Ammoxidation of ethane to acetonitrile was studied over a variety of metal ion exchanged zeolite catalysts.We discovered that ethane can be efficiently converted to acetonitrile over some Co-zeolite catalysts.The type of zeolite is very important.In this regard,ZSM-5,beta and NU-87 are superior to others.Among various transition metal cations. Co~2+ is most active for acetonitrile formation.in the absence of O_2,no reaction occurs.With a specially designed temperature programmed experiment (reaction between the adsorbed NH_3 and gaseous C_2H_4/O_2/He mixture),we observed C_2H_5NH_2 as a reactive intermediate,and this intermediate was demonstrated to be readily converted to C_2H_3N under the ammoxidation reaction conditions.A detailed pathway is offered,whereby C_2H_4 is thought to add on an adsorbed NH_3 forming an adsorbed ethylamine,which is subsequently dehydrogenated to form C_2H_3N.
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机译：在各种金属离子交换沸石催化剂上研究了乙烷对乙腈的氨氧化。我们发现乙烷可以在一些共沸石催化剂上有效地转化为乙腈。沸石的类型非常重要。在这方面，ZSM-5， Beta和Nu-87优于其他人。among各种过渡金属阳离子。 CO〜2 +对于乙腈形成最活跃。在没有O_2的情况下，没有发生反应。在特殊设计的温度编程实验中（吸附的NH_3和气态C_2H_4 / O_2 / O_2 / O_2 / O_2 / HE / O _2混合物之间的反应），我们认为C_2H_5NH_2作为反应性中间体，并且该中间体被证明在氨氧化反应条件下容易地转化为C_2H_3N。提供了详细的途径，其中C_2H_4被认为加入形成吸附的乙胺的吸附NH_3，随后脱氢以形成C_2H_3N。
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