed compound material emulsion; and forming a film on the surface of an organic flexible substrate, and performing thermal treatment to form a film material with a photocatalysis performance. The TiO2-based organic/inorganic compound photocatalysis flexible film has multiple functions of photocatalysis, antibiosis and super hydrophilicity; and in addition to the formation of a film on the conventional rigid substrate, a very good film forming condition is created particularly on the organic flexible substrate due to the adoption of a low-temperature preparation process, so that the application field of the film is greatly expanded.

Magnetic inorganic composite, preparing method of the same, and uses the same

Abstract: The present invention relates to a magnetic inorganic compound, a method for manufacturing the magnetic inorganic compound, and use thereof. The magnetic inorganic compound according to the present invention is capable of being harmless to human bodies, manufacturing the magnetic inorganic compound which is physically and chemically stable in comparison with existing magnetic particles, and being efficiently used in a field such as catalyst supporters, drug carriers, magnetic resonance imaging (MRI) contrast agents, and biosensors in which the magnetic inorganic compound can be used. [Reference numerals] (AA) Mesoporous Silica sphere (MSS);(BB) MMS including a FeCo precursor

Fluorophore, method for producing same, light-emitting device using fluorophore, image display device, pigment, and ultraviolet absorbent

Abstract: Provided is fluorophore comprising: inorganic compound having: an inorganic crystal, where M element (M is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) is solid solved, having the same crystal structure as the crystal represented by Ca 2 Si 5 O 3 N 6 (including Ca 2 Si 5 O 3 N 6 crystal or a solid solution thereof where one or more elements selected from Mg, Sr, Ba, Ge, Sn, Ti, Zr, Hf, B, Al, Ga, In, Sc, Y, La, and F are solid solved) and comprising: A element, D element, X element, and, if necessary, E element (A is one or more elements selected from Mg, Ca, Sr, and Ba; D is one or more elements selected from Si, Ge, Sn, Ti, Zr, and Hf; E is one or more elements selected from B, Al, Ga, In, Sc, Y, and La; and X is one or more elements selected from O, N, and F).

Phosphor, method for producing the same, light-emitting device and image display device

Abstract: PROBLEM TO BE SOLVED: To provide a phosphor that has a high emission intensity and is chemically and thermally stable when combined with an LED having ≤470 nm.SOLUTION: A phosphor comprises an inorganic compound which contains elements of A, D, E and X (A is at least one element selected from Mg, Ca, Sr and Ba, D is at least one element selected from Si, Ge, Sn, Ti, Zr and Hf, E is at least one element selected from Al, Ga, In, Sc, Y and La an X is at least one element selected from O, N and F) and in which M (M is at least one element of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Yb) forms a solid solution in any crystal of an N crystal containing a structure of AB(D, E)X, a structure of A(D, E)Xor a structure of (1-x)AB(D, E)X+xA(D, E)X(0≤x≤1), an inorganic crystal having the same crystal structure as the N crystal and a solid solution crystal of these crystals.

Large-particle humic acid organic and inorganic compound fertilizer

Abstract: The invention provides a large-particle humic acid organic and inorganic compound fertilizer and belongs to the technical field of efficient compound fertilizers for agriculture. According to the large-particle humic acid organic and inorganic compound fertilizer, a sodium hydroxide solution and a humic acid raw ore are mixed to react; the humic acid raw ore is activated and activated slurry is dispersed and sprayed on a mixture of a raw material fertilizer comprising nutrients of nitrogen, phosphorus and potassium, and the humic acid raw ore; the granulation is carried out in a rotary drum; then steps of drying, cooling, sieving and packaging are carried out; an unqualified part is crushed and returned for a production step; and the content of an organic matter in the produced large-particle humic acid organic and inorganic compound fertilizer is more than 30%. According to the large-particle humic acid organic and inorganic compound fertilizer disclosed by the invention, the defect that large-scale production of the organic and inorganic compound fertilizer is difficult to realize since fowl and livestock excrement, rice husks, cake dregs, wheat straws and the like are taken as raw materials can be solved; and the intensification and the large scale for producing the particle organic and inorganic compound fertilizer are realized.

