摘要
研究了反应压力对太西无烟煤制备活性炭的炭化和活化过程的影响.反应压力能够改变炭化产物和活化产物的吸附性能和孔径分布.加压炭化影响了热解产物的传质过程,提高了发生二次反应的机会,而加压活化能够影响活化反应的吸附平衡和反应速率.随着反应压力的提高,活性炭产品的堆比重降低,碘和亚甲蓝吸附值提高,比表面积和孔容提高,形成更多的微孔结构.
The influences of pressure on the carbonization and activation of activated carbon from Taixi anthracite coal were investigated.The system pressure changed the adsorption abilities and pore size distributions of carbide and activated carbon.The carbonization pressure influenced the mass transfer process of pyrolysis products and promoted the secondary reactions, while the activation pressure changed the adsorption equilibriums and reaction rates of the activation reaction.To activate carbon products, with the reaction pressure increasing, bulk density lowered, iodine number and methylene blue adsorption increased, specific surface area and pore volume increased and more micropores were formed.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2005年第3期353-357,共5页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50272028)
关键词
压力
活性炭
炭化
活化
pressure
activated carbon
carbonization
activation
