表面活化沸石外比表面积的试验研究  

An Experimental Investigation on External Surface Area of Surfactant-modified Zeolite

作　　者：陶鲜 [1] ZHANG Peng-fei  Robert Bowman S  

机构地区：[1]中国科学院广州地球化学研究所,广东,广州,510640,中国地质大学,武汉,地球化学研究所,湖北,武汉,430074 [2]University of West Florida, Pensacola, FL 32514 [3]New Mexico Institute of Mining and Technology, Socorro, NM 87801

出　　处：《材料开发与应用》2004年第3期1-3,11,共4页Development and Application of Materials

基　　金：中国地质大学(武汉)留学回国人员科研启动基金;国家留学回国人员科研启动基金资助;是美国能源部资助研究项目"DE AR21 95MC32108"的一部分。

摘　　要：利用阳离子表面活化剂(HDTMA Cl)对天然沸石进行了表面活化改性,并使用BET法测定了表面活化沸石颗粒(SMZ)和天然沸石颗粒的外比表面积,试验结果表明,粒径为4～100目时,天然沸石的比表面积为13.44～14.32m2/g,活化沸石的比表面积为4.18～6.79m2/g,与天然沸石相比较,其值要小1～2倍。通过轻拍式原子力显微镜镜像分析(TMAFM),探讨了SMZ外比表面积发生变化的原因。The external surface area of raw zeolite and surfactant-modified zeolite (SMZ) was measured using BET method. The experimental results showed that the external surface area of raw zeolite at 4～6 mesh, 8～14 mesh, 14～40 mesh and 80～100 mesh was 13.82 m^2/g, 13.44 m^2/g, 14.28 m^2/g and 14.32 m^2/g respectively. While for the SMZ, the external surface area was significantly lower than that of the raw zeolite, was 6.79 m^2/g, 5.88 m^2/g, 5.57 m^2/g, 4.18 m^2/g respectively. The surface character of raw zeolite and SMZ were examined with tapping-mode atomic force microscopy (TMAFM). TMAFM images showed that the surfactant resulted in the decreasing of the surface area of the SMZ.

关 键 词：HDTMA 表面活化沸石 外比表面积 原子力显微镜方法 

分 类 号：TQ424.23[化学工程]