Ternary inorganic compound crystal and preparation method and application thereof

Abstract: Provided is a ternary inorganic compound crystal having a molecular formula of Ca 8 Al 12 P 2 O 31 , and a preparation method thereof comprising the following steps: weighing calcium salts, aluminum salts and phosphate respectively according to the molar ratio of calcium, aluminum and phosphorus in the molecular formula Ca 8 Al 12 P 2 O 31 ; calcining at 1550˜1570° C., cooling, and grinding to obtain the ternary inorganic compound crystal. Also provided is an application of the ternary inorganic compound in gelling materials and molecular sieves, nonlinear optical crystals, and photochromic materials.

Organic light emitting device and manufacturing method of the same

Abstract: PROBLEM TO BE SOLVED: To provide an organic light emitting device having a protection layer that reduces and resolves film defects such as the density reduction and the film thickness reductionSOLUTION: An organic light emitting device 1 is composed of: a substrate 10; a display part 2 provided on the substrate 10; a sealing member provided at an outer edge (a sealing region 4) of the display part 2; an organic material member (an organic planarized layer 15, a pixel separation film 25, and an organic compound layer 22) provided between the display part 2 and the sealing member; and a protection layer 40 covering the display part 2 and the organic material member The display part 2 has an organic light emitting element 20 provided on the substrate 10 and formed by laminating a lower electrode 21, the organic compound layer 22, and an upper electrode 23 in this order In the organic light emitting device 1, an inorganic compound layer 30 is provided on the organic light emitting element 20 and the organic material member, and the protection layer 40 is provided on the inorganic compound layer 30 The protection layer 40 is formed by an atomic layer deposition method

The observation of scintillation in a hydrated inorganic compound: CeCl3·6H2O

Abstract: We have recently reported the discovery of a family of rare-earth metal-organic single-crystal scintillators based on Ce3+ as the activator ion. Starting with the CeCl3(CH3OH)4 prototype, this family of scintillators has recently been extended to include complex metal-organic adducts produced by reacting CeCl3 with heavier organics (e.g., isomers of propanol and butanol). Some of these rare-earth metal-organic materials incorporated waters of hydration in their structures, and the observation of scintillation in these hydrated compounds was an original finding for any solid scintillator. In the present work, we report the observation of gamma-ray-excited scintillation in an inorganic hydrated material, namely, single-crystal monoclinic CeCl3·6H2O. This observation shows that the mechanisms of the various scintillation energy-transfer processes are not seriously inhibited by the presence of waters of hydration in an inorganic material and that the observation of scintillation in other hydrated inorganic compounds is not precluded.

Improved porous bodies comprised of mullite and methods of forming them

Abstract: A porous ceramic body useful for making particulate filters is comprised of acicular mullite grains bound together by a ceramic grain boundary phase, wherein said porous acicular mullite body has a bulk carbon content from 0.005% to 10% by weight of the body. The porous body may be made by forming a mixture of mullite precursors (e.g., alumina and silica) and a compound that is inorganic carbon (graphitic or amorphous), inorganic compound that contains carbon (e.g., metal carbide) or an organic compound that decomposes to form inorganic carbon or an inorganic compound that contains carbon and heating in an atmosphere containing fluorine to form the acicular mullite body and removing the fluorine.

Organic/inorganic compound fertilizer for improving phosphorus use efficiency and preparation method thereof

Abstract: The invention provides an organic/inorganic compound fertilizer for improving phosphorus use efficiency. The compound fertilizer consists of the following components according to parts by weight: 4.0-5.0 parts of organic combined phosphatic fertilizer, 2.0-3.0 parts of urine, 1.8-2.5 parts of potassium sulfate, 0.6-0.8 part of modified humic acid, 0.4-0.5 part of zeolite powder, 0.08-0.15 part of an ammonium citrate solution, and 0.03-0.07 part of a polyglutamic acid solution. According to the compound fertilizer provided by the invention, the inorganic phosphorus is combined onto an organic molecular structure in the form of a phosphate ion, so that the immobilization of the phosphate ion in the soil is reduced; through modifying the humic acid, the quantity of active functional groups of the humic acid is increased, and by adding two phosphorus activating agents of zeolite powder and ammonium citrate, the phosphorus activating effect is enhanced; and through the addition of water-retaining agent polyglutamic acid, the fertilizer can improve water retaining performance, water permeability and air permeability of the soil, enhances mobility of the phosphorus in the soil, and improves granular structure of the soil.

