Selective hydrogenation of 1,3-butadiene over Pd and Pd–Sn catalysts supported on different phases of alumina
Selective hydrogenation of 1,3-butadiene over Pd and Pd–Sn catalysts supported on different phases of alumina
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DOI：
10.1016/j.cattod.2010.10.013
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发表时间：
2011-04
期刊：
影响因子：
5.3
通讯作者：
Kanda Pattamakomsan;E. Ehret;F. Morfin;P. Gélin;Y. Jugnet;S. Prakash;J. Bertolini;J. Panpranot
中科院分区：
文献类型：
--
作者：
Kanda Pattamakomsan;E. Ehret;F. Morfin;P. Gélin;Y. Jugnet;S. Prakash;J. Bertolini;J. Panpranot
研究了混合相 θ/α-(MA) 和纯 α-氧化铝 (AA) 负载的 Pd 和 Pd-Sn 的气相选择性加氢反应。通过 XRD、XPS、TEM 和吸附 CO 的 FTIR 光谱对催化剂进行了表征。与混合相氧化铝载体上的 Pd-Sn 相比，1,3-丁二烯选择性加氢的活性和选择性显着提高，其中丁烷的形成和 1-丁烯的异构化受到抑制。然而，由于金属分散性较低，Pd-Sn/AA 的活性比 Pd-Sn/MA 低得多。
The gas phase selective hydrogenation of 1,3-butadiene was studied over Pd and Pd–Sn supported on mixed phase θ/α-(MA) and pure α-alumina (AA). The catalysts were characterized by XRD, XPS, TEM, and FTIR spectroscopy of adsorbed CO. A remarkable improvement in terms of activity and selectivity in the selective hydrogenation of 1,3-butadiene was achieved over Pd–Sn on the mixed phase alumina support in which butane formation and isomerization of 1-butene were suppressed. Nevertheless, Pd–Sn/AA showed much lower activity than Pd–Sn/MA due to lower metal dispersion.