CATEGORY: UNSUPPORTED CATALYSTS
Fuel, Volume 107, May 2013, Pages 873–878
A
novel porous ammonium nickel molybdate as the catalyst precursor towards deep
hydrodesulfurization of gas oil
Changlong Yin, Leiyan Zhao, Zhenjiang Bai, Huan Liu, Yunqi Liu,
Chenguang Liu
Key Laboratory of Catalysis, CNPC, State Key Laboratory of Heavy Oil
Processing, China University of Petroleum, Qingdao, Shandong 266555, China
Abstract
Researchers prepared porous
ammonium nickel molybdate, a potential precursor for deep hydrodesulfurization
catalyst with the formula of (NH4)HNi2(OH)2(MoO4)2,
using a high-temperature hydrothermal synthesis method. The unsupported NiMoS
catalysts with differing Ni/Mo ratios were prepared from the precursors.
The precursors and
catalysts were characterized by nitrogen physisorption, powder XRD, TG–DSC–MS, HRTEM, SEM and
evaluated in the continuous HDS of FCC gas oil. Results suggest that the
activities of the catalysts were much higher than that of commercial NiMo/Al2O3.
The catalysts derived from the crystalline ammonium nickel molybdate showed
much higher catalytic activity than that obtained from amorphous precursor. Consequently, they could be attractive
material system for future applications.
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