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The study on the adsorption performance of Butane by impregnated activated carbon
Author(s): 
Pages: 60-65
Year: Issue:  1
Journal: Renewable Energy Resources

Keyword:  活性炭 吸附 浸渍改性 丁烷工作容量;
Abstract: 借助SEM,FT-IR,Bohem滴定,氮气吸附对改性后的活性炭进了分析,研究了KOH溶液、NaHCO3溶液、HNO3溶液浸渍改性活性炭机理。对3种浸渍改性剂改性效果进行了比较,结果表明KOH溶液、NaHCO3溶液的改性效果要优于HNO3溶液的改性效果;而NaHCO3溶液的浸渍改性作用比KOH溶液更明显些。浸渍过程中会改变活性炭表面和孔结构,出现了凹凸不平、裂痕、团聚现象,使比表面积发生改变;浸渍作用会引起孔隙扩大、孔道坍塌、孔径堵塞等现象,使得孔容积发生变化,进而影响了活性炭的吸附性能。另外,浸渍改性过程会影响活性炭表面的官能团,进而影响其吸附性能:总碱度越大,丁烷吸附性能越小;活性炭表面的羧基越少、内酯基越少,酚羟基浓度越多,对丁烷的吸附量也越大。
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