Method of preparing 2-cyanopyrazine by ammonia oxidation method and its special catalyst

Abstract

A process for preparing 2-cyanopyrazine by ammonia oxidizing method features use of a special catalyst VaTibPcDdEeOx, where V and Ti are primary catalyst and P, Fe, Ni, Co, Bi, Mn, Cr, Mo, Cu, Zn, Sn, B, K, Li and Mg are multicomponent catalyst. Its advantages are high activity, selectivity, output rate and purity and simple process.

Description

1. Technical field

[0001] The invention relates to a method for preparing 2-cyanopyrazine by an ammoxidation method and a special catalyst, which belongs to the technical field of organic chemistry and also belongs to the technical field of organic fine chemicals. 2. Background technology

[0002] 2-cyanopyrazine, formula C 5 h 3 N 3 , white or light yellow liquid at room temperature. Used in medicine, spices and other industries.

[0003] Since 2-methylpyrazine is prepared by ammoxidation under the action of a catalyst, it is the best method for preparing cyano compounds at present, and the key is to find a catalyst with high activity and high selectivity. Ammoxidation refers to a catalytic reaction in which active methyl groups in organic molecules react with cheap ammonia and oxygen (air) under the action of a catalyst to convert them into cyano groups in one step. Prepared by ammonia oxidation method, 2-cyanopyrazine has the advantages of simple process, continuous ...