摘要
用ＮＨ＿４Ｃｌ对内蒙古５种天然沸石矿化学改性得Ｈ型矿样。用静态容量法测试这５种原矿及其Ｈ型矿样子７７Ｋ时Ｎ＿２吸附等温线。发现除吸附性能不同外，均有程度不同的低压脱附滞后效应。用严继民、张启元方法和Ｄ～Ｒ方程计算了比表面积、孔径分布、微孔体积和特征吸附能。结果发现，Ｎ＿２吸附性能、低压脱附滞后效应、特征吸附能都与它们的微孔结构密切相关。
Natural zeolites of Inner Mongolia area were treated with NH_4Cl. Their N_2 adsorptionisotherms at 77K were measured, which showed the different low pressure hysteresis effectsof desorption besides their adsorption properties. Their specific surface areas, pore distributions, micropore volumes and characteristic energy of adsorption were calculated. The re-sults showed that the N_2 adsorption properties, low pressure hysteresis effects of desorptionand characteristic energy of adsorption were closely related with their micropore structure.
出处
《石油化工》
CAS
CSCD
北大核心
1994年第4期229-234,共6页
Petrochemical Technology
基金
国家自然科学基金
关键词
天然沸石
吸附
孔结构
沸石
natural zeolite,adsorption, pore structure
