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- Title
The Effect of Preparation Method of Ni-Supported SiO 2 Catalysts for Carbon Dioxide Reforming of Methane.
- Authors
Ren, Hua-Ping; Ding, Si-Yi; Ma, Qiang; Song, Wen-Qi; Zhao, Yu-Zhen; Liu, Jiao; He, Ye-Ming; Tian, Shao-Peng
- Abstract
Reforming methane to produce syngas is a subject that generates considerable interest. The process requires catalysts that possess high-performance active sites to activate stable C–H bonds. Herein, we report a facile synthetic strategy to prepare Ni-based catalysts by complexation–impregnation (Ni-G/SiO2-C) and precipitation–impregnation (Ni-G/SiO2-P) methods using glycine as a complexing agent. The particle size of Ni in both types of catalysts is decreased by adding glycine in the preparation process. Nevertheless, the preparation methods and amount of glycine play a significant role in the particle size and distribution of Ni over the Ni-based catalysts. The smaller particle size and narrower distribution of Ni were obtained in the Ni-G/SiO2-P catalyst. The catalysts were comparatively tested for carbon-dioxide reforming of methane (CDR). Ni-G/SiO2-P showed better CDR performance than Ni-G/SiO2-C and Ni/SiO2 and increased stability because of the smaller particle size and narrower distribution of Ni. Moreover, a high-performance Ni-based catalyst was prepared by optimizing the amount of glycine added. An unobservable deactivation was obtained over Ni-G-2/SiO2-P and Ni-G-3/SiO2-P for CDR during TOS = 20 h. Thus, a new promising method is described for the preparation of Ni-based catalysts for CDR.
- Subjects
CARBON dioxide; METHANATION; PARTICLE size distribution; GLYCINE agents; CATALYSTS; NICKEL catalysts; FISCHER-Tropsch process; METHANE
- Publication
Catalysts (2073-4344), 2021, Vol 11, Issue 10, p1221
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal11101221