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Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over H3PW12O40/Ce X Zr1−X O2 catalysts: Effect of acidity of the catalysts

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Abstract

Ce X Zr1−X O2 catalysts were prepared by a sol-gel method, and H3PW12O40/Ce X Zr1−X O2 catalysts were then prepared by an impregnation method. Both catalysts were applied to the direct synthesis of dimethyl carbonate from methanol and carbon dioxide in a batch reactor. NH3-TPD experiments were carried out to investigate the effect of acidity on the catalytic performance of Ce X Zr1−X O2 and H3PW12O40/Ce X Zr1−X O2. Catalytic performance of Ce X Zr1−X O2 and H3PW12O40/Ce X Zr1−X O2 was closely related to the acidity of the catalysts. The amount of dimethyl carbonate produced over both Ce X Zr1−X O2 and H3PW12O40/Ce X Zr1−X O2 catalysts increased with increasing acidity of the catalysts. This indicates that acidity of the catalyst played a key role in determining the catalytic performance of Ce X Zr1−X O2 and H3PW12O40/Ce X Zr1−X O2 in the direct synthesis of dimethyl carbonate from methanol and carbon dioxide. Catalytic activity of H3 PW12O40/Ce X Zr1−X O2 was higher than that of the corresponding Ce X Zr1−X O2. The enhanced catalytic performance of H3 PW12O40/Ce X Zr1−X O2 was attributed to the Brønsted acid sites provided by H3PW12O40.

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Authors and Affiliations

  1. School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul, 151-744, Korea

    Hye Jin Lee, Sunyoung Park & In Kyu Song

  2. Department of Chemical Engineering, Myongji University, Yongin, 449-728, Korea

    Ji Chul Jung

Authors
  1. Hye Jin Lee
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  2. Sunyoung Park
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  3. Ji Chul Jung
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  4. In Kyu Song
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Correspondence to In Kyu Song.

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Lee, H.J., Park, S., Jung, J.C. et al. Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over H3PW12O40/Ce X Zr1−X O2 catalysts: Effect of acidity of the catalysts. Korean J. Chem. Eng. 28, 1518–1522 (2011). https://doi.org/10.1007/s11814-011-0020-x

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  • DOI: https://doi.org/10.1007/s11814-011-0020-x

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