화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.1, 100-107, January, 2014
DOI10.1016/j.jiec.2013.04.020  Export Citation
Production of isophthalic acid from m-xylene oxidation under the catalysis of the H3PW12O40/carbon and cobalt catalytic system
Xiang-li Long†, Zhi-hao Wang, San-qiang Wu, Shi-ming Wu, Hai-feng Lv, and Wei-kang Yuan
  • State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
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Isophthalic acid (IPA) is commercially produced from m-xylene oxidation with the catalysis of the homogeneous Co-Mn-Br catalyst system. In this study, a catalytic system consisting of HPW/C and Co(II) has been put forward to oxidize m-xylene (MX) to IPA. The experimental results prove that the HPW/C and Co catalytic system is capable of catalyzing the oxidation of MX to IPA, which can obtain a higher MX conversion and IPA concentration than the homogeneous H3PW12O40/Co(OAc)2/Mn(OAc)2 catalytic system. The heterogeneous catalytic system is also advantageous over the homogeneous catalytic system in the inhibition of the oxidation of acetic acid and IPA. The optimal amount of phosphotungstic acid supported on carbon is 7.5% (wt). The best dosage of HPW/C is 15 g l^(-1). The optimum Co(II) concentration in the catalytic system for IPA production is 0.064% (wt). The best HPW/C activation temperature is 220 ℃.
Keywords:Phosphotungstic acid;Catalyst support;Catalysis;Slurries;Isophthalic acid
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