CeO制备方法对CH的CO重整中Ni/CeO性能及表现的影响。（注：原文中“CH.”表述不完整，可能影响准确理解，推测是某种含碳化合物如“CH₄”等）

Effect of preparation methods of CeO on the properties and performance of Ni/CeO in CO reforming of CH.

作者信息

Ni Zenan, Djitcheu Xavier, Gao Xiaoxu, Wang Jian, Liu Huimin, Zhang Qijian

机构信息

School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou, 121001, China.

出版信息

Sci Rep. 2022 Mar 29;12(1):5344. doi: 10.1038/s41598-022-09291-w.

DOI:10.1038/s41598-022-09291-w

PMID:35351943

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8964754/

Abstract

CO reforming of CH (CRM) is not only beneficial to environmental protection, but also valuable for industrial application. Different CeO supports were prepared to investigate the matching between Ni and CeO over Ni/CeO and its effect on CRM. The physicochemical properties of Ni/CeO-C (commercial CeO), Ni/CeO-H (hydrothermal method) as well as Ni/CeO-P (precipitation method) were characterized by XRD, N adsorption at - 196 °C, TEM, SEM-EDS, H-TPR, NH-TPD and XPS. Ni with good dispersion and CeO with more oxygen vacancies were obtained on Ni/CeO-H, proving the influence on Ni/CeO catalysts caused by the preparation methods of CeO. The initial conversion of both CO and CH of Ni/CeO-H was more than five times that of Ni/CeO-P and Ni/CeO-C. The better matching between Ni and CeO on Ni/CeO-H was the reason for its best catalytic performance in comparison with the Ni/CeO-C and Ni/CeO-P samples.

摘要

甲烷的二氧化碳重整（CRM）不仅有利于环境保护，而且在工业应用中也具有重要价值。制备了不同的CeO载体，以研究Ni/CeO催化剂上Ni与CeO之间的匹配情况及其对CRM的影响。通过XRD、-196°C下的N吸附、TEM、SEM-EDS、H-TPR、NH-TPD和XPS对Ni/CeO-C（商业CeO）、Ni/CeO-H（水热法）以及Ni/CeO-P（沉淀法）的物理化学性质进行了表征。在Ni/CeO-H上获得了具有良好分散性的Ni和更多氧空位的CeO，证明了CeO制备方法对Ni/CeO催化剂的影响。Ni/CeO-H的CO和CH的初始转化率是Ni/CeO-P和Ni/CeO-C的五倍以上。与Ni/CeO-C和Ni/CeO-P样品相比，Ni/CeO-H上Ni与CeO之间更好的匹配是其具有最佳催化性能的原因。