Method for preparing loaded solid super acidic catalyst directly by microwave method

Abstract

The invention relates to a method for preparing a loaded solid super acidic catalyst directly by a microwave method, and belongs to a method for preparing a super acidic catalyst. The method comprises the following steps of: (1) mixing and stirring NaHCO3 and a carbon nano tube in a weight ratio of 1:500 fully, and roasting in a microwave reactor to obtain a Na-loaded catalyst carrier; (2) heating the Na-loaded catalyst carrier by microwave radiation, adding a mixed solution of antimony pentachloride (SbCl5) and trimethylsilyl trifluoromethanesulfonate (F3CSO3Si(CH3)3) dropwise, stirring and immersing to obtain a suspension mixed solution; (3) filtering the suspension mixed solution to obtain a solid precursor and a mixed solution; (4) putting the solid precursor into the microwave reactor, heating by the microwave radiation, and roasting to obtain a solid super acidic catalyst prototype; and (5) performing operation for 1 to 5 times by taking the solid super acidic catalyst prototype as a raw material according to the steps (2), (3) and (4) to obtain the solid-loaded super acidic catalyst. The method has the advantages that: the loaded solid super acidic catalyst prepared by the microwave method is high in catalytic hydrocracking activity and selectivity.

Description

Technical field [0001] The present invention involves a method of preparation of a super -strong acid catalyst, especially a method of directly preparing a load solid super -strong acid catalyst. Background technique [0002] The acid catalytic reaction involves the process of refining the hydrocarbon cracking, rectification, heterogeneous and other oil refining processes, and also involves many units of petrochemical and fine chemicals such as olefin hydride, olefin polymerization, aromatic hydrocarbon alkyl, aromatics, alcoholized, etc.The response process can be said to be the basis of a series of important industries. [0003] At present, the solid super -strong acid catalysts mainly include the following categories, which are the unit reactions of heterogeneous reactions, alkylated reactions, esterization reactions, aluminization reactions, hypollar reactions, replacement reactions, aldehydes, and ketones.Directly prepare super -strong acid catalysts. [0004] (1) SBF 5 , TA...

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Problems solved by technology

[0013] The purpose of the present invention is to provide a method for directly preparing a loaded solid superacid catalyst by a microwave method, which solves the problem of complex preparation of the current superacid catalyst, long time, easy loss of active components of the catalyst, poor thermal stability, and especially no significant aromatic Catalytic hydrogenation of ring bridge bond, the problem of low catalytic efficiency