Hydrocarbon oxidation catalyst and method for preparing same

Abstract

The invention discloses a hydrocarbon oxidation catalyst and a method for preparing the same, and particularly relates to catalysts for preparing maleic anhydride from benzene by means of gas-solid phase catalytic oxidation reaction. The benzene is used as a raw material for the maleic anhydride. The method includes preparing solution or suspension from salt or oxide with V, Mo, Ti, P, Na and Ni;carrying out drying, activation, homogenization and emulsification and spraying to prepare the hydrocarbon oxidation catalyst. The salt or the oxide is used as a precursor. The hydrocarbon oxidation catalyst and the method have the advantage that the problems of long induction periods of existing catalysts, vulnerability to falling of active matters, low utilization rates of raw materials for thecatalysts, poor work environments for workers and severe environmental pollution can be solved by the aid of the hydrocarbon oxidation catalyst and the method.

Description

technical field [0001] The invention belongs to the preparation and application of hydrocarbon oxidation catalysts, in particular to a catalyst for preparing maleic anhydride by oxidizing benzene. Background technique [0002] Maleic anhydride is an important organic chemical raw material and the third largest anhydride in consumption after acetic anhydride and phthalic anhydride. It is mainly used in diene synthesis, pharmaceuticals, pesticides, dye intermediates and the preparation of polyester resins, alkyd resins, horse To acid, etc., has a wide range of applications and a huge market demand. [0003] At present, domestic maleic anhydride manufacturers mainly use benzene as raw material to produce maleic anhydride, and maleic anhydride catalyst manufacturers use high-temperature spraying method to prepare catalysts. For example, Yao Shaohua and others invented the patent "catalyst for producing maleic anhydride by gas-phase oxidation of benzene with high load and high y...

AI Technical Summary

Problems solved by technology

Liu Xianguo invented the patent "a catalyst for the production of maleic anhydride by benzene oxidation" (public announcement number: CN103816931A). The spraying temperature of the catalyst is 210°C, and the raw material utilization rate of the catalyst is about 66%. It can be seen from the above industrial catalyst patents The loss of catalyst raw materials prepared by high-temperature spraying method is serious, which increases environmental pollution, and the active components of the catalyst are easy to fall off, the induction period of catalytic economy is long, and the working environment of workers is relatively harsh