河北围场天然沸石的矿物学特征及吸附性研究  

Mineralogical characteristics and adsorption property of natural zeolite from Weichang area,Hebei Provence

作　　者：王程[1] 李文杰 冷少争 郭慧东 卢佼 张晓静 赵越 叶泽鹏 WANG Cheng;LI Wen-jie;LENG Shao-zheng;GUO Hui-dong;LU Jiao;ZHANG Xiao-jing;ZHAO Yue;YE Ze-peng(School of Material Science and Engineering,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials,Shaanxi University of Science and Technology,Xi’an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院陕西省无机材料绿色制备与功能化重点实验室

出　　处：《岩石矿物学杂志》2019年第6期753-760,共8页Acta Petrologica et Mineralogica

基　　金：国家自然科学基金项目(51604170);中国博士后基金(2016M602936XB);陕西省自然科学基金(2018JM5025);温州市科技计划项目(S20180008);国家大学生创新创业训练项目(201810708042)~~

摘　　要：河北承德围场地区含有储量丰富的天然沸石资源,然而目前关于该地区天然沸石的研究较少。本文利用X射线衍射仪、X射线荧光光谱仪、红外光谱仪、比表面积及孔隙度分析仪和扫描电镜及能谱分析仪等对围场天然沸石的矿物学特征进行了研究,并分析了围场天然沸石对苯、甲苯和水蒸气等的吸附性。结果发现,该地区天然沸石主要含斜发沸石和石英,硅铝比为5.3,样品中含有少量微孔和大量介孔,具有相对较高的比表面积;样品对苯、甲苯和水蒸气均具有良好的吸附效果。The Weichang area in Hebei Province has plenty of natural zeolite resources.However,limited researches have been paid to this zeolite.In this paper,such means as XRD,XRF,FTIR,specific surface area and pore size distribution analyzer and SEM-EDS were employed to analyze the mineralogical characteristics of the natural zeolite.Benzene,methylbenzene and water vapor were used to evaluate the adsorption property of the natural zeolite.The results showed that the natural zeolite consisted of clinoptilolite and quartz and the SiO2/Al2O3 ratio was 5.3.The natural zeolite had relatively high specific surface area(27.67 m2/g),a few micropores and plenty of mesopores.The zeolite exhibited good adsorption property on benzene,methylbenzene and water vapor.The maximum adsorption capacity and equilibrium time for benzene and methylbenzene were 1309.29 mg/g and 1101.96 mg/g,240 min and 300 min,respectively.The adsorption systems for benzene and methylbenzene obeyed the pseudo-second-order kinetic model,and Freundlich model could fit the isotherm well.The water vapor adsorption per unit area on the natural zeolite was 0.9358 mg/m2 under 70%humidity at 30℃for two days of adsorption.

关 键 词：河北围场 天然沸石 矿物学特征 吸附性 

分 类 号：P578.974[天文地球—矿物学]