VOCs在分子筛上吸附性能的研究进展

摘要/Abstract

摘要：

简单介绍了一些常见分子筛的构型及特点,讨论了不同构型分子筛对各种VOCs废气吸附效果的研究进展。总结了各类分子筛对VOCs的吸附特性,发现立方构型的分子筛对VOCs废气的吸附效果最佳。小结了影响分子筛吸附性能的因素,发现分子筛的比表面积、孔容、硅铝比、表面官能团等自身性质都会对吸附VOCs废气的性能产生一定的影响。另外,分子筛的吸附容量还与吸附时的进气流速、入口气体浓度、吸附剂床层高度等工况有关。最后,对现有研究做了总结与展望,为分子筛吸附VOCs的合理应用提供了理论支持。

关键词: 分子筛, 吸附, VOCs

Abstract:

Configurations and characteristics of some common molecular sieves were briefly introduced.The research progress on adsorption of various VOCs by different molecular sieves was discussed.The adsorption characteristics of various molecular sieves on VOCs were summarized.It was found that the molecular sieves with cubic configuration had the best adsorption effect on VOCs.The factors affecting the adsorption performance of the molecular sieve were summarized.It was found that the specific surface area,pore volume,silicon-aluminum ratio and surface functional group of the molecular sieve had certain influence on the performance of the adsorbed VOCs.In addition,the adsorption capacity of the molecular sieve was also related to the operating conditions such as the inlet flow rate,the inlet gas concentration,and the height of the adsorbent bed during adsorption.Finally,the existing research was summarized and prospected,which provided theoretical support for the rational application of molecular sieve adsorption VOCs.

Key words: molecular sieve, adsorption, VOCs

中图分类号:

TQ127.2

薛梦婷,李勇. VOCs在分子筛上吸附性能的研究进展[J]. 无机盐工业, 2019, 51(5): 12-16.

Xue Mengting,Li Yong. Research progress on adsorption properties of volatile organic compounds on molecular sieves[J]. Inorganic Chemicals Industry, 2019, 51(5): 12-16.

图/表 3

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来源	主要的VOCs种类
印刷厂	甲苯、乙酸乙酯等
半导体行业	丙酮、异丙醇、甲苯等
合成皮革厂	甲苯、N,N-二甲基甲酰胺（DMF）、丁酮等
涂料厂	甲苯、乙酸乙酯、异丙醇、丙酮、甲醛等
橡胶加工厂	苯、甲苯、丁酮、甲醛等
黏合剂厂	丁酮、乙酸乙酯、异丙醇等

晶系	特征	分子筛类型
立方构型	包含四元环和六元环	八面沸石（A、X、Y型）
六方构型	六元环	SBA型、MCM型等
正交或单斜	五元环	丝光沸石、ZSM-5等

晶系	分子筛	比表面积/ （m²·g^-1）	孔容/ （m³·g^-1）	平衡吸附量/ （g·g^-1）
立方构型^[6,7,8]	13X	407.46	0.29	0.136
	NaY	544.00	0.42	0.244
	NaY	818.42	0.38	0.233
六方构型^[6,7,8]	MCM-22	413.37	0.38	0.100
	SBA-15	612.00	1.00	0.148
	MCM-41	719.85	0.67	0.151
正交或单斜^[2,6]	H-ZSM-5	358.20	0.13	0.069
	Na-ZSM-5	383.70	0.18	0.078
	ZSM-5	373.81	0.18	0.078

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