适合SBA-15介孔材料工业化生产的改良方法  

Improved Synthesis of SBA-15 Mesoporous Silica Fitting for Industrial Production

作　　者：李艳荣[1] 宋明娟[1] 顾海芳[2] 黄曜[2] 牛国兴[1] 赵东元[1] 

机构地区：[1]复旦大学化学系,上海200433 [2]复旦大学材料系,上海200433

出　　处：《催化学报》2012年第8期1360-1366,共7页

基　　金：国家重点基础研究发展计划(973计划;2010CB226901);国家自然科学基金(20890123)~~

摘　　要：在SBA-15介孔材料100L中试和2m3工业放大合成基础上,采用多次水解合并晶化、母液循环使用和以工业正硅酸乙酯(TEOS)原料为硅源三种改良方法,提高SBA-15材料的合成效率,减少废酸水排放和降低原料成本.结果表明,母液经加热蒸除乙醇至5%和工业原料TEOS经蒸除沸点低于163oC的前馏分后使用,在有效保证合成出结构性能良好SBA-15材料的同时,可使生产效率提高1倍,分别减少50%和90%三嵌段共聚物和盐酸用量,且几乎无废水排放,最终节约SBA-15原料成本约60%.这些改良方法有利于SBA-15材料工业生产时的环境保护和成本控制,具有很高可行性.On the basis of scale-up synthesis of SBA-15 silica in 100 L and 2 m3 reactors, some improved methods were used to prepare SBA-15 silica by crystallizing under high ratio of SiO2/H20, recycling mother liquid, and using the industrial raw material of TEOS as Si source. It is necessary to openly heat the mother liquid over 95℃ for 2 h to evaporate ethanol and distill the industrial material of TEOS to remove the fractions less than 163℃ before they are used. By these ways, almost no wastes of acid and water are discharged; 50% of P123 and 90% of HC1 are saved, respectively, and the cost of SBA-15 greatly drops to 40% of the original. Furthermore, the preparation efficiency increases as twice as before. Therefore, they have great advantages in industrial production of SBA-15 silica for the purposes of environ- mental protection and cost control.

关 键 词：SBA-15 介孔材料 工业生产 成本控制 母液循环 环境友好 

分 类 号：O643.36[理学—物理化学]