引用本文:
王胜平, 马新宾, 郭宏利, 王保伟, 李振花, 许根慧. TS-1分子筛催化苯酚和草酸二甲酯合成草酸二苯酯[J]. 应用化学,
2002, 19(9): 832-836.
Citation: WANG Sheng-Ping, MA Xin-Bin, GUO Hong-Li, WANG Bao-Wei, LI Zhen-Hua, XU Gen-Hui. Synthesis of Diphenyl Oxalate by Transesterification of Dimethyl Oxalate with Phenol over TS-1 Catalyst[J]. Chinese Journal of Applied Chemistry, 2002, 19(9): 832-836.
Citation: WANG Sheng-Ping, MA Xin-Bin, GUO Hong-Li, WANG Bao-Wei, LI Zhen-Hua, XU Gen-Hui. Synthesis of Diphenyl Oxalate by Transesterification of Dimethyl Oxalate with Phenol over TS-1 Catalyst[J]. Chinese Journal of Applied Chemistry, 2002, 19(9): 832-836.
TS-1分子筛催化苯酚和草酸二甲酯合成草酸二苯酯
English
Synthesis of Diphenyl Oxalate by Transesterification of Dimethyl Oxalate with Phenol over TS-1 Catalyst
Abstract:
The preparation of diphenyl oxalate(DPO) by transesterification of dimethyl oxalate(DMO) with phenol over TS-1 catalyst(2.5% Ti) has been investigated as function of calcination temperature of the catalyst and reaction time. The catalysts were characterized by FTIR of absorbed pyridine and NH3-TPD. The results showed that weak Lewis acid sites were the active sites of the catalyst in the transesterification reaction. The optimum calcination temperature appeared to be 550℃ when its effect on the active sites and surface area of the catalysts were taken into consideration. At atmosphere pressure, reaction temperature 180℃, 4 h, n(PhOH): n(DMO)=5:1, 1.8 g catalyst, the following results were obtained:total selectivity of methylphenyl oxalate(MPO) and DPO was 99.3%, DMO conversion 30.0%, MPO yield 26.3% and DPO yield 3.4%.
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Key words:
- diphenyl carbonate
- / diphenyl oxalate
- / transesterification
- / TS-1
- / Lewis acid
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