caa a22 4500 606173498 CHVBK 20210128100733.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0458-x doi (NATIONALLICENCE)springer-10.1007/s11244-015-0458-x Methanol Steam Reforming on Perovskite-Type Oxides LaCo1−x−yPdxZnyO3±δ: Effect of Pd/Zn on CO2 Selectivity [Elektronische Daten] [Jagoda Kuc, Anke Weidenkaff, Santhosh Matam] The perovskite-type oxides LaCoO3±δ (LCO) with and without substitution of Co by Pd and/or Zn are studied for steam reforming of methanol (SRM). The catalysts LaCo1−x−yPdxZnyO3±δ are synthesized by amorphous citrate method and subjected to calcination at 800°C for 2h. The catalysts are characterized by inductively coupled plasma optical emission spectroscopy (ICP-OES), N2-physisorption (BET), X-ray diffraction (XRD) and tested in SRM reaction. The surface area of the catalysts is around 9 (±1) m2/g. The XRD patterns of the catalysts reflect only rhombohedral crystal structure, indicating the phase purity of the perovskites. The SRM performance of the catalysts, especially the CO2 selectivity below 275°C, is strongly dependent on the catalyst composition and reaction temperature. The CO2 selectivity profile of Pd and Zn containing LaCo0.85Pd0.075Zn0.075O3±δ consists of two distinct maxima, one at 225°C and the other above 375°C. The former is missing on un-substituted LCO or mono metal substituted LaCo0.87Pd0.13O3±δ and LaCo0.89Zn0.11O3±δ, which is attributed to CO2 selective phase related to Pd and Zn. The high temperature CO2 selectivity maximum of the catalysts is not dependent on the Co substitution by Pd and/or Zn and is ascribed, in general, to the bulk catalyst composition. Springer Science+Business Media New York, 2015 LaCoO3±δ nationallicence LaCo1−x−yPdxZnyO3±δ nationallicence SRM nationallicence CO2 selectivity nationallicence Kuc Jagoda Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut Weidenkaff Anke Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut Matam Santhosh Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 905-909 1022-5528 58:14-17<905 2015 58 11244 https://doi.org/10.1007/s11244-015-0458-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0458-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuc Jagoda Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Weidenkaff Anke Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Matam Santhosh Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 905-909 1022-5528 58:14-17<905 2015 58 11244