Morphology dependent? Elucidating the catalyst structures of Ni/Ce_(0.75)Zr_(0.25)O_(2) in the steam reforming of acetic acid  

作　　者：Ravipart Kun-udom Salina Jantarang Zehui Du Boonyarach Kitiyanan Thirasak Rirksomboon Vissanu Meeyoo 

机构地区：[1]The Petroleum and Petrochemical College,Chulalongkorn University,Bangkok,10330,Thailand [2]Center of Excellence on Petrochemical and Materials Technology,Bangkok,10530,Thailand [3]Center for Advanced Studies in Nanotechnology for Chemical,Food and Agricultural Industries,Kasetsart University Institute for Advanced Studies,Kasetsart University,Bangkok,10900,Thailand [4]Centre for Advanced Materials and Environmental Research,Mahanakorn University of Technology,Bangkok,10530,Thailand

出　　处：《Green Chemical Engineering》2022年第1期44-54,共11页绿色化学工程（英文）

基　　金：financial support from the Petroleum and Petrochemical College,Chulalongkorn University and the Center of Excellence on Petrochemical and Materials Technology;the Ratchadapisek Somphot Fund for Postdoctoral Fellowship,Chulalongkorn University。

摘　　要：In this work,the steam reforming of acetic acid was catalyzed by Ni-based catalysts supported on ceria-zirconia of different morphological structures(nanopolyhedra,nanorods,and nanocubes).The altered shapes led to the variation in catalyst properties,such as the exposed planes,ease of Ni reduction/oxidation,and carbon removal,which affected its catalytic performance.Additionally,it was found that the exposed planes present in cubic{100}and rod structures({100}and{110})enhanced the formation of Ni^(0) and subsequently promoted the reforming reaction.Moreover,oxygen vacancies and mobility properties of{100}and{110}exposed planes can promote the oxidation reaction of carbon,resulting in a stable catalyst for the reforming of acetic acid.The results also showed that the type of depositing carbons was influenced by the support morphology.All the catalysts showed a100% acetic acid conversion with the 15Ni/NC-Ce Zr(cubic structure)catalyst exhibited the highest hydrogen yield.

关 键 词：Acetic acid Steam reforming NICKEL CERIA-ZIRCONIA Nanoparticles 

分 类 号：TQ116.2[化学工程—无机化工] TQ426