In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume...In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume of0.68cm 3 ·g -1 .The synthesis cost of FDU-7is much l ower than that of SBA-15(just 25%of SBA-15),which will be much helpful to the industrializa tion of such mesoporous materials.展开更多
文摘In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume of0.68cm 3 ·g -1 .The synthesis cost of FDU-7is much l ower than that of SBA-15(just 25%of SBA-15),which will be much helpful to the industrializa tion of such mesoporous materials.
文摘文章采用巯基丙基三甲氧基硅烷(MPTMS)对介孔泡沫二氧化硅(mesocellular silica foam,MCF)进行接枝磺化,制备了Pr-SO3H/MCF固体酸催化剂,并考察了苯基三甲氧基硅烷疏水改性对苯甲酸甲酯合成的影响。采用氮气吸附脱附(BET)、透射电子显微镜(transmission electron microscope,TEM)、接触角、元素分析仪等手段对催化剂进行表征。结果表明,苯基三甲氧基硅烷改性后的Ph/Pr-SO3H/MCF催化剂,比表面积略有降低,疏水性明显提高。由于苯环与苯环之间形成π-π键,增加了对反应物苯甲酸的吸附能力,在催化剂表面形成了高浓度苯甲酸微区,从而增加了酯化反应速率。同时由于表面的疏水性使得副产物水快速排出催化剂表面,避免催化剂水合,提高了催化剂的耐水性及稳定性。