Method for the separation of diamond particle clusters

Abstract: A method for the separation of diamond particle clusters into discrete diamond particles and/or into smaller diamond particle clusters comprising fewer diamond particles is disclosed. The diamond particle clusters are combined with at least one liquid phase organic or inorganic compound, or with a solution of at least one organic or inorganic compound in at least one solvent to form a reaction mixture. Mechanical means are then used to separate the diamond particle clusters into discrete diamond particles and/or into smaller clusters within the reaction mixture producing diamond particles with dangling bonds or free bonding sites on the surface of the diamond particles. The at least one organic or inorganic compound then reacts with these dangling bonds present on the diamond particle surface. The surfaces of the diamond particles are functionalised by the reaction with the organic or inorganic compounds and the diamond particles and/or smaller clusters produced are well dispersed in dry powder form, as well as in solution.

Organic and inorganic compound fertilizer and preparation method thereof

Abstract: The invention discloses an organic and inorganic compound fertilizer and a preparation method thereof. The organic and inorganic compound fertilizer comprises the components in parts by weight as follows: 24 parts of urea, 16 parts of MAP (monoammonium phosphate), 20 parts of potassium sulphate, 25 parts of humic acid, 10 parts of tobacco powder and 5 parts of bentonite, wherein the materials are weighted according to the parts by weight, mixed and stirred uniformly; the materials are fermented at the temperature of 70 DEG C for 13 days, and the pH value is controlled to be in a range from 6 to 7 during fermentation; and the materials are granulated, dried and filtered after fermented. The proportion of organic ingredients and inorganic ingredients in a formula of the organic and inorganic compound fertilizer is moderate, released nutrient are coordinated with crop growth, the utilization rate of the effective ingredients of the organic and inorganic compound fertilizer is larger than 55%, the effect that the effective ingredients promote crops to increase production is remarkable, and the bentonite is added, so that the forming effect is good during granulation of the organic and inorganic compound fertilizer; and the waste tobacco powder is turned into wealth, and pollution caused by the application of the fertilizer to soil and air can be relieved.

Treatment liquid for forming chromium-free black chemical conversion film and method for forming black chemical conversion film using the same

Abstract: PROBLEM TO BE SOLVED: To stably form a chromium-free chemical conversion film having excellent corrosion resistance and uniform luster appearance regardless of a shape of a plating member and execution of heat treatment after plating.SOLUTION: A zinc plating member and zinc alloy plating member are subjected to immersion treatment by an acidic reaction type chemical conversion treatment liquid containing a vanadium group compound, a rare earth ion, a nitrite ion, optionally one metal compound including one or more selected from Fe, Mg, Ca, Ni, Co, Zn, Y, La, Mo, W, Ti, Al, Zr, Mn, and optionally a silicon compound. Furthermore, optionally a coating film including inorganic, organic, or organic and inorganic compound or a multilayer coating film thereof is formed on a protective coating film after the object to be treated is cleaned by water.

Biological organic/inorganic compound fertilizer

Abstract: The invention discloses a biological organic/inorganic compound fertilizer consisting of the following components by weight: 35 parts of peat, 25 parts of urea, 17 parts of diammonium phosphate, 16 parts of potassium sulfate, 3 parts of magnesium sulfate, 0.5 part of borax, 0.2 part of copper sulfate, 0.1 part of zinc sulfate, 0.2 part of manganese sulfate, 0.1 part of ammonium molybdate and 2 parts of bentonite; and the biological organic/inorganic compound fertilize further comprises functional bacteria fermentation broth and photosynthesis liquid. The product takes full use of magnesium and sulfur elements and can loosen the soil to promote the growth and development of leaf, branch and root systems of plants so that root systems of plants can grow very well, the plants can absorb nitrogen and phosphorus elements from the soil and the biological enzyme activation can be promoted. Peat serving as a main raw material, biological nitrogen, phosphorus and potassium types and trace elements are combined into the biological organic/inorganic compound fertilizer. The product quality meets the organic/inorganic compound fertilizer standards specified in national standard GB18877-2009.

