caa a22 4500 445870427 CHVBK 20180317145510.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10563-010-9103-7 doi (NATIONALLICENCE)springer-10.1007/s10563-010-9103-7 Dimethyl Ether—Reforming Catalysts for Hydrogen Production [Elektronische Daten] [Kajornsak Faungnawakij, Koichi Eguchi] This article reviews our recent works on dimethyl ether steam reforming (DME SR) over nanocomposite catalysts of copper-based spinel oxide and solid-acid catalyst. A series of Cu-based spinels was prepared by citric acid complexation method and their catalytic performance was studied in terms of activity, selectivity, and stability. The influence of preparation conditions, such as calcination temperature, reduction temperature, and chemical composition, and reforming conditions, such as steam-to-carbon ratio and reaction temperature, was systematically studied. Effect of type of solid-acid catalyst was also reported. Zeolite-based composites and alumina-based ones are highly active in temperature ranges of <300°C and >300°C, respectively. The composite of CuFe2O4 and alumina treated thermally in air at 700-800°C exhibited excellent activity and stability in DME SR. Upon H2 reduction, phase separation of copper spinel to metallic copper nanoparticles and host oxides proceeds. The high dispersion of the Cu particles (Cu1+-rich surface of ca. 70%) on the hosts, and the strong chemical interaction between them could be observed. The H2-rich reformate (>70% H2) could be attained for longer than 800h at 375°C, showing the good potential for practical use in H2 and fuel cell applications. Doping Ni to CuFe2O4 significantly enhanced the stability of the catalyst, in accordance with the alloying effect. Regeneration of the degraded catalysts could be obtained by simple heat-treatment since carbon deposits were removed, and spinel structures were reconstructed. Springer Science+Business Media, LLC, 2010 Copper spinel oxide nationallicence Cu/ZnO/Al2O3 nationallicence Alumina nationallicence Zeolite nationallicence Nanocomposite nationallicence Dimethyl ether nationallicence Steam reforming nationallicence Hydrolysis nationallicence Hydrogen nationallicence Faungnawakij Kajornsak National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, 111 Thailand Science Park, Paholyothin Rd., 12120, Patumthani, Thailand aut Eguchi Koichi Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, 615-8510, Kyoto, Japan aut Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/1(2011-03-01), 12-24 1571-1013 15:1<12 2011 15 10563 https://doi.org/10.1007/s10563-010-9103-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10563-010-9103-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Faungnawakij Kajornsak National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, 111 Thailand Science Park, Paholyothin Rd., 12120, Patumthani, Thailand aut NATIONALLICENCE 700 1- Eguchi Koichi Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, 615-8510, Kyoto, Japan aut NATIONALLICENCE 773 0- Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/1(2011-03-01), 12-24 1571-1013 15:1<12 2011 15 10563 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer