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2006•Industrial CatalysisRequires access

Transesterification of DMC and EHOH over potassium titanate for synthesis of di-2-ethyl hexyl carbonate(DEHC)

Feng Xiu-li, Wang Qing-ying

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Abstract

A transesterification process for synthesis of di-2-ethyl-hexyl carbonate(DEHC) from dimethyl carbonate(DMC) and 2-ethyl-hexanol(EHOH)was studied.Several potassium salts were compared as the catalysts for the transesterification,among which K_2TiO_3 exhibited better activity and selectivity.The optimum operation conditions for K_2TiO_3 catalyst were obtained as follows: reaction temperature 140 ℃,reaction time 2 h,n(DMC)∶n(EHOH) =1∶3,catalyst loadings = 1% of mass of the feed.DMC conversion of 72.1%,selectivity to DEHC of 79.2% and DEHC yield of 57.6% were attained under the optimum condition.

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A transesterification process for synthesis of di-2-ethyl-hexyl carbonate(DEHC) from dimethyl carbonate(DMC) and 2-ethyl-hexanol(EHOH)was studied.Several potassium salts were compared as the catalysts for the transesterification,among which K_2TiO_3 exhibited better activity and selectivity.The optimum operation conditions for K_2TiO_3 catalyst were obtained as follows: reaction temperature 140 ℃,reaction time 2 h,n(DMC)∶n(EHOH) =1∶3,catalyst loadings = 1% of mass of the feed.DMC conversion of 72.1%,selectivity to DEHC of 79.2% and DEHC yield of 57.6% were attained under the optimum condition.

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Available abstract

A transesterification process for synthesis of di-2-ethyl-hexyl carbonate(DEHC) from dimethyl carbonate(DMC) and 2-ethyl-hexanol(EHOH)was studied.Several potassium salts were compared as the catalysts for the transesterification,among which K_2TiO_3 exhibited better activity and selectivity.The optimum operation conditions for K_2TiO_3 catalyst were obtained as follows: reaction temperature 140 ℃,reaction time 2 h,n(DMC)∶n(EHOH) =1∶3,catalyst loadings = 1% of mass of the feed.DMC conversion of 72.1%,selectivity to DEHC of 79.2% and DEHC yield of 57.6% were attained under the optimum condition.

Key concepts: Transesterification, Dimethyl carbonate, Catalysis, Selectivity, Chemistry, Yield (engineering), Potassium carbonate, Potassium

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Transesterification of DMC and EHOH over potassium titanate for synthesis of di-2-ethyl hexyl carbonate(DEHC) — Research Paper | ScholarLens