文献类型：期刊文献

英文题名：Steam reforming of methane on Ni/La-SBA-15 with high hydrothermal stability

作者：Miao, Xiaoling[1];Shen, Weihua[1];Gao, Xinhua[1];Fang, Yunjin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：28

期号：5

起止页码：1493

外文期刊名：JOURNAL OF POROUS MATERIALS

收录：;EI(收录号：20212310450002);WOS:【SCI-EXPANDED(收录号:WOS:000657231100001)】；

基金：This work is supported by the Shaanxi Coal Industry Joint Fund Project (No. 2019JLM-20), and supported by the National Natural Science Foundation of China (Project No. 21576083).

语种：英文

外文关键词：Lanthanum; Hydrothermal stability; SBA-15; Nickel; Steam reforming of methane

摘要：The prepared mesoporous silica SBA-15 was modified by doping with La by an incipient wet impregnation method. XRD, TEM, NMR and FT-IR were used to evaluate the influence of La doping amounts on the structure and hydrothermal stability of SBA-15. The results showed that the introduction of La could significantly improve the hydrothermal stability of the mesoporous silica SBA-15. The silanol groups on the defect sites of pore surface are the main place for lanthanum to enter. After being treated with steam at 750 degrees C for 40 h, La-SBA-15 with appropriated amount of La loading maintained a highly ordered structure. In addition, a mesoporous Ni/5La-SBA-15 catalyst was prepared by an incipient wet impregnation method, and steam reforming of methane was carried out on this catalyst for 100 h at 750 degrees C with CH4:H2O:N-2 = 4:12:1. During the reaction, the CH4 conversion rate remained unchanged, and the catalyst activity did not decrease, confirming that La-SBA-15 can be used as a hydrothermally stable support for catalytic reactions contained steam.