Nickel-based cerium zirconate inorganic complex structures for CO_(2)valorisation via dry reforming of methane

作     者：Juan Luis Martín-Espejo Loukia-Pantzechroula Merkouri Jesús Gándara-Loe José Antonio Odriozola Tomas Ramirez Reina Laura Pastor-Pérez Juan Luis Martín-Espejo;Loukia-Pantzechroula Merkouri;Jesús Gándara-Loe;José Antonio Odriozola;Tomas Ramirez Reina;Laura Pastor-Pérez

作者机构：Department of Inorganic Chemistry and Material Sciences Institute of SevilleUniversity of Seville-CSICSeville 41092Spain Department of Chemical and Process EngineeringUniversity of SurreyGuildford GU27XHUnited Kingdom 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第140卷第6期

页      面：12-23页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by grant PID2019-108502RJ-I00 and grant IJC2019-040560-I both funded by MCIN/AEI/10.13039/501100011033 RYC2018-024387-I funded by MCIN/AEI/10.13039/501100011033 and by ESF Investing in your future 

主　　题：CO_(2)conversion Dry reforming of methane Nickel catalysts Pyrochlore Cerium zirconate 

摘      要：The increasing anthropogenic emissions of greenhouse gases(GHG)is encouraging extensive research in CO_(2)*** reforming of methane(DRM)depicts a viable strategy to convert both CO_(2)and CH4into syngas,a worthwhile chemical *** the different active phases for DRM,the use of nickel as catalyst is economically favourable,but typically deactivates due to sintering and carbon *** stabilisation of Ni at different loadings in cerium zirconate inorganic complex structures is investigated in this work as strategy to develop robust Ni-based DRM *** and TPR-H2analyses confirmed the existence of different phases according to the Ni loading in these ***,superficial Ni is observed as well as the existence of a CeNiO_(3)perovskite *** catalytic activity was tested,proving that 10 wt.%Ni loading is the optimum which maximises *** catalyst was also tested in long-term stability experiments at 600and 800℃in order to study the potential deactivation issues at two different *** 600℃,carbon formation is the main cause of catalytic deactivation,whereas a robust stability is shown at 800℃,observing no sintering of the active phase evidencing the success of this strategy rendering a new family of economically appealing CO_(2)and biogas mixtures upgrading catalysts.