Synthesis of Trinuclear Quaternary Ammonium Salt Template and Preparation and Application of Molecular Sieve Solid Acid

Abstract

The invention relates to a synthesis method of a novel trinuclear aromatic ring quaternary ammonium salt template agent SDAIII, a preparation method of a novel HZSM-5 molecular sieve, and an application of the molecular sieve to study of the catalytic performance in the condensation reaction between ethylene glycol and cyclohexanone after the molecular sieve is modified by chlorosulfonic acid. The novel molecular sieve has the main characteristics of high catalytic activity, good stability, large number of reuse, convenience in catalyst separation, simplicity in after-treatment and little pollution, is efficient environment-friendly solid acid, and is expected to be developed into a green catalyst commonly used in laboratories and industrial production.

Description

technical field [0001] The invention relates to the preparation of a novel green environmental protection catalyst HZSM-5 molecular sieve solid acid and the research on its catalytic performance in the condensation reaction of ethylene glycol and cyclohexanone after being modified by chlorosulfonic acid. Background technique [0002] ZSM-5 series high silicon aluminum ratio zeolite molecular sieve has special pore structure and catalytic performance, excellent thermal stability and acid resistance, excellent hydrophobicity and water vapor stability, so it is highly valued by the petrochemical industry at home and abroad. ZSM-5 molecular sieve can be used in very important chemical processes such as alkane aromatization, aromatic hydrocarbon alkylation, and toluene disproportionation. It works well in the ortho or para methylation of toluene. In order to expand the scope of application of this type of catalyst, we have also applied this catalyst in the acetal (ketone) synthe...

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Problems solved by technology

In order to expand the scope of application of this type of catalyst, we have also applied this catalyst in the acetal (ketone) synthesis reaction to overcome the use of inorganic acid catalysts (such as H in the traditional acetal (ketone) synthesis reaction. 2 SO 4 , HCl, H 3 PO 4 etc.) have the disadvantages of many side reactions, strong corrosion, complex post-reaction treatment, and environmental pollution.

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