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ZSM-5 zeolite materials doped with fluorine species for the synthesis of MTBE and other acido-catalyzed reactions
ZSM-5 zeolite materials doped with fluorine species for the synthesis of MTBE and other acido-catalyzed reactions
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机译:掺氟的ZSM-5沸石材料用于MTBE的合成和其他酸催化反应
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摘要
Provided herein is are acidic Z5M-5 zeollte materials which are highly active and selective in the synthesis of methyl tert-butyl ether (MTBE) and similar ethers. The materials are obtained by the preparation method comprising the main steps of: i) impregnation of zeolites with fluorine species using ammonium fluoride as precursor, preferably with a F loading of ca.1.9×103 mol.g−1 of zeolite; and ii) stepwise activation in air at preferably 250° C. and then preferably at 300° C. to 500° C., preferably 450° C. The method is preferably applied to desilicated ZSM-5 zeolite and provides conversion rates to MTBE superior to those obtained with prior art commercial AMBERLYSF™ resin (gas phase reaction at 70-80° C.) is obtained. No by-products, commonly produced by prior art commercial organic resin catalyst, are detected in the product spectrum.
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