Iron-promoted zirconia-alumina supported Ni catalyst for highly efficient and cost-effective hydrogen production via dry reforming of methane  

作　　者：Ahmed S.Al-Fatesh Naitik Patel Vijay Kumar Srivastava Ahmed I.Osman David W.Rooney Anis H.Fakeeha Ahmed E.Abasaeed Mohammed F.Alotibi Rawesh Kumar 

机构地区：[1]Chemical Engineering Department,College of Engineering,King Saud University,P.O.Box 800,Riyadh 11421,Saudi Arabia [2]Department of Chemistry,Indus University,Ahmedabad,Gujarat 382115,India [3]School of Chemistry and Chemical Engineering,Queen’s University Belfast,Belfast BT95AG,Northern Ireland,UK [4]Institute of Refining and Petrochemicals Technologies,King Abdulaziz City for Science and Technology(KACST),P.O.Box 6086,Riyadh 11442,Kingdom of Saudi Arabia

出　　处：《Journal of Environmental Sciences》2025年第2期274-282,共9页环境科学学报(英文版)

基　　金：The authors would like to extend their sincere appreciation to Researchers Supporting Project number (RSP2023R368);King Saud University,Riyadh,Saudi Arabia.RK,NP,VKS acknowledge Indus University,Ahmedabad,for supporting research.Dr.Ahmed I.Osman and Prof.David W.Rooney wish to acknowledge the support of The Bryden Centre project (Project ID VA5048)。

摘　　要：Developing cost-effective and high-performance catalyst systems for dry reforming of methane(DRM)is crucial for producing hydrogen(H_(2))sustainably.Herein,we investigate using iron(Fe)as a promoter and major alumina support in Ni-based catalysts to improve their DRM performance.The addition of iron as a promotor was found to add reducible iron species along with reducible NiO species,enhance the basicity and induce the deposition of oxidizable carbon.By incorporating 1 wt.%Fe into a 5Ni/10ZrAl catalyst,a higher CO_(2) interaction and formation of reducible"NiO-species having strong interaction with support"was observed,which led to an∼80%H_(2) yield in 420 min of Time on Stream(TOS).Further increasing the Fe content to 2 wt.%led to the formation of additional reducible iron oxide species and a noticeable rise in H_(2) yield up to 84%.Despite the severe weight loss on Fe-promoted catalysts,high H_(2) yield was maintained due to the proper balance between the rate of CH_(4) decomposition and the rate of carbon deposit diffusion.Finally,incorporating 3 wt.%Fe into the 5Ni/10ZrAl catalyst resulted in the highest CO_(2) interaction,wide presence of reducible NiO-species,minimumgraphitic deposit and an 87%H_(2) yield.Our findings suggest that ironpromoted zirconia-alumina-supported Ni catalysts can be a cheap and excellent catalytic system for H_(2) production via DRM.

关 键 词：Dry reforming of methane Coke resistant Hydrogen production Cheap catalyst Fe-promoted catalyst 

分 类 号：O64[理学—物理化学]