Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (7): 141-148.doi: 10.19964/j.issn.1006-4990.2022-0080

• Catalytic Materials • Previous Articles     Next Articles

Study on preparation and performance of Ni/Al2O3 hydrogenation catalyst

YANG Wenlong1(),CHENG Peng1,LU Yanfei2,NAN Zhiyu3,LI Yuhang3,LI Shisong2,WANG Chunlei2,SHU Chang2(),ZHANG Dongsheng1()   

  1. 1.School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
    2.CenerTech Tianjin Chemical Research and Design Institute Co. , Ltd.
    3.China University of Petroleum
  • Received:2022-02-25 Online:2022-07-10 Published:2022-07-14
  • Contact: SHU Chang,ZHANG Dongsheng E-mail:hebutyangwl@163.com;potatopumier@163.com;zds1301@hebut.edu.cn

Abstract:

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

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