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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Effect of Phosphorus Ligand on Cu-Based Catalysts for Acetylene Hydrochlorination
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Effect of Phosphorus Ligand on Cu-Based Catalysts for Acetylene Hydrochlorination

机译：磷配体对乙炔氢氯化物催化剂的影响

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摘要

Because of the toxicity of traditional mercury catalysts, nonmercuric catalysts for acetylene hydrochlorination have been receiving great concern. In this study, a novel environmentally friendly Cu-1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP)/activated carbon (AC) catalyst with wt % Cu loading was successfully synthesized by a simple method. Then, the prepared catalyst was used for an acetylene hydrochlorination reaction. HEDP was used because it is nontoxic and possesses outstanding coordination ability for metal ions. The catalyst showed 25% higher catalytic activity compared to pure Cu/AC at 180 degrees C and an acetylene gas hourly space velocity of 90 h(-1) X-ray photoelectron spectroscopy, H-2 temperature-programmed reduction analyses proved that the addition of HEDP ligand can relatively inhibit the reduction of Cu2+ during the preparation of catalyst and reaction processes. In addition, analyses using TEM indicated that the addition of HEDP ligand can improve the dispersion of active components on the AC support.
机译：由于传统汞催化剂的毒性，用于乙炔拓扑氯化丙丙烷的非脆性催化剂已经得到了极大的关注。在本研究中，通过简单的方法成功地合成了一种新的环保型Cu-1-羟乙烯-1,1-二膦酸（HEDP）/活性炭（AC）催化剂。然后，制备的催化剂用于乙炔氢氯化物反应。使用HEDP是因为它是无毒的并且具有突出的金属离子的协调能力。与180℃的纯Cu / Ac相比，催化剂与纯Cu / Ac相比，催化活性较高25％（-1）X射线光电子能量，H-2温度编程的减少分析证明了HEDP配体可以相对抑制在制备催化剂和反应过程期间Cu2 +的减少。另外，使用TEM的分析表明加入HEDP配体可以改善有源组分对AC载体的分散。

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