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The incorporation of carbon dioxide (CO2) into industrially useful organic products is receiving significant attention as CO2 is abundant, inexpensive and non-toxic [1]. One of the promising reactions in this area is the direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol [2]. DMC has increasingly attracted interest for its benign nature and wide applications. It is used as an alternative to the notorious phosgene in several organic transformations [3], starting materials for polycarbonates resin, electrolyte of lithium-ion batteries, an octane booster in gasoline and so on [4]. In recent years, a variety of catalysts for this reaction have been investigated, such as organometallic compounds [5], metal (IV) tetra alkoxide [6], potassium carbonate [7], zirconia-based [8¨C10] catalysts, cerium-based [11,12] catalysts, heteropoly compounds [13], H3PO4¨CV2O5 [14], Cu¨CNi bimetallic [15¨C18] supported on different carriers. However, these catalysts suffer from tedious preparation procedures or agglomeration of active components, which might restrict their effective use and wide application from the industrial point of view. Transition group elements have drawn considerable attention to interact with |
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3Â¥2013-12-21 21:37:59
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4Â¥2013-12-21 21:38:16
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