文献类型：期刊文献

英文题名：Developing two-dimensional solid superacids with enhanced mass transport, extremely high acid strength and superior catalytic performance

作者：Liu, Fujian[1,2];Yi, Xianfeng[3];Liu, Zhiqiang[3,4];Chen, Wei[3,4,5];Qi, Chen-Ze[1];Song, Yu-Fei[5];Zheng, Anmin[3]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Key Lab Alternat Technol Fine Chem Proc Zhejiang, Shaoxing 312000, Peoples R China;[2]Fuzhou Univ, Sch Chem Engn, NERC CFC, Fuzhou 350002, Peoples R China;[3]Chinese Acad Sci, Wuhan Ctr Magnet Resonance, Key Lab Magnet Resonance Biol Syst,Wuhan Inst Phy, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China;[4]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[5]Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

年份：2019

卷号：10

期号：23

起止页码：5875

外文期刊名：CHEMICAL SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000471133800019)、、EI(收录号：20192507060136)、Scopus(收录号：2-s2.0-85067259400)、WOS

基金：We acknowledge the financial support from the National Natural Science Foundation of China (grant no. 21573150, 21203122, 21522310, 21473244 and 91645112), the Natural Science Foundation of Zhejiang Province (LY15B030002), the Natural Science Foundation of Hubei Province (2018CFA009), the Key Research Program of Frontier Sciences, CAS (No. QYZDB-SSW-SLH026) and the Program for Qishan Scholar of Fuzhou University (GXRC-18043). We thank Prof. Yao Lin at the University of Connecticut for his helpful suggestions and discussions.

语种：英文

外文关键词：Bioconversion - Chlorine compounds - Clay minerals - Mass transfer - Nuclear magnetic resonance spectroscopy - Pore size

外文摘要：Solid acids have been widely used as heterogeneous catalysts in developing green and sustainable chemistry. However, it remains a challenge to improve the mass transport properties and acid strength of solid acids simultaneously. Herein, we report a class of two dimensional (2D) layered hybrid solid acids with outstanding mass transfer and extremely high acid strength by incorporating sulfonated polymers in-between montmorillonite layers. The 2D layered structure and broad distribution of pore sizes allow for highly efficient mass transport of substrate molecules into and out of the solid acids. The acid strength of these solid acids was found to be stronger than that of 100% H2SO4, H3PW12O40 and any other reported solid acids to date, as determined by 1H and 31P solid-state NMR. These 2D solid acids show extraordinary catalytic performance in biomass conversion to fuels, superior to that of H3PW12O40, HCl and H2SO4. Theoretical calculations and control experiments reveal that H-bond based interactions between the polymer and montmorillonite facilitate the unusually high acid strengths found in these samples.