F+:Highly flammable;157621-61-9Relevant articles and documents
CONVERSION OF CH3OH INTO OLEFINS OVER Al2O3-Cr2O3 TREATED WITH CF3Cl.
Kurosaki,Okazaki
, p. 1279 - 1283 (1983)
A mixed oxide of Al and Cr having an atomic ratio(Al/Cr) of around 9 showed catalytic activity for the conversion of CH//3OH into olefins and aromatic compounds after treatment with CF//3Cl at 450 C. The mixed oxide treated with CF//3Cl adsorbed a considerable amount of NH//3, even at temperatures as high as 500 C. Analyses of the compositions on the surface layer by XPS showed that the F component was predominantly bound to Al, not to Cr. Strong acid sites related to the less crystallized AlF//3 seemed to be able to promote the conversion of CH//3OH.
Synthesis of SZR framework type molecular sieves
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Page/Page column 6-7, (2021/11/13)
A method is provided for synthesizing molecular sieves of SZR framework type using 1,2,3-trimethylimidazolium cations as a structure directing agent and alumina-coated silica as a combined source of silicon and aluminum.
METHOD FOR DIRECTLY PREPARING DIMETHYL ETHER BY SYNTHESIS GAS
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Paragraph 0040; 0041; 0044, (2021/08/13)
Provided is a method for directly preparing dimethyl ether by synthesis gas, the method comprises: the synthesis gas is passed through a reaction zone carrying a catalyst, and reacted under the reaction conditions sufficient to convert at least a portion of the raw materials to obtain the reaction effluent comprising dimethyl ether; and the dimethyl ether is separated from the reaction effluent, wherein the catalyst is zinc aluminum spinel oxide. In the present invention, only one zinc aluminum spinel oxide catalyst is used, which can make the synthesis gas to highly selectively form dimethyl ether, the catalyst has good stability and can be regenerated. The method of the present invention realizes the production of dimethyl ether in one step by the synthesis gas, and reduces the large energy consumption problem caused by step-by-step production.
