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.
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.
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.
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