Citation: CAO Ping, YANG Xian-Gui, XIN Yang, WANG Gong-Ying. Mo-Ti Composite Oxide Catalyst for Transesterification of Dimethyl Carbonate and Phenyl Acetate to Diphenyl Carbonate[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(4): 747-752. doi: 10.3969/j.issn.1001-4861.2013.00.047 shu

Mo-Ti Composite Oxide Catalyst for Transesterification of Dimethyl Carbonate and Phenyl Acetate to Diphenyl Carbonate

CAO Ping ^1,2 ,
YANG Xian-Gui ^1,3 ,
XIN Yang ^1,3 ,
WANG Gong-Ying ^1,3

1.
1 Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China;

Received Date: 28 June 2012
Available Online: 13 August 2012
Fund Project: 国家“十一五”科技支撑计划(2006BAE02B03) (2006BAE02B03)江苏省常州市工业科技攻关计划(CE2008091) (CE2008091)重庆市教育委员会科学技术研究项目 (KJ110815) (KJ110815)重庆理工大学科研启动基金(2010ZD29)资助项目。 (2010ZD29)

The Mo-Ti composite oxide catalyst was prepared by sol-gel method and used for the transesterification of dimethyl carbonate (DMC) and phenyl acetate (PA) to diphenyl carbonate (DPC). The effect of the molar ratio of Mo/Ti and reaction conditions on the catalytic performance was investigated. The catalyst with a Mo/Ti molar ratio of 2.5 shows the highest activity. When the reaction is carried out at 180℃, with a molar ratio of PA to DMC of 2:1, the reaction time of 4 h, a catalyst amount of 0.08 (weight ratio to PA), the conversion of DMC is 74.0%, and the selectivity of DPC and MPC is 45.5% and 51.0%, respectively. According to the surface and X-ray diffraction results, lager specific areas result in improved catalytic performance by the addition of TiO₂. The Mo-Ti composite oxide is composed of α-MoO₃ and highly dispersed amorphous titania and/or new crystal phase of Mo-Ti composite oxide.
- molybdenum;titanium;composite oxide;dimethyl carbonate;phenyl acetate;diphenyl carbonate
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