固体碳在流化床反应器内甲烷裂解制氢过程中活性的研究

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本文在流化床中对活性炭、炭黑和碳纳米管等固体碳在甲烷裂解反应中的催化活性进行了研究。用傅立叶变换红外光谱、滴定分析和x-射线衍射研究了浓硝酸以及负载微量金属的表面改性过程对固体碳表面性质和体相结构的影响。结果表明:经浓HNO_3处理以后,固体碳体相结构没有发生明显变化,AC和CB表面生成了大量含氧基团,在高温反应条件下,含氧基团分解会生成甲烷裂解反应需要的活性位,提高了反应的初活性,在CNT上则没有这种作用。采用等体积浸渍法把Ni、Co和Pd-Ni负载到AC表面不能有效提高AC在甲烷裂解反
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