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首页> 外文期刊>Iranian journal of chemistry & chemical engineering >Trimetallic Au-Cu-La/AC for Acetylene Hydrochlorination in a Multi-Tubular Fixed Bed Reactor
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Trimetallic Au-Cu-La/AC for Acetylene Hydrochlorination in a Multi-Tubular Fixed Bed Reactor

机译：用于多管固定床反应器中的乙炔氢氯化物的Trimetallic Au-Cu-La / Ac

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The metal chloride of LaCl3 was chosen to modify the Au-Cu/AC to decrease the noble metal of gold and enhance the catalytic performances. Then a mercury-free catalyst of Au-Cu-La/AC was prepared by the impregnation method, and the fresh Au-Cu-La/AC and Au-Cu/AC catalysts were also characterized in comparison. The catalytic performances of mercury-free catalysts for acetylene hydrochlorination were carried out for 3500 hours in a multi-tubular fixed bed reactor. The additives of La can make the active species dispersed well and retard the aggregation of particles. And the acetylene conversion rate remained stable over 98.5% with the fluctuations, less than 1%, and the selectivity of vinyl chloride maintained the stability of 99% or higher, which indicated that the mercury-free catalyst has excellent catalytic performances for acetylene hydrochlorination.
机译：选择LacL3的金属氯化物以改变Au-Cu / Ac以降低金的贵金属，并增强催化性能。然后通过浸渍方法制备无菌的无汞催化剂，并且还表征了新鲜的Au-Cu-La / Ac和Au-Cu / Ac催化剂。在多管固定床反应器中，在多管固定床反应器中进行35 00小时的乙炔氢氯化汞催化剂的催化性能。 La的添加剂可以使活性物质分散良好并延缓颗粒的聚集。乙炔转化率超过98.5％，波动率稳定，低于1％，氯乙烯的选择性保持99％或更高的稳定性，表明汞催化剂具有优异的乙炔氢氯化物的催化性能。

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