화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.16, No.5, 662-665, September, 2010
Direct preparation of dichloropropanol from glycerol and hydrochloric acid gas using heteropolyacid (HPA) catalyst by heterogeneous gas phase reaction
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Direct preparation of dichloropropanol (DCP) from glycerol and hydrochloric acid gas was carried out in a heterogeneous gas phase reactor using H(3)PMo(12-X)W(X)O(40) (X = 0, 3, 6, 9, and 12), H(4)SiW(12)O(40), and H(4)SiMo(12)O(40) heteropolyacid (HPA) catalysts. Acid property of the HPA catalyst was determined by NH3-TPD measurement in order to correlate the catalytic activity with the acid property of the catalyst. Acid strength of the HPA catalyst played a key role in determining the catalytic performance in the reaction. Yield for DCP increased with increasing acid strength of the catalyst. Among the catalysts tested, H(3)PW(12)O(40) with the highest acid strength showed the highest yield for DCP.