Citation: HongXia Cao, Jun Zhang, ChengLong Guo, Jingguang G. Chen, XiangKun Ren. Highly dispersed Ni nanoparticles on 3D-mesoporous KIT-6 for CO methanation:Effect of promoter species on catalytic performance[J]. Chinese Journal of Catalysis, ;2017, 38(7): 1127-1137. doi: 10.1016/S1872-2067(17)62862-6 shu

Highly dispersed Ni nanoparticles on 3D-mesoporous KIT-6 for CO methanation:Effect of promoter species on catalytic performance

a Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China;
b Earth and Environmental Engineering Department, Columbia University, New York 10027, United States;
c School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
d Department of Chemical Engineering, Columbia University, New York 10027, United States

Received Date: 9 April 2017
Revised Date: 23 May 2017

Fund Project: This work was supported by the Fundamental Research Funds for the Central Universities (2015XKMS061).

Promoter-modified Ni-based catalysts were synthesized by an incipient-wetness impregnation method using 3D-mesoporous KIT-6 as a support modified by ethylene glycol, and evaluated for the catalytic production of synthetic natural gas (SNG) from CO methanation. Characterization results suggested that the addition of promoter species could remarkably improve the low-temperature catalytic activity for CO methanation, which was due to a large dispersion of Ni nanoparticles, an enhanced interaction between metal and support as well as a confinement effect of 3D-mesopores. Among all catalysts, Ni-V/KIT-6 possessed the best catalytic performance, which was ascribed to the largest H₂ uptake of 177.6 μmol/g and Ni dispersion of 26.5%, an intimate interaction with the support from the formation of Si-O-V linkage and an enhanced confinement effect of 3D-mesopores to effectively prevent the growth of Ni nanoparticles and carbon filaments. In consequence, Ni-V/KIT-6 displayed excellent catalytic performance as well as high catalytic stability, which can be regarded as a promising candidate for CO methanation.
- Nickel-based catalyst,
- Methanation,
- Promoter,
- Support,
- 3D-mesopore
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