有机阴离子柱撑水滑石催化酯交换合成碳酸二苯酯  

Synthesis of Diphenyl Carbonate through Transesterification Catalyzed by Organic Anion-Pillared Hydrotalcites

作　　者：黄金明[1] 王庶[1] 白荣献[1] 李光兴[1] 

机构地区：[1]华中科技大学化学系,湖北武汉430074

出　　处：《催化学报》2006年第2期103-105,共3页

基　　金：国家高技术研究发展计划(863计划)资助项目(2004AA32G030)

摘　　要：A series of organic anion-pillared hydrotalcites were synthesized by the ion exchange method and characterized by X-ray diffraction and Fourier transform infrared spectroscopy.The hydrotalcite precursor and pillared hydrotalcites with different anions was tested as catalysts in transesterification of dimethyl carbonate（DMC） with phenol.The results show that the catalytic selectivity of this transesterification reaction over these organic anion-pillared hydrotalcites is significantly improved.The catalytic selectivities of C4H4O4-,C6H8O4-,C10H16O4-,（1,4-）C8H4O4-,and C7H5O2-pillared hydrotalcites for transesterified products（diphenyl carbonate and methyl phenyl carbonate） are all greater than 90%,at least 10% higher than that of the hydrotalcite precursor.Under the conditions of（n（phenol））/（n（DMC））=4,catalyst amount=1.5%,and t=10 h,the C6H8O4-pillared hydrotalcite presents the best catalytic performance,and the DMC conversion and the selectivity for transesterified products reach 43.8% and 93.2%,respectively.A series of organic anion-pillared hydrotalcites were synthesized by the ion exchange method and characterized by X-ray diffraction and Fourier transform infrared spectroscopy. The hydrotalcite precursor and pillared hydrotalcites with different anions was tested as catalysts in transesterification of dimethyl carbonate （DMC） with phenol. The results show that the catalytic selectivity of this transesterification reaction over these organic anion-pillared hydrotalcites is significantly improved. The catalytic selectivities of C4H4O4-, C6H8O4-, C10H16O4-, 1,4-C8H4O4-, and C7H5O2-pillared hydrotalcites for transesterified products （diphenyl carbonate and methyl phenyl carbonate） are all greater than 90 %, at least 10 % higher than that of the hydrotalcite precursor. Under the conditions of n （phenol）/n （DMC） = 4, catalyst amount = 1.5 %, and t = 10 h, the C6H8O4- pillared hydrotalcite presents the best catalytic performance, and the DMC conversion and the selectivity for transesterified products reach 43.8 % and 93.2 %, respectively.

关 键 词：柱撑水滑石 碳酸二苯酯 酯交换 碳酸二甲酯 苯酚 

分 类 号：O643.3[理学—物理化学] O625.523[理学—化学]