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Trends and advances in the development of coal fly ash-based materials for application in hydrogen-rich gas production:A review

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Journal of Energy Chemistry 2022年第10期31卷 485-512,I0013页

作者： Kang Gao Maria C.Iliuta Department of Chemical Engineering Laval UniversityQuébecQC G1V 0A6Canada

Coal fly ash(FA),a valuable industrial solid residue generated from coal combustion,is composed of various metal oxides and has a high thermal *** that the coal-based energy will continue to account for a significant portion of global electricity generation in the coming years,the lack of effective management strategies exacerbates the threat of FA wastes to the surrounding environment and human *** a sustainable development,green and renewable hydrogen economy and CO_(2)capture efforts provide appealing opportunities to valorize FA as catalysts and/or sorbents due to their appealing physicochemical *** applications along with carbon neutrality are potential strategies to mitigate climate change crisis,but high processing costs(catalysts/sorbents)are challenging to realize this *** this context,the utilization of FA not only enhances industrial competitiveness(by reducing manufacturing costs),but also provides ecologically friendly approaches to minimizing this solid *** state-of-the-art review highlights a wide-ranging outlook on the valorization of FA as catalysts and sorbents for hydrogen-rich gas production via conventional/intensified processes(CO_(2)/H_(2)O reforming,ammonia decomposition,hydride hydrolysis).The fundamental physicochemical characterizations and hazards/utilization of FA,which significantly affect the FA's utilization in various fields,are first *** influence of several factors(like FA types and catalysis/sorption operation conditions)on the activity performance of FA-based materials is then discussed in *** critical review aims to open the window to further innovative ideas regarding the application of different FA residues in other catalytic and sorption processes.

关键词： Coal fly ash catalyst/support High temperature CO_(2)sorbent Bifunctional material Hydrogen production Conventional/intensified process

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