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Catalyzer for synthesizing pyridine base

The technology of a catalyst and pyridine base is applied in the field of catalysts for pyridine base synthesis, and can solve the problems of low yield of pyridine base and the like

Inactive Publication Date: 2005-01-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is the problem that the yield of pyridine base is not high in the prior art, and a new catalyst for the synthesis of pyridine base is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Using water glass and aluminum sulfate as silicon source and aluminum source respectively, and tetrapropylammonium bromide as template agent, ZSM-5 raw powder was synthesized by hydrothermal synthesis method. The crystallization is carried out in a stainless steel reactor, the stirring speed is 100-200 rpm, the pressure is the pressure of the reaction system itself, and the crystallization temperature is 100-150°C. 700 grams of synthesized ZSM-5 raw powder was wet-mixed with 300 grams of alumina binder after alkylamine, and then extruded into strips, and then exchanged with ammonium nitrate solution to obtain hydrogen-type molecular sieve H-ZSM-5, whose silicon-aluminum mole than SiO 2 / Al 2 o 3 for 250. This molecular sieve was used as catalyst A.

Embodiment 2

[0035] A certain amount of lead nitrate is dissolved in an appropriate amount of water to obtain a certain concentration of lead-containing solution, then a certain amount of molecular sieve H-ZSM-5 prepared in Example 1 is added to the solution for impregnation, and the obtained product is in Drying at 110°C, followed by calcination at 550°C for 4 hours gave Catalyst B with a lead content of 2.5% by weight in terms of metal.

Embodiment 3

[0037] The preparation method is the same as in Example 2, except that cobalt nitrate is used instead of lead nitrate to obtain catalyst C with a cobalt content of 1.5% (weight) in terms of metal.

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PUM

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Abstract

The invention relates to a catalyst for synthesizing pyridine base for improving the yield of pyridine base. The technology is characterized in that the catalyst with cobalt, lead or metal oxide of their mixture -supported on ZSM-5 zeolite can promoting the reaction of fatty aldehyde, fatty ketone or their mixtures and ammonia.

Description

technical field [0001] The invention relates to a catalyst for synthesizing pyridine bases, in particular to a catalyst for synthesizing pyridine bases by reacting aliphatic aldehydes, aliphatic ketones or their mixtures with ammonia in a gas phase. Background technique [0002] Pyridine and alkylpyridine are commonly referred to as pyridine bases, which are important organic raw materials for the production of high value-added fine chemical products. Extensive, broad prospects for deep processing. In recent years, the application field of pyridine base has been continuously expanded, and the demand has grown rapidly to attract widespread attention. Pyridine bases mainly include pyridine, 2-picoline, 3-picoline, 4-picoline and 2-methyl-5-ethylpyridine, etc. [0003] Pyridine is mainly used in the pharmaceutical industry to make sulfonamides, penicillin, vitamin A, cortisone, anthelmintics and local anesthetics, etc. It can also be used in st...

Claims

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Application Information

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IPC IPC(8): B01J29/46C07D213/06
Inventor 毛东森杨为民卢冠忠
Owner CHINA PETROLEUM & CHEM CORP
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