Supported Ni-W Bimetallic Catalysts for Hydrogenation of Poly-Alpha-Olefins Synthetic Base Oil.

Zheng, Lishan; Wang, Sitan; Lou, Shifeng; Liu, Kande; Meng, Xuan; Liu, Naiwang; Shi, Li

A series of Ni-W bimetallic catalysts were prepared by Ni2O3 and WO3 on porous materials and used in a fixed bed reactor for the hydrogenation of poly alpha-olefin base oil synthesis. The catalysts were characterized by N2 adsorption–desorption, XRD, H2-TPR, H2-TPD, XPS, TEM and ICP-OES to investigate the catalytic activity and explore the possible deactivation mechanism. Under the optimal reaction conditions of 250℃, 4 MPa, LHSV = 3 h−1 and H2: PAO = 200, the Ni5W1/Clay catalyst with 5% nickel and 1% tungsten loading can make the hydrogenation conversion rate as high as 100%, and the catalyst deactivation is not obvious within 8 h. The addition of W led to the reduction of the metal particle size as well as the formation of more dispersed active sites, thus improve its catalytic activity.

CATALYST poisoning; FIXED bed reactors; CATALYTIC activity; BASE oils; SIZE reduction of materials; BIMETALLIC catalysts

Catalysis Letters, 2024, Vol 154, Issue 10, p5732

1011-372X

Academic Journal

10.1007/s10562-024-04755-2