Inorganic Chemicals Industry >
Study on preparation and performance of Ni/Al2O3 hydrogenation catalyst
Received date: 2022-02-25
Online published: 2022-07-14
Noble metals and copper-based catalysts had been often used for the hydrogenation of hydroxypivaldehyde（HPA）.In order to better reduce the production cost and operation cost of catalysts，Ni/Al2O3 prepared by co-precipitation method and impregnation method were compared respectively，and the catalytic performance of a series of catalysts for the hydrogenation of HPA as raw materials to neopentyl glycol（NPG） was investigated in a fixed bed reactor.X-ray diffraction（XRD），N2 physical adsorption（BET） and CO pulse adsorption were used for characterization.The results showed that 20%Ni/Al2O3 catalyst prepared by impregnation method had a good catalytic performance，which had a large specific surface area，good metal dispersion and the nickel species in the catalyst could be easily reduced，which had good reaction performance.Under relatively mild reaction conditions that reaction temperature of 103 ℃，reaction pressure of 3 MPa，liquid hourly space velocity of 1 h-1 and the ratio of hydrogen to aldehyde of 10，the conversion of HPA was 100% and the selectivity of NPG was 99.3%.In the long-term evaluation process of 1 000 h，the catalyst maintained good activity and had better industrial prospect.
Key words： hydroxypivaldehyde; hydrogenation; nickel catalyst; neopentyl glycol
Wenlong YANG , Peng CHENG , Yanfei LU , Zhiyu NAN , Yuhang LI , Shisong LI , Chunlei WANG , Chang SHU , Dongsheng ZHANG . Study on preparation and performance of Ni/Al2O3 hydrogenation catalyst[J]. Inorganic Chemicals Industry, 2022 , 54(7) : 141 -148 . DOI: 10.19964/j.issn.1006-4990.2022-0080
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