Journal
JOURNAL OF CO2 UTILIZATION
Volume 18, Issue -, Pages 345-352Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2016.12.014
Keywords
Dry reforming of methane; Nickel-cobalt alloy; Phyllosilicates; Carbon-resistance
Funding
- National University of Singapore under FRC Project [WBS R-279-000-407-112, ETRP 1501 103, WBS R-279-000-491-279]
- Research Excellence and Technological Enterprise (CREATE) program under NRF Project [WBS R-706-001-101-281]
- China Scholarship Council (CSC)
Ask authors/readers for more resources
This paper describes synthesis and characterization of Ni and Ni-Co alloy supported over SiO2 derived from phyllosilicates. A series of 10 wt% Ni- Co phyllosilicate supported over SiO2 with different Ni/Co ratio is successfully prepared by hydrothermal method where urea is used to release ammonia gradually providing a basic environment. TPR results show that adding of Co enhances the metal-support interaction. After H-2 reduction at high temperature, small and uniform Ni- Co alloy particles are well supported over silica. These catalysts are tested for dry reforming of methane (DRM) at 750 degrees C. The catalytic performance is highly affected by Ni/Co ratio: 10Ni and 7Ni3Co show high and stable activity for 100 h, whereas 5Ni5Co, 3Ni7Co and 10Co exhibit severe deactivation due to oxidation of metal sites. A harsher test has shown that adding of Co with a proper amount indeed can help to suppress metal sintering and carbon formation. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available