文献类型：期刊文献

英文题名：Sorption-enhanced methanol steam reforming for hydrogen production by combined copper-based catalysts with hydrotalcites

作者：Qi, Tongyichao[1,2];Yang, Ying[1,2];Wu, Yijiang[1,2];Wang, Jin[1,2];Li, Ping[1,2];Yu, Jianguo[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake, Shanghai 200237, Peoples R China

年份：2018

卷号：127

起止页码：72

外文期刊名：CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

收录：;EI(收录号：20181304963932);WOS:【SCI-EXPANDED(收录号:WOS:000432104600010)】；

基金：The authors wish to acknowledge National Nature Science Foundation of China (Grant U1610102, 21506063) and the International S&T Cooperation Program of China (Grant 2016YFE0132500, 2015DFG42220). This work is supported by "the Fundamental Research Funds for the Central Universities. We appreciate the nice comments of the reviewers, which are very helpful for us to improve this work.

语种：英文

外文关键词：Methanol steam reforming; Hydrogen; Copper-based catalyst; Hydrotalcite; Sorption enhanced reaction

摘要：Hydrogen is stored in liquid methanol to ensure safe transportation, and when needed, hydrogen is produced in situ through methanol steam reforming at a relatively low temperature (about 473 K-573 K), which is considered as a significant breakthrough in the storage and transport system of hydrogen energy. To improve methanol conversion, the process intensification technology, called as sorption enhanced methanol steam reforming, is developed, where the configuration between catalyst and sorbent is investigated experimentally in this work. Catalyst is commercial CuO/ZnO/Al2O3 catalyst, and sorbent is K2CO3 promoted hydrotalcite (K-hydrotalcite). Two kinds of packed modes in the reactor are tested and compared with each other, one packed mode with the mixture of catalyst particles and sorbent particles, and the other packed mode with composite sorbent-catalyst particles pelleted with the mixture of catalyst powders and sorbent powders. According to the experimental results, it is found that CO2 adsorption by K-hydrotalcites enhances significantly methanol steam reforming in both packing modes. When combined CuO/ZnO/Al2O3 catalyst with K-hydrotalcite into one-body composite pellet, the methanol conversion reduces due to the loss of catalytic activities under the alkaline atmosphere of K-hydrotalcites. Therefore, attention should be paid on the synergic relationship between catalysts and sorbents for sorption enhanced reaction.