ISSN:
1572-8986
Schlagwort(e):
Ammonia synthesis
;
catalysis in plasma
;
MgO
;
CaO
;
Al2O3
;
WO3
;
metal catalysts
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Technik allgemein
Notizen:
Abstract Ammonia synthesis from H2-N2 mixed 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-N2 mixed 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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00571275
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