摘要
以碳纳米管为载体,用化学沉积法制备了Cu／CNTs复合粒子,并用TEM、SEM、 FT-IR、XRD、XPS和DTA对其表观形貌、结构及催化性能进行了表征．结果表明,CNTs 和Cu之间无论是简单混合还是复合,对高氯酸铵(AP)的热分解均有催化作用．与纯AP相比,Cu／CNTs复合粒子中的AP高温分解峰温降低126．3℃,低温分解峰几乎消失,表观分解热由309．92J／g提高到711．13J／g;与简单混合物相比,复合粒子中的AP高温分解峰温降低 11．4℃,表观分解热由494．06J／g提高到711．13J／g．表明CNTs与Cu的复合处理可显著提高其对AP热分解反应的催化作用．
The Cu/CNTs composite particles were prepared by the chemistry sediment method and using the carbon nanotubes as the carrier. The composite particles obtained were characterized by SEM, TEM. To analyze the catalytic effect of Cu/CNTs composite particles on the thermal decomposition of AP in the composite particles, the comparison sample by simply mixing Cu particles and CNTs particles with AP respectively was prepared and DTA experiments were used to characterize their catalytic performance. Results indicate that the catalytic performance of Cu/CNTs composite particles is superior to that of the simply mixed sample. Compared with the simply mixed sample of Cu and CNTs and AP, the peak temperature of high temperature decomposition of Cu/CNTs composite particles decreases 11.4℃, and the total heat release improves from 494.06J/g to 711.13J/g. It is shown that the catalytic performance of Cu and CNTs on the thermal decomposition of AP can be improved by composition.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第2期303-308,共6页
Journal of Inorganic Materials
基金
国家自然科学基金(50306008)江苏省自然科学基金(BK2003421)总装预研基金(41328030507)
关键词
铜
碳纳米管
高氯酸铵
复合催化
copper
carbon nanotube
ammonium perchlorate
catalyst performance
