TY - JOUR
T1 - Facile synthesis of mesoporous Cu 2O microspheres with improved catalytic property for dimethyldichlorosilane synthesis
AU - Zhang, Zailei
AU - Che, Hongwei
AU - Wang, Yingli
AU - Gao, Jiajian
AU - Zhao, Lirun
AU - She, Xilin
AU - Sun, Jin
AU - Gunawan, Poernomo
AU - Zhong, Ziyi
AU - Su, Fabing
PY - 2012/1/25
Y1 - 2012/1/25
N2 - Mesoporous Cu 2O (MP-Cu 2O) microspheres were prepared via a facile template-free hydrothermal synthesis in the open system, in which copper acetate was used as the copper precursor and glucose as a reducing agent. The synthesis conditions and catalytic property of MP-Cu 2O for dimethyldichlorosilane synthesis via the Rochow reaction were investigated, and the formation mechanism of MP-Cu 2O microspheres was proposed. The samples were characterized by nitrogen adsorption, X-ray diffraction, temperature-programmed reduction, thermogravimetric analysis, transmission electron microscopy, and scanning electron microscopy. It was found that the synthesis conditions such as reaction temperature, time, and reactant amount added have a significant effect on the morphology and pore structure of MP-Cu 2O microspheres, and MP-Cu 2O microspheres were formed through assembly of Cu 2O nanoparticles. MP-Cu 2O microspheres with a surface area of 65.8 m 2/g, pore size of 26.7 nm, and a diameter of 400-700 nm were obtained under the optimized condition. As compared to the nonporous Cu 2O microspheres, MP-Cu 2O microspheres showed a better catalytic performance in dimethyldichlorosilane synthesis due to their developed pore structure and high surface area, which allow larger contact interface among the reaction gas, solid catalyst, and the solid reactant, together with enhanced mass transport. The work would be helpful for developing novel structured copper catalysts for organosilane synthesis and for understanding the catalytic mechanism.
AB - Mesoporous Cu 2O (MP-Cu 2O) microspheres were prepared via a facile template-free hydrothermal synthesis in the open system, in which copper acetate was used as the copper precursor and glucose as a reducing agent. The synthesis conditions and catalytic property of MP-Cu 2O for dimethyldichlorosilane synthesis via the Rochow reaction were investigated, and the formation mechanism of MP-Cu 2O microspheres was proposed. The samples were characterized by nitrogen adsorption, X-ray diffraction, temperature-programmed reduction, thermogravimetric analysis, transmission electron microscopy, and scanning electron microscopy. It was found that the synthesis conditions such as reaction temperature, time, and reactant amount added have a significant effect on the morphology and pore structure of MP-Cu 2O microspheres, and MP-Cu 2O microspheres were formed through assembly of Cu 2O nanoparticles. MP-Cu 2O microspheres with a surface area of 65.8 m 2/g, pore size of 26.7 nm, and a diameter of 400-700 nm were obtained under the optimized condition. As compared to the nonporous Cu 2O microspheres, MP-Cu 2O microspheres showed a better catalytic performance in dimethyldichlorosilane synthesis due to their developed pore structure and high surface area, which allow larger contact interface among the reaction gas, solid catalyst, and the solid reactant, together with enhanced mass transport. The work would be helpful for developing novel structured copper catalysts for organosilane synthesis and for understanding the catalytic mechanism.
UR - http://www.scopus.com/inward/record.url?scp=84863012103&partnerID=8YFLogxK
U2 - 10.1021/ie2020747
DO - 10.1021/ie2020747
M3 - 文章
AN - SCOPUS:84863012103
SN - 0888-5885
VL - 51
SP - 1264
EP - 1274
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 3
ER -