摘要
采用吸附仪测定了所制负载金属活性碳纤维的吸附等温线 ,然后用不同理论方法对孔径分布进行表征分析。结果表明负载Pd Cu的活性碳纤维仍以微孔为主 ,微孔孔径呈单分布。随着活性碳纤维负载Pd Cu量的增加 ,中孔孔容增大 ,纤维孔径分布曲线的举点 (峰值 )位置略有增加 ,平均微孔孔径增大 ,但负载量在 10 %以内时最大微孔孔容和BET比表面积下降。负载Pd
The pore distribution of metal coating activated carbon fibers were analyzed by HK, BJH and Dubinin theories from the nitrogen adsorption isotherms measured by auto adsorption meter. The results indicated that the palladium/copper coating activated carbon fiber mainly contains micro-pores which present narrow distribution. When the coating amount of palladium/copper increases, the volume of middle-pores of the fiber increases and the peak diameter of pore distribution and mean micro-pore diameter increase slightly. However, the maximum micro-pore volume and BET surface area of the fiber will decrease as the metal content rises to over 10%, There is a close relationship between the pore structure of metal coating activated carbon fiber and its catalytic reaction ability.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第1期46-50,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省自然科学基金重点资助项目
教育部跨世纪优秀人材培养计划基金
高等学校骨干教师资助计划项目基金资助
