Highly dispersed Rhodium/Polyphosphine metal catalysts: catalytic activity for ethylene hydrogenation
Highly dispersed Rhodium/Polyphosphine metal catalysts: catalytic activity for ethylene hydrogenation
复制标题
高分散铑/多膦金属催化剂：乙烯加氢催化活性
DOI：
10.1016/0021-9517(83)90127-6
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发表时间：
1983
影响因子：
7.3
通讯作者：
S. Enzo
中科院分区：
文献类型：
--
作者：
F. Pinna;M. Gonizzi;G. Strukul;G. Cocco;S. Enzo
以聚膦为载体的铑金属催化剂用于乙烯加氢反应。在流动反应器中在395 K和1 atm下研究了该反应。根据磷含量的不同，转换数在5.8 × 10− 3到145 × 10−3（分子/秒表面原子）之间。烯烃和氢气的反应级数分别约为0.0和1.0。报道了各种样品的比活度N和磷含量之间的相关性，并表明存在着控制催化活性的强磷铑相互作用。这是证实了化学吸附测量和活化能数据。典型的活化能值为5千卡/摩尔的磷化样品和12千卡/摩尔的非磷化的。
Rhodium metal catalysts dispersed on polyphosphine supports were employed in the hydrogenation of ethylene. The reaction was studied in a flow reactor at 395 K and 1 atm. Turnover numbers ranged between 5.8 × 10−3and 145 × 10−3(molecules/sec surface atom) depending on phosphorus content. Reaction orders for olefin and hydrogen were about 0.0 and 1.0, respectively.Correlations between specific activityNand phosphorus content for various samples are reported and suggest the existence of a strong phosphorus rhodium interaction which controls the catalytic activity. This was confirmed by chemisorption measurements and activation energy data. Typical activation energy values were 5 kcal/mol for phosphinated samples and 12 kcal/mol for nonphosphinated ones.