Kim, A. Rong Lee, Balsang Park, Myung June Moon, Dong Ju Bae, Jong Wook 2024-01-20T15:05:42Z 2024-01-20T15:05:42Z 2021-09-05 2012-03 1566-7367 https://pubs.kist.re.kr/handle/201004/129475 Water gas shift (WGS) reaction was carried out on the coprecipitated CuO-Cr2O3-Ga2O3 mixed oxides to elucidate the effects of Ga2O3 species to catalytic performances. WGS catalysts are prepared at a fixed molar ratio of Cu/(Cu + Ga) at 1.0/0.1 by varying Ga/Cr molar ratio from 0 to 4. The catalytic activities on CuO-Cr2O3-Ga2O3 are found to be in the shape of volcano curve in terms of Ga/Cr molar ratio and the highest activity was observed on the catalyst having equimolar ratio of Ga/Cr in all tested temperature ranges of 160-280 degrees C. The observed activities are strongly related with the metallic surface area of copper crystallites, and the high surface area of metallic copper could be obtained by controlling the formation rate of copper-chromium nuclei at an optimum Ga/Cr molar ratio on CuO-Cr2O3-Ga2O3 mixed oxides. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV PRECIPITATION CHROMIUM Catalytic performance on CuO-Cr2O3-Ga2O3 mixed oxides for water gas shift reaction: Effects of Ga/Cr molar ratio Article 10.1016/j.catcom.2011.12.023 1 CATALYSIS COMMUNICATIONS, v.19, pp.66 - 69 CATALYSIS COMMUNICATIONS 19 66 69 scie scopus 000301163700014 2-s2.0-84862798114 Chemistry, Physical Chemistry Article PRECIPITATION CHROMIUM WGS CuO-Cr2O3-Ga2O3 Surface area of copper Ga/Cr molar ratio Copper crystallite size