The invention discloses a measuring method and a device for simultaneously measuring the membrane permeability of each gas in mixed gas. According to the measuring method and device, the combination of a gas chromatograph and a gas permeation tank for measuring the membrane permeability is realized, and the permeabilities of multiple components of a thin film and a flake material when the mixed gas permeates through the thin film and the flake material can be simultaneously and rapidly measured accurately one time; furthermore, in a connecting method disclosed by the invention, an air blowing system does not need to be arranged, the measuring method can be used for measuring the thin film with the diameter of 8mm or even smaller without that the gas passes through a quantitative feeding device, and a gas chromatography flame ionization detector has the enough sensitivity for measuring penetration gas after permeating for 5 minutes. By utilizing the measuring method and device, the interaction effect of each component to the permeation rate can be researched when the mixed gas permeates, and the diffusion coefficients of the solubility coefficients of the thin film and the flake material can be conveniently measured.

Measuring method and device for simultaneously measuring membrane permeability of each gas mixed gas

The invention discloses a preparation method of a rhodium catalyst with 1,5-cyclooctadiene/L-alanine as a ligand. The method includes following steps: placing RhCl3.3H2O (50mg, 0.239mmol) into an oblique two-mouth flask and filling the flask with a mixed solvent containing ethanol (3.0ml) and water (1.0ml) with stirring until the RhCl3.3H2O is dissolved completely; adding 1,5-cyclooctadiene (0.2ml, 19.6 mmol), performing stirring for 30 min, increasing the temperature to 60 DEG C for reflux so that a precipitation is generated after the reaction finished, and washing the precipitation through ethanol for three times to obtain a [Rh(cod)Cl]2 catalyst; filling a reagent bottle with L-alanine (13.20mg, 0.13 mmol) and sodium hydroxide (5.50mg, 0,13 mmol), adding deionized water (0.6ml), performing stirring until the L-alanine and the sodium hydroxide are dissolved to obtain a reagent A; placing the [Rh(cod)Cl]2 (30mg, 0.06 mmol) into an oblique two-mouth flask with nitrogen being added for protection; filling the oblique two-mouth flask with 3ml of methanol for dissolving the L-alanine and the sodium hydroxide; and filling the oblique two-mouth flask with the reagent A with stirring for 90 min; performing rotary evaporation after the reaction finished for removing a minor part of the solvent, placing a product in a refrigerator for cooling for two days to enable a precipitation to precipitate out, performing a vacuumizing drying process and then detecting the product. The rhodium complex catalyst, when being used for catalyzing polymerization of substituted acetylene, can further increase polymerization conversion ratio and stereoselectivity.

Preparation of rhodium catalyst with 1, 5-cyclooctadiene/ L - phenylalanine as ligand

The invention discloses a zinc complex and a preparation method thereof as well as the application of the zinc complex as a near ultraviolet photoluminescence material, and belongs to the technical field of synthesis of chemical novel materials The chemical formula of the complex is [Zn(C6H5N2O2)2]n; the zinc complex belongs to a tetragonal system, the space group is P4(3)2(1)2(No96), and unit cell parameters are that both a and b are equal to 78691 (1), (the formula is shown in the description) alpha, beta and gamma are all 90 degrees and z is equal to 4 The zinc complex is prepared by adopting a solvothermal method The synthesis process of the zinc complex disclosed by the invention has the advantages of simplicity, feasibility, good reproducibility, easiness in implementation, abundant raw material sources and wide range in application; the zinc complex which can be used as the near ultraviolet luminescent material is applied to various fields of scientific experiments, drug production and research, and the like

Zinc complex and preparation method thereof as well as application of zinc complex as near ultraviolet photoluminescence material

The invention discloses a preparation method of a rhodium catalyst by using 2,5-norbornadiene (nbd) and 2-aminonicotinic acid as ligands. The preparation method comprises the following steps: taking 26 mg of 2-aminonicotinic acid and 40 mg of potassium hydroxide into a reagent bottle, adding 1.0-2.0 mL of deionized water, and stirring for dissolving; taking 45 mg-55mg of Rh Cl3.3H2O in an inclined two-port flask, injecting 3.0 mL of alcohol and 1.0 mL of a mixed solvent in the presence of a nitrogen gas, and stirring until dissolving completely; adding 0.10 mL-0.20 mL of 2,5-norbornadiene (nbd), stirring for 30 minutes, then heating to 60 DEG C, refluxing, and stirring until liquor is yellow; when 3 hours later, placing under the room temperature and stirring. The novel rhodium complex catalyst obtained by the preparation method disclosed by the invention can be used for further improving the polymerization conversion rate and stereoselectivity while catalyzing substituted acetylene to polymerize.

Preparation method of rhodium catalyst by using 2,5-norbornadiene (nbd) and 2-aminonicotinic acid as ligands

The utility model discloses a gas permeability testing device on a gas permeameter. An experiment gas channel of a testing cavity of the gas permeameter is formed in an upper cavity plate and is communicated with an upper cavity; the two sides of a test sample area between the upper cavity plate and a lower cavity plate are respectively provided with a sealing rubber gasket; a three-way pipeline is arranged at the bottom end of a one-way carrier gas channel communicated with a lower cavity; and the tail end of one pipeline of the three-way pipeline is provided with a gas chromatograph connecting pipe sleeve. The gas permeability testing device has the beneficial effect of qualitatively and quantitatively testing the permeation capacity of all components of mixed gas in a separating membrane at the same time by virtue of a connecting channel between the testing device and a gas chromatograph inlet, thus solving the technical problem that an existing permeameter for testing a macromolecular gas separating membrane can only test parameters of single gas in the separation membrane.

Li Fajia

Papers

Preparation method of rhodium catalyst by using 2,5-norbornadiene (nbd) and 2-aminonicotinic acid as ligands

Gas permeability testing device on gas permeameter