摘要
采用H2O2和HNO3作为氧化剂,对市售煤基活性炭表面进行化学改性,探究活性炭表面官能团随氧化剂浓度的变化规律及其对甲烷吸附的影响。结果发现,硝酸氧化增加了活性炭表面的酸性官能团,碱性官能团降低,双氧水氧化使活性炭表面的内酯基含量明显增加,酸性官能团不利于活性炭对甲烷的吸附,而碱性官能团有利于甲烷的吸附。
The activated carbon was treated by H2O2 and HNO3,the relationship between the concentration of oxidating agent and the fuctional groups of activated carbon was investigated to know how the fuctional groups affect the absorption of methane.It was found that when the activated carbon was treated by HNO3,the acid fuctional groups were increased and alkaline fuctional groups decreased;when the activated carbon was treated by H2O2,the lactonic group was increased.It was also found that the acid fuctional groups could inhibit the absorption of methane,and the alkaline group could promote the absorption of methane.
出处
《化工技术与开发》
CAS
2012年第3期18-20,共3页
Technology & Development of Chemical Industry
关键词
活性炭
改性
甲烷
浓缩
activated carbon
modification
methane
concentration
