文献类型：期刊文献

英文题名：A-site deficient titanate perovskite surface with exsolved nickel nanoparticles for ethanol steam reforming

作者：Lou, Shifeng[1];Meng, Xuan[1];Liu, Naiwang[1];Shi, Li[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：274

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20231413831372);WOS:【SCI-EXPANDED(收录号:WOS:000968709800001)】；

基金：Acknowledgements The authors acknowledge Prof. John T.S. Irvine and JTSI group in University of St. Andrews for advice and guidance, funding from the EPSRC (grant numbers EP/L017008/1, EP/R023751/1 and EP/T019298/1) , and CSC for the scholarship.

语种：英文

外文关键词：Exsolution; Perovskite oxide; Ethanol steam reforming

摘要：Ethanol steam reforming over supported nickel catalysts has become an attractive industrial hydrogen production process. In this work, A-site deficient titanate perovskites with different doping amount of Ni as B-site substitution, La0.4Ca0.4NixTi1-xO3-5 (x = 0.03, 0.06, 0.09), were synthesized by solid state method. Finely dispersed Ni nanoparticles were obtained by reduction in 5% hydrogen at 800 degrees C. Complete conversion of ethanol and a hydrogen yield of 70% was achieved on La0.4Ca0.4Ni0.09Ti0.91O2.91 at 800 degrees C with a steam/carbon ratio of 3 and a WHSV of 8.8 g(ethanol)/(g(cat)center dot h). SEM and TEM images of revealed that agglomeration of Ni nanoparticles was inhibited on post-ESR La0.4Ca0.4Ni0.09Ti0.91O2.91 catalyst, indicating a strong metal-support interface was formed via exsolution process. Meanwhile the resistance towards coking as well as its catalytic stability under high feedstock flowrate shows its significance as a potential reforming catalyst. (c) 2023 Published by Elsevier Ltd.