Boosted methane dry reforming for hydrogen generation on cobalt catalyst with small cerium dosage. (30th December 2022)

• Record Type: Journal Article
• Authors: Cao, Anh Ngoc T.; Pham, Cham Q.; Pham, Le Kim Hoang; Le Tri Nguyen, Dang; Phuong, Pham T.T.; Tran, Thi Tuong Vi; Nguyen, Van-Phuoc; Nguyen, Thanh Binh; Van Le, Quyet; Nguyen, Ngoc Anh; Nguyen, Tung M.
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 100(2022)
• Page Start: 42200
• Page End: 42212
• Publication Date: 2022-12-30
• Subjects: Mesoporous alumina -- Cobalt catalyst -- Hydrogen -- Syngas -- Methane dry reforming; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.11.077
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: 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. Graphical abstract: Image 1 Highlights: Cobalt-based alumina catalysts containing ceria as the promoter were synthesized. The addition of cerium boosts both methane and carbon dioxide conversions. The presence of ceria promoter suppresses carbon deposit. Optimized dosage of Ce has been found in the range from 0.3 to 0.5 wt%.