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Boosted methane dry reforming for hydrogen generation on cobalt catalyst with small cerium dosage


Anh Ngoc T. Cao, Cham Q. Pham, Le Kim Hoang Pham, Dang Le Tri Nguyen, Pham T. T. Phuong, Thi Tuong Vi Tran, Van-Phuoc Nguyen, Thanh Binh Nguyen, Quyet Van Le, Ngoc Anh Nguyen, Tung M. Nguyen

Source title: 
International Journal of Hydrogen Energy, 2021 (ISI)
Academic year of acceptance: 

Metal-support interface influences the catalytic activity and physical properties of heterocatalysts dramatically. Herein, the effect of cerium on material properties and catalytic activity of cobalt over gamma-alumina applied in dry reforming of methane (DRM) was investigated. The dispersion of cobalt over gamma-alumina was noticeably improved with low cerium dosages ranging from 0.1 to 0.5 wt%. In addition, the presence of Ce promoter on catalyst surface led to an enhancement in reducibility of cobalt oxide to cobalt metal in the catalyst activation. Using CO2-temperature programmed desorption technique, the catalyst basicity was found to increase proportionally with cerium loading. At an optimal dosage of 0.3–0.5 wt%, the cerium promoted cobalt supported on gamma catalyst displayed outstanding performance in DRM with noticeable conversion improvements up to 11% in both methane and carbon dioxide.