钴次卟啉衍生物催化空气氧化环己烷研究
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Study on Cobalt–deuteroporphyrin derivatives’ activity in the oxidation of cyclohexane with air
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    摘要:

    摘要:用合成的4种钴次卟啉化合物作催化剂催,在未加入辅助还原剂和其它溶剂下催化空气氧化环己烷。温度150℃,压强0.80 Mpa,催化剂:底物≈1∶4.63×105(mol/mol)时,钴次卟啉化合物表现出良好的催化性能。四种钴次卟啉催化剂催化的底物转化率在4 h内都达到了14%以上,目标产物酮醇的选择性82%以上。其中钴3,8-二硝基次卟啉二甲酯催化活性最好:它催化的环己烷转化率在3.5 h升高到了19.3%,环己烷氧化目标产物酮醇的选择性为82.30%,催化剂转化数达8.86×104。

    Abstract:

    Abstract: Four cobalt–deuteroporphyrins were synthesized and used as catalysts for cyclohexane oxidation with air in the absence of additives and solvents. The four kinds of cobalt–deuteroporphyrins show good catalytic performance when temperature was 150 ℃, Catalyst: substrate ≈ 1:4.63 × 105 (mol / mol) and pressure was 0.80 Mpa. Substrate which used four kinds of cobalt–deuteroporphyrins as catalysts, its conversion rate within 4 h had reached more than 14% and the target product alcohol and ketone were formed over 82% selectivity. The catalytic activity of cobalt-3,8-dinitro deuteroporphyrin dimethyl ester was superior to another three kinds of deuteroporphyrins. The alcohol and ketone were formed to 82.30% selectivity at a cyclohexane conversion of 19.34% under the optimum conditions, and turnover number reached to 8.86×104.

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汤莹.钴次卟啉衍生物催化空气氧化环己烷研究[J].精细化工,2010,27(5):

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  • 收稿日期:2010-01-21
  • 最后修改日期:2010-01-31
  • 录用日期:2010-02-04
  • 在线发布日期: 2010-04-12
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