TY - JOUR
T1 - Design and synthesis of hydrophobic and stable mesoporous polymeric solid acid with ultra strong acid strength and excellent catalytic activities for biomass transformation
AU - Liu, Fujian
AU - Zheng, Anmin
AU - Noshadi, Iman
AU - Xiao, Feng Shou
N1 - Funding Information:
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 ).
PY - 2013/6/5
Y1 - 2013/6/5
N2 - 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 N2 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 31P NMR spectra and NH3-TPD curves show that the Brønsted 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-SO3H, 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.
AB - 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 N2 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 31P NMR spectra and NH3-TPD curves show that the Brønsted 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-SO3H, 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.
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U2 - 10.1016/j.apcatb.2013.01.063
DO - 10.1016/j.apcatb.2013.01.063
M3 - Article
AN - SCOPUS:84874686564
SN - 0926-3373
VL - 136-137
SP - 193
EP - 201
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -