Interaction between metal and support: Effects of support acidity on adspecies of co over Ru |
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| Authors: | Xin Qin Shi Xianxiang Ying Pinliang and Guo Xiexian |
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| Institution: | (1) Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China |
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| Abstract: | Supported Ru/X catalysts (X: SiO2, Al2O3, SiO2·Al2O3, HY) have been investigated by IR and TPR (temperature programmed reduction). Due to interaction between Ru and Lewis or Brönsted sites of the support, the Ru sites become electron-deficient. Stronger acidity of the support makes the Ru sites more electron-deficient, and as a result, adspecies of Ru+ (CO)4 or Ru+(CO)2 can occur more easily.
             Ru/X (X:SiO2, Al2O3, SiO2·Al2O3, HY)          -    .   Ru       .    ,  Ru+(CO)4 Ru+(CO)2.
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