Method for preparing para-xylene catalyst by amino-modified methanol

A technology of xylene catalyst and amino modification, which is applied in the direction of catalyst activation/preparation, catalyst, carbon compound catalyst, etc. It can solve the problems of uneven bed temperature, poor catalyst stability, easy deactivation, etc., and achieve improved surface properties and Effects of stability, increase in adsorption capacity, and increase in one-way yield
CN107913731AActive Publication Date: 2018-04-17XUZHOU NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XUZHOU NORMAL UNIVERSITY
Publication Date
2018-04-17

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Abstract

The invention discloses a method for preparing a para-xylene catalyst by amino-modified methanol. The method adopts dioxane, mesitylene, glacial acetic acid, COF-1 nano material, FeSO4.7H2O and KBH4 as main raw materials. The method disclosed by the invention has the beneficial effects that unique processes and technical parameters are adopted, loads are generated by thermal expansion, amino modification and nano-iron reaction, and by thermal-expansion treatment, the surface adhesiveness of COF-1 is improved, and basis is provided for the following amino modification; by amino modification, the surface property is improved and the benefit for fully and uniformly loading the nano-iron generated in reaction onto porous carriers is achieved; by alkylation reaction of methanol, para-xylene isobtained, so that the steps of isomerization and the like in the traditional process are omitted, the process route is shortened and the once-through yield of the para-xylene is greatly increased.
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Description

technical field

[0001] The invention relates to an amino-modified methanol-to-p-xylene catalyst and a preparation method thereof, belonging to the technical field of catalysts. Background technique

[0002] P-xylene is an extremely important bulk chemical raw material, mainly used in the production of terephthalic acid and dimethyl terephthalate. Due to the rapid development of my country's polyester industry, the consumption of p-xylene has also increased rapidly. In industry, p-xylene is generally produced by separating aromatics from petroleum cracking products, disproportionating toluene, or transalkylating heavy aromatics. Because these methods produce a large amount of benzene by-product, and the economic value of benzene is low, it affects p-xylene to a certain extent. Economics of the toluene production process. The traditional method mostly adopts fixed bed technology, the bed temperature is not uniform, the catalyst is poor in stability, easy to deactivate and di...

Claims

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