Molecular sieve catalyst improvement process

Abstract

The present invention discloses a molecular sieve catalyst improvement process, which comprises: A, raw material optimization: selecting a Y-type zeolite as a molecular sieve catalyst raw material, especially a high-silicon Y-type zeolite, and a Y-type molecular sieve unit cell in the Y-type zeolite contains three types of cages, which are respectively a double six-ring cage, a sodalite cage and a supercage; and B, modification treatment: using a glass rod to pre-mix and stir the Y-type zeolite raw material and a complexing agent compound solution by a user, and conducting stirring to a uniform state, so as to obtain the modified Y-type zeolite raw material. According to the preparation method disclosed by the invention, through the flow matching of raw material optimization, modification treatment, Fenton reagent dipping, high-pressure crystallization treatment, product washing and drying and roasting treatment, optimization selection is carried out on the characteristics of the material, the quality of the prepared material of the Y-type molecular sieve catalyst is improved, and the raw material of the Y-type molecular sieve catalyst is subjected to activating chemical combination improved reaction treatment; and the acidity and stability of the Y molecular sieve are kept while the mesoporous structure is ensured.

Description

technical field [0001] The invention relates to the technical field of molecular sieve catalysts, in particular to an improvement process of molecular sieve catalysts. Background technique [0002] Molecular sieve catalysts, also known as zeolite catalysts, refer to catalysts that use molecular sieves as catalyst active components or one of the main active components. Molecular sieves have ion exchange properties, uniform molecular size pores, acid catalytic activity, and good thermal stability and Hydrothermal stability, can be made into a catalyst with high activity and high selectivity for many reactions, the most widely used molecular sieves are X-type, Y-type, mordenite, ZSM-5 and other types, and the most used in industry is molecular sieve cracking catalyst. [0003] In the process of wastewater treatment, many kinds of catalysts need to be used, and molecular sieve catalysts are one of them that are often used. According to the different types of molecular sieve cat...

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Problems solved by technology

[0005] The purpose of the present invention is to provide molecular sieve catalyst improvement technology, to solve the problem that the Y-type molecular sieve catalyst prepared by using the traditional process proposed in the above-mentioned background technology has poor catalytic activity and stability during use, and it is difficult to ensure the mesoporous structure. , to maintain the acidity and stability of Y molecular sieve, and it is easy to cause clogging of the pores in the Y-type molecular sieve catalyst

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