高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (9): 1530.

• 论文 • 上一篇    下一篇

含铜过渡金属水滑石类化合物对苯酚过氧化氢羟化的催化作用

朱凯征, 刘持标, 叶兴凯, 吴越   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1996-07-30 出版日期:1997-09-24 发布日期:1997-09-24
  • 通讯作者: 吴越
  • 作者简介:朱凯征, 男, 25岁, 硕士研究生
  • 基金资助:

    国家自然科学基金

Catalysis of Copper-containing Transition Metal Hydrotalcitelike Compounds in the Phenol Hydroxylation with Hydrogen Peroxide

ZHU Kai-Zheng, LIU Chi-Biao, YE Xing-Kai, WU Yue   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1996-07-30 Online:1997-09-24 Published:1997-09-24

摘要: 合成了一系列二元、三元过渡金属水滑石类化合物, 并经XRD、IR进行了表征.苯酚过氧化氢羟化结果表明, 含铜水滑石类化合物对该反应有较高的催化活性, 并初步提出了反应机理.

关键词: 水滑石, 过渡金属, 苯酚羟化, 过氧化氢, 催化作用

Abstract: Hydrotalcite-like compounds containing carbonate ion as the interlayer anion wereprepared by coprecipitation under low supersaturation condition by mixing an aqueous solu-tion of metal nitrates with an aqueous solutions of NaOHand Na2CO3 at room temperature,maintaining pH =8-10 with vigorous stirring- Following the mixing, the resulting heavyslurry was aged at 353 Kfor 18 h with vigorous stirring, The precipitate was then filtered,washed several times with hot distilled water and dried in air at 353 Kovernight. In thisway, CuM1 AlCO3-HTLcs and M1 AlCO3-HTLcs were synthesized and characterized bymeans of XRDand lR. The catalysis of the above mentioned HTLcs were investigated in thephenol hydroxylatlon with H2O2. The results indicated that all of the copper-containingHTLcs had a higher catalytic activity in the reaction. However, those catalysts that did notcontaln copper had no catalytlc actlvlty in this reaction- This means that copper was the ac-tive center in the phenol hydroxylation. Meanwhile, the mechanism was also proposed,which could be used to explain the main reason for higher activity for CuCuAlCO3-HTLcs inthe phenol hydroxylation and the effect of Mg2+, Zn2+, Co2+, Ni2+ on activlty of CuM1 Al-CO3-HTLcs.

Key words: Hydrotalcite, Transition metal, Phenol hydroxylation, Hydrogen peroxide, Catalysis

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