Catalyst for oxidizing-synthesizing glutaric dialdehyde with cyclopentene and preparation method thereof

Abstract

The invention discloses a catalyst for oxidizing-synthesizing glutaric dialdehyde with cyclopentene and a preparation method thereof. The catalyst adopts a Ti-MSU type mesoporous molecular sieve as a carrier and is a supported catalyst supporting tungstic oxide on surface; the carrier Ti-MSU type mesoporous molecular sieve has a three-dimensional vertical-crossing arrangement vermiform pore canal structure, bigger aperture and higher specific surface; and the mol ratio of silicon to titanium is 1:0.01 to 1:0.04; and the content of tungstic oxide adopted as the active component accounts for 1 to 15 percent of the mass of the catalyst. The catalyst has the characteristics of high activation, better selectivity, mild reaction condition for catalyst preparation and glutaric dialdehyde synthesis with the catalyst, low cost, long service life, better industrial application prospect and environment-friendly property in the whole process from catalyst preparation to glutaric dialdehyde synthesis.

Description

technical field [0001] The patent of the present invention belongs to the technical field of chemical industry, and specifically relates to a catalyst for oxidizing cyclopentene to synthesize glutaraldehyde and a preparation method thereof. Background technique [0002] Glutaraldehyde is the most important saturated aliphatic dialdehyde next to glyoxal, and it is an excellent tanning agent, tissue curing agent, protein crosslinking agent and high-efficiency bactericidal disinfectant. Widely used in biomedical engineering, cellular immunology, biochemistry, leather chemistry, histochemistry, food, microbiology industry, environmental protection and other fields, it is a fine chemical with important uses. At present, the annual demand for glutaraldehyde in the domestic market is about 20,000 tons. Only a few enterprises in Wuhan and Shandong have small-scale production, and the total production capacity is less than 1,000 tons. Domestic glutaraldehyde is mainly imported. [0...

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Problems solved by technology

However, among the above-mentioned molecular sieve catalysts, MCM-4 and HMS type mesoporous molecular sieves need to be synthesized by templates containing nitrogen, bromine or chlorine. When the molecular sieve precursor is roasted at high temperature, the templates decompose and release NO. 2 , HBr or HCl and other toxic gases, easy to cause air pollution

Although the copolymer template used in the synthesis of SBA-15 mesoporous molecular sieve does not contain nitrogen, bromine or chlorine atoms, and does not produce polluting gases during the roasting process, the copolymer template is expensive and has few sources, resulting in higher catalyst costs.

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