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Synthesis of Adipic Acid Catalyzed by H_3PW_(12)O_(40)

Hua Li

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Abstract

Using w(H2O2)=30% aqueous hydrogen peroxide as oxidant,oxalic acid (H2C2O4) as cocatalyst,adipic acid was synthesized with cyclohexene as raw material and phosphotungstic acid (H3PW12O40) as catalyst.When n(cyclohexene)∶n(H3PW12O40)∶n(H2C2O4)∶n(H2O2)=100∶1∶1∶538,reaction temperature was 92 ℃ and reaction time 6 h,the yield of adipic acid was up to 701%.Influences of the amount of H3PW12O40,cyclohexene and hydrogen peroxide,reaction time and reaction temperature were also discussed.

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What this paper is about

Using w(H2O2)=30% aqueous hydrogen peroxide as oxidant,oxalic acid (H2C2O4) as cocatalyst,adipic acid was synthesized with cyclohexene as raw material and phosphotungstic acid (H3PW12O40) as catalyst.When n(cyclohexene)∶n(H3PW12O40)∶n(H2C2O4)∶n(H2O2)=100∶1∶1∶538,reaction temperature was 92 ℃ and reaction time 6 h,the yield of adipic acid was up to 701%.Influences of the amount of H3PW12O40,cyclohexene and hydrogen peroxide,reaction time and reaction temperature were also discussed.

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Available abstract

Using w(H2O2)=30% aqueous hydrogen peroxide as oxidant,oxalic acid (H2C2O4) as cocatalyst,adipic acid was synthesized with cyclohexene as raw material and phosphotungstic acid (H3PW12O40) as catalyst.When n(cyclohexene)∶n(H3PW12O40)∶n(H2C2O4)∶n(H2O2)=100∶1∶1∶538,reaction temperature was 92 ℃ and reaction time 6 h,the yield of adipic acid was up to 701%.Influences of the amount of H3PW12O40,cyclohexene and hydrogen peroxide,reaction time and reaction temperature were also discussed.

Key concepts: Cyclohexene, Adipic acid, Phosphotungstic acid, Hydrogen peroxide, Catalysis, Oxalic acid, Chemistry, Yield (engineering)

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