Journal
CATALYSIS LETTERS
Volume 144, Issue 2, Pages 320-324Publisher
SPRINGER
DOI: 10.1007/s10562-013-1115-2
Keywords
Organic-inorganic hybrid materials; Trimethylchlorosilane (TMCS); Hydrophobicity; Silylation temperature; Diethyl carbonate (DEC)
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Funding
- National Natural Science Foundation of China [21106054]
- Science Research Foundation for New Scholars of Ministry of Education [20100093120003]
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A new class of organic-inorganic hybrid materials were prepared by combining Cu-HMS with a silylation agent, trimethylchlorosilane (TMCS) via a simple silylation process at different silylation temperatures. They were characterized by a series of techniques including FT-IR, powder XRD, Nitrogen adsorption-desorption, TG analysis and water adsorption capacity test. It was demonstrated that silylation of PdCl2/Cu-HMS catalysts with TMCS enhanced their hydrophobicity, improved their activity and stability and importantly kept the excellent selectivity to diethyl carbonate (DEC) by oxidative carbonylation of ethanol in the gas-phase reaction. Moreover, the silylated samples obtained at 60 A degrees C showed a better conversion of EtOH of 6.1 % and STY of DEC of 140.8 mg g(-1) h(-1).
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