Integrated member type methyl aromatic hydrocarbon selective oxidizing catalyst and its preparation and use

Abstract

The integrated member type catalyst for selective oxidation of methyl aromatic hydrocarbon includes carrier, adhesive and active component. The active component is attached via the adhesive onto the carrier, and the carrier is porous honeycomb ceramic material, metal screen or corrugated metal sheet. The active component has the general expression of V1PaXbAlcMdCreOn. The catalyst is superior to available one, which has environmental pollution caused by liquid phase oxidation, complete oxidation and catalyst deactivation of 'hot point' in the catalyst bed, and has high selectivity and excellent industrial application foreground.

Description

(1) Technical field

[0001] The invention relates to an integral component type methyl aromatic hydrocarbon selective oxidation catalyst and its preparation and application, in particular to a catalyst for the oxidation and ammoxidation of toluene and picoline side chain methyl groups. (2) Background technology

[0002] The selective oxidation of the side chains of methyl aromatic hydrocarbons is a very important step in the synthesis of fine chemical intermediates. The synthesized aromatic aldehydes, acids, nitriles, etc. can be used in textiles, pesticides, medicine, rubber, food and other fields. The industrially synthesized technical routes are mainly liquid-phase oxidation [Bo.HemantV, et al.Ind Eng Chem Prod Res Dev, 1984, 23(3): 455-458] and electrochemical oxidation [Zhu Xian et al., Journal of Shanghai University ( Natural Science Edition), 2001, 7(1): 73-76]. Although these synthetic routes are mature in technology, they will cause serious environmental problems, ...