文献类型：期刊文献

英文题名：Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts: the influence of zeolite type

作者：Xie, Qinglong[1,2];Chen, Paul[1,2];Peng, Pu[1,2];Liu, Shiyu[1,2];Peng, Peng[1,2];Zhang, Bo[1,2];Cheng, Yanling[1,2,3];Wan, Yiqin[1,2,4];Liu, Yuhuan[1,2,4];Ruan, Roger[1,2,4]

第一作者：Xie, Qinglong

通讯作者：Ruan, R[1]

机构：[1]Univ Minnesota, Ctr Biorefining, St Paul, MN 55108 USA;[2]Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA;[3]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[4]Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, Nanchang 330047, Jiangxi, Peoples R China

第一机构：Univ Minnesota, Ctr Biorefining, St Paul, MN 55108 USA

通讯机构：[1]corresponding author), Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA.

年份：2015

卷号：5

期号：33

起止页码：26301-26307

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20154201379546);Scopus(收录号：2-s2.0-84943605629);WOS:【SCI-EXPANDED(收录号:WOS:000351494800083)】；

基金：The authors would like to express their great appreciation to Minnesota Environment and Natural Resources Trust Fund, North Central Regional Sun Grant Center at South Dakota State University through a grant provided by the US Department of Agriculture (2013-38502-21424) and a grant provided by the US Department of Transportation, Office of the Secretary (DTOS59-07-G-00054), and University of Minnesota Center for Biorefining, as well as China Scholarship Council (CSC), High Technology Research and Development Program of China (2012AA021704, 2014AA022002), Beijing Municipal Science and Technology Commission (z141109004414002), International Science and Technology Cooperation Program of China (2014DFA61040), National High-tech R&D Program of China (2012AA021205, 2012AA101809), National Natural Science Foundation of China (21266022) for their financial support for this work. Parts of this work were carried out in the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network (www.mrfn.org) via the MRSEC program.

语种：英文

外文关键词：Alumina - Aluminum oxide - II-VI semiconductors - Oxide minerals - Pore structure - Sintering - Synthesis gas - Zeolites - Zinc oxide

摘要：In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al2O3 and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.