TY - JOUR
T1 - Active solid acid catalysts prepared by sulfonation of carbonization-controlled mesoporous carbon materials
AU - Xing, Rong
AU - Liu, Yueming
AU - Wang, Yong
AU - Chen, Li
AU - Wu, Haihong
AU - Jiang, Yongwen
AU - He, Mingyuan
AU - Wu, Peng
PY - 2007/9/15
Y1 - 2007/9/15
N2 - A novel sulfonic acid group-functionalized mesoporous carbon was prepared through vapour-phase transfer sulfonation of CMK-3 type mesoporous carbon with the controllable carbonization degree. The method of vapour-phase sulfonation, that is, through contacting the sample powders with the vapor from fuming sulfuric acid in a closed autoclave, proved to be more effective than both the direct dipping of the carbon in concentrated or fuming H2SO4 and the treatment with pure SO3 gas. The influence of carbonization temperature on the sulfonation was investigated, suggesting an optimum temperature of 823 K. The SO3H group-functionalized mesoporous carbon, CMK-3-SO3H, was characterized by means of XRD, SEM, TEM, N2 adsorption-desorption, 13C NMR, FTIR and elemental analysis, which indicated that it had uniform mesopores together with an extremely high surface area, and also contained an amount of acid sites as high as 1.3 mmol g-1. CMK-3-SO3H catalyzed efficiently the liquid-phase Beckmann rearrangement of cyclohexanone oxime and condensation reactions involving bulky aromatic aldehydes.
AB - A novel sulfonic acid group-functionalized mesoporous carbon was prepared through vapour-phase transfer sulfonation of CMK-3 type mesoporous carbon with the controllable carbonization degree. The method of vapour-phase sulfonation, that is, through contacting the sample powders with the vapor from fuming sulfuric acid in a closed autoclave, proved to be more effective than both the direct dipping of the carbon in concentrated or fuming H2SO4 and the treatment with pure SO3 gas. The influence of carbonization temperature on the sulfonation was investigated, suggesting an optimum temperature of 823 K. The SO3H group-functionalized mesoporous carbon, CMK-3-SO3H, was characterized by means of XRD, SEM, TEM, N2 adsorption-desorption, 13C NMR, FTIR and elemental analysis, which indicated that it had uniform mesopores together with an extremely high surface area, and also contained an amount of acid sites as high as 1.3 mmol g-1. CMK-3-SO3H catalyzed efficiently the liquid-phase Beckmann rearrangement of cyclohexanone oxime and condensation reactions involving bulky aromatic aldehydes.
KW - CMK-3
KW - Mesoporous carbon
KW - Solid acid
KW - Sulfonation
KW - Sulfonic acid group
UR - https://www.scopus.com/pages/publications/34548382733
U2 - 10.1016/j.micromeso.2007.06.043
DO - 10.1016/j.micromeso.2007.06.043
M3 - 文章
AN - SCOPUS:34548382733
SN - 1387-1811
VL - 105
SP - 41
EP - 48
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 1-2
ER -