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Synthesis of n-amyl chloroacetate catalyzed by activated carbon supported phosphotungstic acid

Pei Huixia

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Abstract

Phosphotungstic acids(PW12) supported on activated carbon(AC) were prepared,characterized by XRD,IR and N2 adsorption,and used as the catalyst for synthesis of n-amyl chloroacetate.Influence of alcohol-to-acid mole ratio,reaction temperature,catalyst dosage and reaction time on the esterification was investigated.The experimental results indicated that PW12 /AC had good catalytic activity.The proper reaction condition was as follows: PW12 loadings 18%,alcohol-to-acid mole ratio 1.3∶1,percentage of the catalyst in reactants 3.0%,reaction time(3-5) h.Esterification rate of up to 98% was obtained.

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What this paper is about

Phosphotungstic acids(PW12) supported on activated carbon(AC) were prepared,characterized by XRD,IR and N2 adsorption,and used as the catalyst for synthesis of n-amyl chloroacetate.Influence of alcohol-to-acid mole ratio,reaction temperature,catalyst dosage and reaction time on the esterification was investigated.The experimental results indicated that PW12 /AC had good catalytic activity.The proper reaction condition was as follows: PW12 loadings 18%,alcohol-to-acid mole ratio 1.3∶1,percentage of the catalyst in reactants 3.0%,reaction time(3-5) h.Esterification rate of up to 98% was obtained.

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Available abstract

Phosphotungstic acids(PW12) supported on activated carbon(AC) were prepared,characterized by XRD,IR and N2 adsorption,and used as the catalyst for synthesis of n-amyl chloroacetate.Influence of alcohol-to-acid mole ratio,reaction temperature,catalyst dosage and reaction time on the esterification was investigated.The experimental results indicated that PW12 /AC had good catalytic activity.The proper reaction condition was as follows: PW12 loadings 18%,alcohol-to-acid mole ratio 1.3∶1,percentage of the catalyst in reactants 3.0%,reaction time(3-5) h.Esterification rate of up to 98% was obtained.

Key concepts: Phosphotungstic acid, Catalysis, Chemistry, Alcohol, Activated carbon, Active carbon, Adsorption, Nuclear chemistry

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