CCVD法制碳纳米管用Ni-Mg-O催化剂的制备研究

Abstract

用草酸盐共沉淀法制备一类固溶体型NixMg1-xO纳米催化剂.该类催化剂用于甲烷催化分解合成碳纳米管(CNTs)显示出优良的性能.催化剂的制备优化研究揭示,催化剂的金属元素组成、氧化前驱物的焙烧和还原的温度对催化剂的性能有强烈的影响.在经优化的制备条件(n(Ni)∶n(Mg)=0.5:0.5,焙烧温度873 K,H2-还原温度973 K)下制备的Ni0.5Mg0.5O催化剂上,在经优化的制管反应条件(873 K,甲烷原料气GHSV=5×104mL/(h.g))下,反应2 h的CNTs产物的产率达到14.5 g/g

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Xiamen University Institutional Repository

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Last time updated on 16/06/2016

This paper was published in Xiamen University Institutional Repository.

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