Highly dispersible cerium-oxide modified Ni/SBA-15 for steam reforming of bio-mass based JP10

doi:10.1016/j.cjche.2022.01.016

Abstract

Abstract: Ni/SBA-15 modified by highly dispersed cerium-oxide was prepared with the aid of sucrose for steam reforming of JP10 (C₁₀H₁₆). Their characterization showed that addition of appropriate amount ceria led to the formation of highly dispersed CeO₂ and Ni, and the CeO₂ covered smaller nickel particles like strawberry seeds to form much more interface between them. Their catalytic activity exhibited higher stability over time on stream of 6.5 h with conversion higher than 95% and higher carbon resistance (mass loss less than 4.5% by TG), which may derive from good properties below: (1) much more interface enhanced cooperation effect and increased turnover frequency at the interface; (2) the stronger interaction between Ni and ceria to suppress sintering by formation of Ni-O-Ce solid solution; (3) the large amount of oxygen vacancies from the formation of Ni-O-Ce solid solution and highly dispersed CeO₂ to facilitate the water–gas–shift reaction and carbon removal.

Key words: JP-10, Steam reforming, Ceria, Nickel, Ni-CeO₂ cooperation

摘要： Ni/SBA-15 modified by highly dispersed cerium-oxide was prepared with the aid of sucrose for steam reforming of JP10 (C₁₀H₁₆). Their characterization showed that addition of appropriate amount ceria led to the formation of highly dispersed CeO₂ and Ni, and the CeO₂ covered smaller nickel particles like strawberry seeds to form much more interface between them. Their catalytic activity exhibited higher stability over time on stream of 6.5 h with conversion higher than 95% and higher carbon resistance (mass loss less than 4.5% by TG), which may derive from good properties below: (1) much more interface enhanced cooperation effect and increased turnover frequency at the interface; (2) the stronger interaction between Ni and ceria to suppress sintering by formation of Ni-O-Ce solid solution; (3) the large amount of oxygen vacancies from the formation of Ni-O-Ce solid solution and highly dispersed CeO₂ to facilitate the water–gas–shift reaction and carbon removal.

关键词: JP-10, Steam reforming, Ceria, Nickel, Ni-CeO₂ cooperation

Haocui Zhang, Zhourong Xiao, Mei Yang, Jijun Zou, Guozhu Liu, Xiangwen Zhang. Highly dispersible cerium-oxide modified Ni/SBA-15 for steam reforming of bio-mass based JP10[J]. Chinese Journal of Chemical Engineering, 2022, 43(3): 255-265.

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