CRCU

Chemical Research in Chinese Universities ›› 1992, Vol. 8 ›› Issue (4): 348-354.

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Activity and Selectivity in CO Hydrogenation with Silica-supported Ru-Co Bimetallic Cluster-derived Catalysts

XIAO Feng-shou1, XU Ru-ren1, Fukuoka A.2, Ichikawa M.2   

  1. 1. Department of Chemistry, Jitin University, Changchun, 130023;
    2. Catalysis Research Center, Hokkaido University, Sapporo 060, Japan
  • Received:1991-12-10 Online:1992-12-24 Published:2011-08-17

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Abstract: The catalytic performance of bimetallic Ru-Co catalysts prepared from a series of H3Ru3Co(CO)12. RuCo2(CO)11and HRuCo3(CO)12in CO hydrogenation was investigated, and it was found that the Ru-Co bimetallic carbonyl cluster-derived catalysts showed a high activity for products, particularly higher oxygenates, compared with the catalysts prepared from impregnation or co-impregnation of monometallic clusters such as [HRu3(CO)11] and Co4(CO)12The selectivity for oxygenates in CO hydrogenation highly increased with the molar ratio of Co/Ru in the Ru-Co bimetallic cluster to CO/H2in feed gas. Raising reaction temperature led to an intensive increase of CO conversion and a considerable decrease of selectivity for oxygenates. In situ FT-IRstudies revealed that the band at 1584 cm-1on Ru-Co bimetallic cluster-derived catalysts at 453 Kunder syngas (CO/H2=0. 5) has a good linear relationship to rates of oxygenate formation.

Key words: Higher oxygenates, Ru-Co bimetallic catalysts, bimetallic carbonyl cluster, SiO2