Application of nanorod-shaped CeO2 nanocrystalline catalyst in gas-solid phase crotonaldehyde selective hydrogenation catalytic reaction

Abstract

The invention relates to the technical field of application of chemical catalysts, in particular to a novel application of nanorod-shaped CeO2 nanocrystals. The invention provides an application of ananorod-shaped CeO2 nanocrystalline catalyst in a selective hydrogenation catalytic reaction of gas-solid phase crotonaldehyde. The nanorod-shaped CeO2 nanocrystal mainly exposes {110} + {100} crystalfaces, the catalytic performance of the catalyst is superior to that of nano cubic CeO2 nanocrystals with exposed {100} crystal faces and nano polyhedral CeO2 nanocrystals with exposed {111} crystalfaces, and compared with an existing noble metal-based catalyst, the catalyst has good catalytic selectivity, meanwhile, the preparation process is simple, and the catalyst cost is lower.

Description

technical field [0001] The present invention relates to a new application method of chemical catalysts, especially nanorod CeO 2 New applications of nanocrystalline catalysts in gas-solid selective hydrogenation of crotonaldehyde. Background technique [0002] α, β-unsaturated alcohols are widely used in fine chemicals such as coatings, medicines and plastics, and the synthesis of unsaturated alcohols from α, β-unsaturated aldehydes through selective hydrogenation is the most atomically economical reaction. However, the conjugated C=C bond in the reactant molecule is easier to hydrogenate than the C=O bond, so improving the catalytic performance of the reaction, especially the selectivity of unsaturated alcohols, is a challenging topic. At present, aluminum isopropoxide and NaBH are mostly used in industry 4 and LiAlH 4 Such direct reduction of unsaturated aldehydes can obtain unsaturated alcohols with higher yields, but this method is more serious to environmental pollut...

AI Technical Summary

Problems solved by technology

Although the metal itself has good hydrogenation performance, the catalytic selectivity of the reaction has been generally low, and there are also serious catalytic stability problems.

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