文献类型：期刊文献

英文题名：Design and synthesis of hydrophobic and stable mesoporous polymeric solid acid with ultra strong acid strength and excellent catalytic activities for biomass transformation

作者：Liu, Fujian[1,3];Zheng, Anmin[2];Noshadi, Iman[4];Xiao, Feng-Shou[3]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China;[2]Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Ctr Magnet Resonance, Wuhan 430071, Peoples R China;[3]Zhejiang Univ, Dept Chem, Key Lab Appl Chem Zhejiang Prov, Hangzhou 310028, Zhejiang, Peoples R China;[4]Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

年份：2013

卷号：136

起止页码：193

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：SCI-EXPANDED(收录号：WOS:000317539400023)、、EI(收录号：20131116116994)、Scopus(收录号：2-s2.0-84874686564)、WOS

基金：This work was supported by the National Natural Science Foundation of China (21203122 and 21173255), the Foundation of Science and Technology of Shaoxing Bureau (2012B70018) and Postdoctoral Foundation of China (2012M520062).

语种：英文

外文关键词：Solid strong acid; Mesoporous polymers; Hydrophobicity; Wettability; Biomass transformation

外文摘要：Novel and efficient mesoporous polydivinylbenzene (PDVB) based solid strong acid (PDVB-SO3H-SO2CF3) has been successfully prepared by grafting of strong electron withdrawing group of -SO2CF3 onto the network of performed mesoporous solid acid of PDVB-SO3H, which could be synthesized from sulfonation of superhydrophobic mesoporous PDVB or copolymerization of DVB with sodium p-styrene sulfonate. Characterizations of N-2 sorption isotherms, TG curves and contact angle tests show that PDVB-SO3H-SO2CF3 has large Brunauer-Emmett-Teller (BET) surface area, superior thermal stability, good hydrophobicity and oleophilicity. Solid P-31 NMR spectra and NH3-TPD curves show that the Bronsted acidic site in PDVB-SO3H-SO2CF3 has been significantly enhanced and rather homogeneously distributed when compared with that of PDVB-SO3H. Catalytic tests show that PDVB-SO3H-SO2CF3 exhibits excellent catalytic activities and good recyclability in biomass transformation toward transesterification to biodiesel and depolymerization of crystalline cellulose to sugars when compared with those of PDVB-SO3 H, solid strong acids of SO4/ZrO2 and Nafion NR50. The excellent catalytic activity and good recyclability of PDVB-SO3H-SO2CF3 result from its unique characters such as large surface area, ultra strong acid strength, adjustable hydrophobic-oleophilic and stable network. (C) 2013 Elsevier B.V. All rights reserved.