The technique of Raman spectroscopy in the characterization physical, chemical and structural ferroelectric of the materials

Abstract: The ferroelectric ceramics have been one of the most studied compounds in the literature both in obtaining the same growth as in behavior of chemical and physical properties. In its growth the materials can go through other phases or to change their magnetic ferroelectric properties due to vacancies generated as PbTiO3 material. This material structural changes its phase also applying pressure with temperature, concentration and allowing anharmonic study behavior [1]. Raman spectroscopy is a technique which provides high resolution in seconds chemical and structural information of almost any organic or inorganic compound. As a technique which does not require a special atmosphere or vacuum, is one technique that has been used extensively in the characterization of ferroelectric materials in particular of PbTiO3.

Fabricating method of alkaline earth metal silicate phosphor particle with coating film

Abstract: This invention provides a fabricating method of an alkaline earth metal phosphor particle with a coating film, wherein the coating film has a high moisture resistance and water resistance and a high luminescence property. The fabricating method includes performing a pretreatment step to the alkaline earth metal phosphor particle containing a strontium by an alkaline earth metal compound solution with a concentration of a strontium compound which is 1 to 15 mass% and a pH value of 6 to 10 as relative to the alkaline earth metal phosphor particle. Then a base layer of an aluminum organic metal compound and a portion of a hydrolyaed silane organic metal compound are formed on a surface of the pretreated phosphor particle, and then a drying and heating treatment is preformed, so that the coating film including an amorphous inorganic compound with Si and O as main components is formed on the surface.

Phosphate fluorescent substance

Abstract: PROBLEM TO BE SOLVED: To provide a new fluorescent substance in which composition of an inorganic compound (a base body) for fetching a luminescent center is replaced with a new inorganic compound to change the interaction between the luminescent center and an electron of the base body so that the fluorescent brightness thereof can be kept nearly equal to those of the conventional phosphors while decreasing the weight fraction of a rare earth metal being the luminescent center.SOLUTION: The new fluorescent substance has the compositional formula: (MZ)R(PO)(wherein M is Li, Na, K, Rb or Cs; Z is Eu or Tb; R is Y, Sc, Al or Ga; 0

Si etching solution

Abstract: The purpose of the present invention is to provide an etching liquid and an etching method in which a silicon layer can be etched at a practical speed using wet etching, in which low contents of a nitrogen-containing compound and a fluorine compound are used, and minimize the amount of side etching, whereby a satisfactory etching shape can be obtained An etching liquid for etching a silicon layer, the etching liquid being characterized in containing 01-30 wt% of a nitrogen-containing compound, a fluorine compound, and one or more types of acidic solvent selected from the group consisting of a phosphorous-containing compound, a sulfur-containing inorganic compound, and an organic compound having a sulfo group

Supported catalyst for olefin polymerization, as well as preparation method and application thereof

Abstract: The invention relates to a supported catalyst for olefin polymerization, as well as a preparation method and an application thereof. The catalyst comprises a double-silicon double-bridge metallocene compound, an aluminum alkyl or aluminoxane compound or a mixture thereof and an inert inorganic compound carrier. The preparation method comprises steps of: completing the reaction of the inorganic compound carrier with the aluminum alkyl or aluminoxane compound at a reaction temperature of 80 DEG C-110 DEG C according to a weight ratio of (1:1)-(1:5); dissolving the double-silicon double-bridge metallocene compound into a methylbenzene solvent, adding the mixture into the liquid of the inorganic compound carrier and the aluminum alkyl or aluminoxane at the reaction temperature of 0 DEG C-60 DEG C according to a weight ratio of double-silicon double-bridge metallocene compound to inorganic compound carrier of (1:3)-(1:10), then removing the solvent, filtering, washing and pumping at reduced pressure so as to obtain the catalyst. The catalyst can be used for olefin polymerization or the polymerization of ethylene and alpha-olefin with 3-20 carbon atoms, and the content of the alpha-olefin in a copolymer is high.