High-yield pentanes-plus production via hydrogenation of carbon dioxide:Revealing new roles of zirconia as promoter of iron catalyst with long-term stability  

作　　者：Sheraz Ahmed Junjung Rohmat Sugiarto Wonjoong Yoon Muhammad Irshad Heuntae Jo Syeda Sidra Bibi Soek Ki Kim Muhammad Kashif Khan Jaehoon Kim 

机构地区：[1]School of Mechanical Engineering,Sungkyunkwan University,Jangan-Gu,Suwon,Gyeong Gi-Do 16419,Republic of Korea [2]SKKU Advanced Institute of Nano Technology(SAINT),Jangan-Gu,Suwon,Gyeong Gi-Do 16419,Republic of Korea [3]School of Chemical Engineering,Sungkyunkwan University,Jangan-Gu,Suwon,Gyeong Gi-Do 16419,Republic of Korea [4]Department of Chemical Engineering,Ajou University,Suwon 16499,Republic of Korea

出　　处：《Journal of Energy Chemistry》2025年第3期431-442,共12页能源化学(英文版)

基　　金：financial support from the National Research Council of Science&Technology(NST)grant funded by the Ministry of Science and ICT,Republic of Korea(CAP21012-100);the Korea Institute of Energy Technology Evaluation and Planning(KETEP),under the Ministry of Trade,Industry&Energy(MOTIE),Republic of Korea(20224C10300010);the KETEP grant funded by the MOTIE(20224000000440,Sector coupling energy industry advancement manpower training program)。

摘　　要：The metal oxide promoter decisively influences the overall performance of Fe catalysts in the direct hydrogenation of CO_(2)to C_(5+)hydrocarbons.However,the roles of metal oxide promoter for Fe catalysts,particularly ZrO_(2),have rarely been investigated.To plug this knowledge gap,a new Fe catalyst promoted with Na and partially reduced ZrO_(x)(Na-FeZrO_(x-9))was developed in this study;the catalyst helped produce C_(5+)hydrocarbons in remarkably high yield(26.3%at 360℃).In contrast to ZrO_(x)-free Fe-oxide,NaFeZrO_(x)-9 exhibited long-term stability for CO_(2)hydrogenation(750 h on-stream).The findings revealed multiple roles of ZrO_(x).Notably,ZrO_(x)decorated the Fe-oxide particles after calcination,thereby suppressing excess particle aggregation during the reaction,and acted as a"coke remover"to eliminate the carbon deposited on the catalyst surface.Additionally,oxygen vacancy(O_(v))sites in ZrO_(x)and electron transfer from ZrO_(x)to Fe sites facilitated the adsorption of CO_(2)at the Zr-Fe interface.

关 键 词：CO_(2)hydrogenation C5+hydrocarbons Fe catalysts ZrO_(2)promoter Fischer Tropsch synthesis Catalyst deactivation 

分 类 号：O643.36[理学—物理化学]