文献类型：期刊文献

英文题名：Design and Synthesis of Mesoporous Polymer-Based Solid Acid Catalysts with Excellent Hydrophobicity and Extraordinary Catalytic Activity

作者：Liu, Fujian[1];Kong, Weiping[1];Qi, Chenze[1];Zhu, Longfeng[3];Xiao, Feng-Shou[2]

机构：[1]Shaoxing Univ, Inst Appl Chem, Dept Chem, Shaoxing 312000, Peoples R China;[2]Zhejiang Univ, Dept Chem, Hangzhou 310028, Zhejiang, Peoples R China;[3]Jilin Univ, Dept Chem, Changchun 130012, Peoples R China

年份：2012

卷号：2

期号：4

起止页码：565

外文期刊名：ACS CATALYSIS

收录：SCI-EXPANDED(收录号：WOS:000302387600013)、、EI(收录号：20121614946961)、Scopus(收录号：2-s2.0-84859607663)、WOS

语种：英文

外文关键词：mesoporous polymers; hydrophobicity; solid acid catalysts; copolymerization; acid-catalyzed liquid reactions

外文摘要：Novel excellent hydrophobic- mesoporous- polymer-based solid acid catalysts have been successfully synthesized by copolymerization of divinylbenzene (DVB) with sodium p-styrene sulfonate (H-PDVB-x-SO3H's) under solvothermal conditions. N-2 isotherms and TEM images showed that H-PDVB-x-SO3H's have high BET surface areas, large pore volumes, and abundant mesoporosity; CHNS element analysis and acid base titration technology showed that H-PDVB-x-SO3H's have adjustable sulfur contents (0.31-2.36 mmol/g) and acidic concentrations (0.26-1.86 mmol/g); TG curves showed that H-PDVB-x-SO3H's exhibited much higher stability of the active site (372 degrees C) than that of the acidic resin of Amberlyst 15 (312 degrees C); contact angle and water adsorption tests showed that H-PDVB-x-SO3H's exhibited excellent hydrophobic properties. Catalytic tests in esterification of acetic add with cyclohexanol, esterification of acetic acid with 1-butanol, and condensation of benzaldehyde with ethylene glycol showed that H-PDVB-x-SO3H's were more active than those of Amberlyst 15, SO3H-functionalized ordered mesoporous silicas, and beta and USY zeolites, which were even comparable with that of homogeneous H2SO4. The superior hydrophobicity of solid acid catalysts would be favorable for achieving excellent catalytic performance because water usually acts as a byproduct in various-acid-catalyzed reactions, which can easily poison the acid sites and result in opposite reactions. Synthesis of porous solid acid catalysts with good hydrophobicity would be very important for their applications.