不同氮掺杂量碳纳米管的合成和表征

Synthesis and Characterization of Carbon Nanotubes with Different Amount of Nitrogen

以不同氮含量的有机胺为碳和氮源,用催化方法合成出了不同氮含量的大管径碳纳米管。采用Fe/SBA-15分子筛为催化剂,有机胺经过1073K高温裂解得到氮掺杂碳纳米管材料(CNx)。比较了苯、三乙胺、二乙胺、乙二胺四种原料对合成CNx形貌、产率、掺氮量和吸水率的影响;以二乙胺为原料合成出适中的氮碳比(N/C原子比为0.15)和较高产率(2.2g·(g·cat)-1)的竹节状CNx材料。

Nitrogen-doped, large-inner diameter carbon nanotubes （CNx） with different nitrogen contents were synthesized by catalytic method using organic amines with different nitrogen contents as carbon and nitrogen sources. CNx materials were synthesized with Fe/SBA-15 molecular sieve catalyst at high cracking reaction temperature of 1 073 K. The effects of benzene, triethylamine, diethylamine and ethylene diamine on the shape, yield, N-dopping content and water-adsorption content of CNx were discussed. CNx materials with moderate N/C ratio （0.15） and high yield （2.2 g· （g·cat）^-1） were synthesized using diethylamine as the raw material.