Patent
Preparation of porous crystalline synthetic material comprised of silicon and titanium oxides
TLDR
In this paper, a porous crystalline synthetic material constituted by silicon and titanium oxides, called titanium silicalite or TS-1, is described. But the use of this material as a catalyst is restricted to a specific application, such as alkylation of toluene with methanol or benzene with ethylene or ethanol.Abstract:
This invention relates to a porous crystalline synthetic material constituted by silicon and titanium oxides, a method for synthesizing said material, and the use thereof as a catalyst Said material is given the name titanium silicalite or TS-1, and corresponds to the following formula: xTiOsub2(1-x)SiOsub2 where x lies between 00005 and 004, preferably between 001 and 0025 The material is prepared starting from a mixture constituted by a source of silicon oxide and a source of titanium oxide The reaction takes place in the aqueous phase at a temperature of 130° to 200° C, and the solid product obtained is calcined in air at 550° C The TS-1 can be used for alkylation of toluene with methanol, or benzene with ethylene or ethanol, disproportioning of toluene to produce paraxylol, for cracking, hydrocracking, isomerization of n-paraffins and naphthenes, reforming, isomerization of substituted polyalkyl aromatics, disproportioning of aromatics, conversion of dimethylether and/or methanol or other alcohols to hydrocarbons, polymerization of compounds containing olefine or acetylene bonds, conversion of aliphatic carbonyl compounds into at least partly aromatic hydrocarbons, separation of ethyl benzene from other C 8 aromatic hydrocarbons, hydrogenation and dehydrogenation of hydrocarbons, methanation, oxidation, dehydration of aliphatic compounds containing oxygen, and conversion of olefines into compounds of high octane numberread more
Citations
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Journal ArticleDOI
Chemical and Technical Aspects of Propene Oxide Production via Hydrogen Peroxide (HPPO Process)
TL;DR: In this article, the state of the art of the scientific knowledge and technical aspects related to propene oxide synthesis in the presence of TS-1 catalyst have been reviewed and compared.
Journal ArticleDOI
Tin-containing silicates: structure-activity relations
TL;DR: In this article, four different stannosilicates have been investigated: Sn-BEA, Sn-MFI, SnMCM-41 and Sn-SBA-15.
Journal ArticleDOI
Direct Oxidation of Propylene to Propylene Oxide with Molecular Oxygen: A Review
Sheima J. Khatib,S. T. Oyama +1 more
TL;DR: In the presence of only molecular oxygen as oxidant and in absence of reducing agents, a number of liquid-phase and gas-phase catalytic reactions have been reported as discussed by the authors.
Patent
Process for the direct oxidation of olefins to olefin oxides
TL;DR: In this article, a process and a catalyst for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to the corresponding Olefin Oxide is described.
Journal ArticleDOI
Lewis Acid Zeolites for Biomass Conversion: Perspectives and Challenges on Reactivity, Synthesis, and Stability
TL;DR: A molecular-based approach is used to provide insight into the relationship between the structure of the metal center and its reactivity toward different substrates, with the ultimate goal of providing a robust framework to understand the properties that have the strongest influence on catalytic performance for the conversion of oxygenates.
References
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Patent
Crystalline silicates and method of preparing the same
TL;DR: A crystalline metal organosilicate having the composition, in its anhydrous state, as follows: 0.9 ± 0.2 [xR.sub.2 O + (1-x) M.sub as discussed by the authors, where n is the valence of said metal, R is an alkyl ammonium radical and x is a number greater than 0 but not exceeding 1, is characterized by a specified X-ray diffraction pattern.
Patent
Crystalline zeolite ZSM-20 and method of preparing same
TL;DR: In this article, a new crystalline zeolite, designated ZSM-20, was proposed for catalytic conversion of organic compounds, e.g. hydrocarbons.
Patent
Crystalline silicates and method for preparing same
TL;DR: A crystalline microporous organosilicate having the composition in terms of moles of oxides of: R2 O : 0-1.5 M2 O: < 0.05 Al2 O3 : 40-70 SiO2 : x H2 O wherein R represents a tetraethylammonium cation, M is an alkali metal cation and x has a value of 0 to 15 depending upon the degree of hydration of the composition as mentioned in this paper.
Patent
Crystalline silicates and process of preparation
TL;DR: Novel crystalline silicates which in dehydrated form having the composition in terms of moles of the oxides: (10±03) (R)2/n O [a Fe 2 O3 b Al 2 O 3 c Ga2 O3 y(dSiO2 eGeO2)], wherein R is one or more mono- or bivalent cations and a, b, c, d, e, y and n are as defined hereinafter are disclosed The thermally stable silicates are suitably employed as extracting agents, drying agents, ion
Patent
Synthetic crystalline metal silicate compositions and preparation thereof
TL;DR: In this article, a new crystalline silicate compositions are prepared from a silica containing mixture which is substantially free of aluminum ions and contains a source of choline by digesting a reaction mixture comprising a choline salt, sodium hydroxide, potassium hydroxides, an oxide of silicon, water and, optionally, a Group VIII metal salt with the reaction mixture containing less than about 1000 ppm aluminum.
Related Papers (5)
Epoxidation of Lower Olefins with Hydrogen Peroxide and Titanium Silicalite
M. G. Clerici,P. Ingallina +1 more