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2005•Journal of Zhejiang University of TechnologyRequires access

Study on catalytic synthesis of di-n-octyl phthalate by heteropolyacid as a catalyst

Wei Yan

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Abstract

Di-n-octyl phthamate,a good plasticizer,has been synthesized by using n-octanol and phthalic anhydride as starting materials in the presence of heteropolyacid(HPA) catalyst.The optimizing test of the operation conditions was also established.The optimum reaction conditions,under which the yield of di-n-octyl phthalate is about 98.02%~98.80%,are as follows∶molar ratio∶phthalic anhydride∶alcohol=1.0∶2.3,weight of phospho-tungtic acid catalyst(HPW): 1.5 g/1 mol phthalic anhydride,reaction time: 1.5 h,toluene as water-taken agent.

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What this paper is about

Di-n-octyl phthamate,a good plasticizer,has been synthesized by using n-octanol and phthalic anhydride as starting materials in the presence of heteropolyacid(HPA) catalyst.The optimizing test of the operation conditions was also established.The optimum reaction conditions,under which the yield of di-n-octyl phthalate is about 98.02%~98.80%,are as follows∶molar ratio∶phthalic anhydride∶alcohol=1.0∶2.3,weight of phospho-tungtic acid catalyst(HPW): 1.5 g/1 mol phthalic anhydride,reaction time: 1.5 h,toluene as water-taken agent.

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Available abstract

Di-n-octyl phthamate,a good plasticizer,has been synthesized by using n-octanol and phthalic anhydride as starting materials in the presence of heteropolyacid(HPA) catalyst.The optimizing test of the operation conditions was also established.The optimum reaction conditions,under which the yield of di-n-octyl phthalate is about 98.02%~98.80%,are as follows∶molar ratio∶phthalic anhydride∶alcohol=1.0∶2.3,weight of phospho-tungtic acid catalyst(HPW): 1.5 g/1 mol phthalic anhydride,reaction time: 1.5 h,toluene as water-taken agent.

Key concepts: Phthalic anhydride, Catalysis, Plasticizer, Molar ratio, Yield (engineering), Phthalic acid, Toluene, Chemistry

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