Ammonia synthesis by means of plasma over MgO catalyst
Ammonia synthesis by means of plasma over MgO catalyst
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DOI：
10.1007/bf00571275
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发表时间：
1986-06
影响因子：
3.6
通讯作者：
K. Sugiyama;K. Akazawa;M. Oshima;H. Miura;T. Matsuda;O. Nomura
中科院分区：
文献类型：
--
作者：
K. Sugiyama;K. Akazawa;M. Oshima;H. Miura;T. Matsuda;O. Nomura
在辉光放电等离子体中，研究了在金属或金属氧化物存在下，室温下H2-N2混合气合成氨的反应。氧化镁（MgO）和氧化钙（CaO）是具有固体碱性的氧化物，它们在氨的等离子体合成中显示出催化活性，尽管它们在工业氨合成中是无催化活性的。酸性氧化物（Al 2 O3、WO 3和SiO2-Al 2 O3）导致反应物的消耗，即，H2-N2混合气体。未分离出氨。金属催化剂比上述碱性氧化物表现出更高的活性。然而，他们有不同的活动。反应在活性材料上比在氯化钠（NaCl）或玻璃棉上或在没有任何催化剂的空白反应器中更快。
Ammonia synthesis from H2-N2mixed gas was studied at room temperature in a glow-discharge plasma in the presence of metals or metal oxides. Magnesia (MgO) and calcia (CaO), which are oxides with solid basicity, revealed catalytic activity in the plasma synthesis of ammonia, although they are catalytically inactive in industrial ammonia synthesis. The acidic oxides (Al2O3, WO3, and SiO2-Al2O3) lead to the consumption of the reactant, i.e., the H2-N2mixed gas. No ammonia was isolated. Metal catalysts showed higher activity than the above basic oxides. They have, however, different activities. The reaction was faster over the active materials than over sodium chloride (NaCl) or glass wool or in a blank reactor without any catalyst.