锡掺杂 PHTS 催化剂的制备及催化1,4-丁二醇酯化性能研究

摘要

Sn-PHTS Catalysts were synthesized by hydrothermal synthesis method in solution with low a-cidity using non-ionic surfactant P123 as template.All samples were characterized by XRD,TEM,N2 adsorption-desorption isotherms,NH3-TPD and FTIR spectra.The catalytic properties of Sn-PHTS for 1,4-butanediol es-terification were studied.The results showed that,Sn-PHTS possessed well-ordered hexagonal mesostructure;with the increasing of tin content,the acidity of Sn-PHTS reduced,while the specific surface area,the pore vol-ume and pore size almost kept the same.In the esterification of 1,4-butanediol and acetic acid,3Sn-PHTS showed higher catalytic activities,the yield of 1,4-butanediol monoacetate was 46·8%.%在低酸度溶液中，以三嵌段非离子表面活性剂 P123为模板剂，采用水热合成法制备锡掺杂 PHTS 催化剂（Sn-PHTS），采用 XRD、TEM、N2吸附-脱附、NH3-TPD 和 FTIR 等手段对其进行表征，并考察了 Sn-PHTS 催化1，4-丁二醇酯化的性能。结果表明，Sn-PHTS 催化剂具有有序的六方晶相结构，随着锡含量的增加，其比表面积、孔容、孔径变化较小，酸性逐渐减小；在 催 化1，4-丁二醇和醋酸的酯化反应中，3Sn-PHTS 表现出更高的催化活性，单酯收率达46·8％。