摘要
酸热活化是增强粘土吸附性能的一种有效手段。本文采用湖北钟祥产的累托石为原料,酸热活化后,结合XRD、SEM和BET等表征手段,分析酸热处理前后累托石的结构变化,并用亚甲基蓝溶液来测试酸热处理对累托石吸附性能的影响。结果表明酸热处理增大了累托石的比表面积和吸附能力,认为吸附能力提升的原因为:无机盐溶解和层间水脱除打开了内部孔道;可交换阳离子的溶出;水分脱除减小了表层和内部孔道中水膜产生的吸附阻力。
he acid-heat activation is an effective means to enhance the adsorption properties of clay.The structure of the acid-heat treated rectorite from Zhongxiang,Hubei wa characterized by XRD,SEM and BET methods.Its adsorption performance was evaluated by methylene blue solution.The results showed that the acid-heat treatment increased the specific surface area and the adsorption capacity of the rectorite,and the reasons are as follows： the internal pore opening by the inorganic salts dissolving and the interlayer water removal,the dissolution of the exchangeable cations,and the decrease in the adsorption resistance due to the surface and internal water film removal.
出处
《陶瓷学报》
CAS
北大核心
2012年第1期54-58,共5页
Journal of Ceramics
基金
西安建筑科技大学重点培育学科建设专项基金(编号:XK201102)
关键词
酸热处理
累托石
吸附
acid-heat treatment
rectorite
adsorption
