比如火山，金属碳化物，甚至是二氧化碳、水、催化剂与阳光的相互作用而形成的。
Such as volcanoes, carbides of metals, or simply by the reaction of carbon dioxide, water and catalysts with sunlight.
结果表明：铁碳化物的生成与催化剂活性组分同载体的相互作用有关。
The results show that the formation of iron carbide is related to the interaction between the active component and the support of the catalysts.
着重概述了传统金属硫化物催化剂的改性方法，新型的金属碳化物、金属氮化物和金属磷化物催化剂的研究现状。
Improvement and modification of traditional metal sulphide catalysts, and the current situation of new catalysts such as metal carbides, metal nitrides and metal phosphides are emphasized.
目前，正丁烷脱氢异构催化剂可以分为两类，过渡金属双功能催化剂和过渡金属氮化物、碳化物和碳氧化物催化剂。
The catalysts on studying can divide into two kinds: the transition metal bifunctional catalysts and the nitride, carbide and oxycarbide catalysts of transition metals.
目前，正丁烷脱氢异构催化剂可以分为两类，过渡金属双功能催化剂和过渡金属氮化物、碳化物和碳氧化物催化剂。
The catalysts on studying can divide into two kinds: the transition metal bifunctional catalysts and the nitride, carbide and oxycarbide catalysts of transition metals.
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