Some features of acetylene and 1,3-butadiene hydrogenation on Ag/SiO2 and Ag/TiO2 catalysts
Some features of acetylene and 1,3-butadiene hydrogenation on Ag/SiO2 and Ag/TiO2 catalysts
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DOI：
10.1016/s0926-860x(02)00555-0
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发表时间：
2003-04
影响因子：
5.5
通讯作者：
A. Sárkány;Z. Révay
中科院分区：
文献类型：
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作者：
A. Sárkány;Z. Révay
研究了乙烯、丙烯（Pr）、1-丁烯（1B）、乙炔和1，3-丁二烯（BD）在1.74wt.% Ag/SiO2和0.67wt.% Ag/TiO_2催化剂在333 ~ 423 K温度范围内的催化活性。通过AgNO 3水溶液润湿SiO2和TiO 2吸附银离子制备了催化剂。在脉冲微反系统中，催化剂经O2和H2处理后，在313- 323 K温度范围内进行乙烯加氢反应。在323- 383 K温度范围内，对乙炔、丙烯、1，3-丁二烯和1-丁烯的加氢反应进行了研究。乙炔加氢主要生成乙烯，同时只生成有限的低聚物（C4+）。1，3-丁二烯的加氢主要产生1-丁烯和2-丁烯中的顺/反比在Ag/SiO2上观察到2和5之间。在丁二烯和丙烯混合物的竞争加氢中，1，3-丁二烯不能完全抑制丙烯的加氢。
Hydrogenation of ethylene, propene (Pr), 1-butene (1B), acetylene and 1,3-butadiene (BD) was investigated over 1.74wt.% Ag/SiO2and 0.67wt.% Ag/TiO2catalysts in temperature range between 333 and 423K. The catalysts were prepared by wetting SiO2with aqueous solution of AgNO3and by adsorption of silver ions on TiO2. After O2and H2treatments the catalysts hydrogenated ethene from about 313–323K in a pulse microreactor system. Hydrogenation of acetylene, propene, 1,3-butadiene and 1-butene was tested in a recirculation batch reactor at 323–383K. Acetylene hydrogenation gave mainly ethene accompanied with only limited formation of oligomers (C4+). Hydrogenation of 1,3-butadiene yielded mostly 1-butene and the cis/trans ratio in the 2-butenes was observed between 2 and 5 on Ag/SiO2. In competitive hydrogenation of butadiene and propene mixtures 1,3-butadiene could not entirely suppress hydrogenation of propene.