【作者】 薛建伟； 朱恒科； 吕志平； 李福祥； 窦涛；

【Author】 XUE Jian-wei ZHU Heng-ke L(?) Zhi-ping LI Fu-xiang DOU Tao (Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan 030024,China)

【机构】 太原理工大学精细化工研究所；

【摘要】 分子筛是一类具有规则可调变均匀孔径的多孔材料。具有很大的比表面积和孔容,对多种气体有非常好的吸附性能。A 型分子筛和 X 型分子筛具有不同的孔笼结构和组成,SBA-15是近几年来研究热门的新型介孔分子筛,采用 P-C-T 氯气吸附装置对4种分子筛的氯气吸附性能进行了研究。红外光谱结果表明。吸附氯气后的 CaA、NaX 和 SBA-15分子筛骨架结构的特征峰仍然存在;XRD 衍射谱图表明,吸附氯气后的 CaA、NaX 和 SBA-15的特征衍射峰仍然存在.但峰强度略有减弱。实验数据表明,分子筛氯气吸附性能受骨架结构、孔容积、孔径大小的影响很大,阳离子的不同也会引起对氯气吸附性能的变化。随着温度的下降,NaX 分子筛对氯气的吸附量明显增大。在30℃、0.274 MPa下,CaA 分子筛的氯气吸附量可以达到34%(质量分数)。更多还原

【Abstract】 Molecular sieve is a type of porous material which has regular,variable and uniform pore structure. Having high specific surface area and pore volume,molecular sieve has excellent adsorption properties for many kinds of gases.A and X molecular sieves have different pore geometries and composition.SBA-15 is an active research meso-porous molecular sieve in recent years.Chlorine adsorption properties of four molecular sieves were studied with the P-C-T apparatus.Infrared spectra showed that characteristic peaks of framework structure of CaA, NaX and SBA-15 after Cl₂ adsorption still existed;XRD patterns showed that characteristic peaks of CaA,NaX and SBA-15 after Cl₂ adsorption were still in,but the peak intensity decreased slightly.Experimental data showed that Cl₂ adsorption properties of molecnlar sieve were greatly affected by its framework structure,pore volume and pore size,and also by the difference of cations.The Cl₂ adsorption capacity of NaX molecular sieve increases obviously as the temperature is reduced.At 30℃,the Cl₂ adsorption capacity of CaA can reach to 34%（mass fraction）at 0.274 MPa.更多还原