TY - JOUR
T1 - Liquid-phase catalytic oxidation of p-chlorotoluene to p-chlorobenzaldehyde over manganese oxide octahedral molecular sieves
AU - Deng, Yi Qiang
AU - Zhang, Teng
AU - Au, Chak Tong
AU - Yin, Shuang Feng
N1 - Funding Information:
The project was financially supported by NSFC (Grant Nos. 21273067 , U1162109 , 20873038 ), the program for New Century Excellent Talents in Universities ( NCET-10-0371 ), Program for Changjiang Scholars and Innovative Research Team in University ( IRT1238 ), Hunan Provincial Natural Science Foundation of China ( 10JJ1003 ), and the Fundamental Research Funds for Central Universities . C.T. Au thanks the Hunan University for an adjunct professorship.
PY - 2013/10/2
Y1 - 2013/10/2
N2 - Manganese oxide octahedral molecular sieves (OMS-2) show much higher catalytic activities in the liquid-phase catalytic oxidation of p-chlorotoluene than MnO2, Mn3O4, Mn(OAc)2 as well as than some other transition metal oxides such as Co2O3, V2O5 and Fe2O3. Based on temperature-programmed desorption and thermogravimetric results, it is deduced that the catalytic activity of OMS-2 can be ascribed to the abundance and mobility of lattice oxygen. We investigated the effects of reaction temperature, reaction time, catalyst amount, and initial water amount on the reaction. Under optimal reaction conditions, p-chlorotoluene conversion and p-chlorobenzaldehyde selectivity are respectively 86.0% and 68.7%. The catalysts can be easily recovered by centrifugation, and reused. According to the results of X-ray diffraction and N2 adsorption/desorption analyses, there is no significant change in major characteristics of the catalyst after 4 cycles of reaction.
AB - Manganese oxide octahedral molecular sieves (OMS-2) show much higher catalytic activities in the liquid-phase catalytic oxidation of p-chlorotoluene than MnO2, Mn3O4, Mn(OAc)2 as well as than some other transition metal oxides such as Co2O3, V2O5 and Fe2O3. Based on temperature-programmed desorption and thermogravimetric results, it is deduced that the catalytic activity of OMS-2 can be ascribed to the abundance and mobility of lattice oxygen. We investigated the effects of reaction temperature, reaction time, catalyst amount, and initial water amount on the reaction. Under optimal reaction conditions, p-chlorotoluene conversion and p-chlorobenzaldehyde selectivity are respectively 86.0% and 68.7%. The catalysts can be easily recovered by centrifugation, and reused. According to the results of X-ray diffraction and N2 adsorption/desorption analyses, there is no significant change in major characteristics of the catalyst after 4 cycles of reaction.
KW - Catalytic oxidation
KW - Lattice oxygen
KW - Manganese oxide
KW - OMS-2
KW - p-Chlorobenzaldehyde
KW - p-Chlorotoluene
UR - http://www.scopus.com/inward/record.url?scp=84880979485&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2013.07.015
DO - 10.1016/j.apcata.2013.07.015
M3 - Journal article
AN - SCOPUS:84880979485
SN - 0926-860X
VL - 467
SP - 117
EP - 123
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -