New palladium catalysts prepared by glow discharge plasma for the selective hydrogenation of acetylene
New palladium catalysts prepared by glow discharge plasma for the selective hydrogenation of acetylene
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DOI：
10.1016/j.cattod.2003.11.027
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发表时间：
2004-02
期刊：
影响因子：
5.3
通讯作者：
M. H. Chen;W. Chu;X. Dai;Xiaoqing Zhang
中科院分区：
文献类型：
--
作者：
M. H. Chen;W. Chu;X. Dai;Xiaoqing Zhang
采用等离子体法制备了新型Pd/α-Al 2 O3催化剂，并将其用于乙炔选择加氢反应。考察了制备方法、活性组分Pd含量、助催化剂及反应温度等因素对反应的影响。结果表明，辉光放电等离子体制备的催化剂的转化率和选择性均上级传统催化剂。在50°C下，等离子体制备的样品（0.15wt.%）的乙炔转化率为100%，C2 H4选择性为71.3而等离子体制备的催化剂在超过20 h的长时间测试中稳定。
For the selective hydrogenation of acetylene, the novel Pd/α-Al2O3catalysts prepared by plasma method were investigated. The influence of the preparation method, content of Pd active component, catalyst promoter and reaction temperature has been investigated. It was found that the conversion and selectivity of the catalysts prepared by glow discharge plasma were superior to those obtained from the conventional catalysts. The acetylene conversion of 100% and the selectivity of 71.3% in C2H4were obtained at 50°C over the plasma-prepared sample (0.15wt.% Pd), while the plasma-prepared catalyst was stable during the long-time test for more than 20h.