文献类型：期刊文献

英文题名：A study on the m-xylene oxidation to isophthalic acid under the catalysis of bromine-free homogeneous catalytic system

作者：Lv, Hai-feng[1];Wu, San-qiang[1];Liu, Nian[1];Long, Xiang-li[1];Yuan, Wei-kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：172

期号：2-3

起止页码：1045

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20113414256134);WOS:【SCI-EXPANDED(收录号:WOS:000295387100054)】；

语种：英文

外文关键词：Phosphotungstic acid; m-Xylene; Catalytic oxidation; Isophthalic acid; Kinetics

摘要：Isophthalic acid (IPA) is usually produced by the Co-Mn-Br catalyst system. In this study, a bromine-free catalyst system consisting of H-3 PW12O40/CO(OAc)(2)/Mn(OAc)(2) has been put forward to oxidizing m-xylene (MX) to IPA. The experimental results proves that the homogeneous H3PW12O40/Co(OAc)(2)/Mn(OAc)(2) catalytic system is able to catalyze the oxidation of MX to IPA. The optimal phosphotungstic acid concentration is 0.52 wt%. The optimum Co(II) concentration for IPA production is between 0.044% and 0.088 wt%. The best Mn/Co ratio is found to be 2.46. Temperature has a strong effect on the reaction rates. Oxygen partial pressure influences on the IPA yield greatly. The kinetic parameters such as activation energies, reaction orders have been estimated. (C) 2011 Elsevier B.V. All rights reserved.