钛硅分子筛催化剂上苯的室温“存储-等离子体氧化”脱除
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- 英文论文题名：Non-thermal Plasma Assisted "Storage-oxidation" Cycling Process for Indoor Benzene Removal at Room Temperature
- 论文作者：王宜迪 ; 陈冰冰 ; 石川
- 英文论文作者：Yidi Wang ; Bingbing Chen ; Chuan Shi ; Laboratory of Plasma Physical Chemistry ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学等离子体物理化学实验室;
- 论文关键词：苯 ; TS-1 ; 等离子体 ; 存储-氧化 ; 循环
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：X51;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：314k
- 原文格式：D
- 会议级别：全国
摘要
苯的主要脱除方法包括催化氧化法和吸附法。由于苯分子的结构稳定性,负载贵金属催化剂催化苯的完全氧化也要在150°C以上。常用的活性炭吸附剂消除苯存在选择性差、难再生的问题。基于上述研究现状,我们提出了一种针对室内空气中低浓度苯的的室温"存储-等离子体辅助氧化"的循环脱除方法。室温存储阶段,利用具有优异疏水性的钛硅分子筛(TS-1)对苯的择形吸附性能将苯富集于催化剂的孔道之中,并通过AgCu金属改性进一步提高苯的存储能力。再生阶段,引入空气等离子体,对存储饱和后的催化剂进行介质阻挡放电,放电过程中产生大量的活性氧物种,室温即可将存储的苯完全氧化为CO_x和H_2O,使催化剂得以原位再生,再生过程没有苯的逸出(碳平衡超过98%),没有NO_x等副产物生成。该循环方法具有耐湿性好,能耗低,无需使用贵金属催化剂,且全过程在室温条件下操作的显著特点,为室内空气中低浓度VOC的室温消除提供了新思路和新方法。
As to indoor benzene,due to its low concentration,it is impossible to heat the whole air to at least 150℃ for C_6H_6catalytic oxidation.On the other hand,physical adsorption is suggested to be a better choice.However,materials such as active carbons have the problem in regeneration.Moreover,high concentration of C_6H_6 will be released during the regeneration process.Therefore,in the present study,we proposed a novel "storage-oxidation" cycling process operated at room temperature,with assistance of non-thermal plasma(NTP) in regeneration phase for stored C_6H_6 oxidation.High hydrophobic zeolite TS-1 was selected as the supporter.Compared with the thermal regeneration,the good humidity tolerance,non-benzene release,and low energy cost was achieved in the non-thermal air plasma regeneration,which providing a possible way for indoor benzene purification.
As to indoor benzene,due to its low concentration,it is impossible to heat the whole air to at least 150℃ for C_6H_6catalytic oxidation.On the other hand,physical adsorption is suggested to be a better choice.However,materials such as active carbons have the problem in regeneration.Moreover,high concentration of C_6H_6 will be released during the regeneration process.Therefore,in the present study,we proposed a novel "storage-oxidation" cycling process operated at room temperature,with assistance of non-thermal plasma(NTP) in regeneration phase for stored C_6H_6 oxidation.High hydrophobic zeolite TS-1 was selected as the supporter.Compared with the thermal regeneration,the good humidity tolerance,non-benzene release,and low energy cost was achieved in the non-thermal air plasma regeneration,which providing a possible way for indoor benzene purification.
引文
[1]Shi,C*;Wang,Y.Zhu,A.M.et al.,Catal.Commun,2012,28:18-22
[2]Wang,Y.;Zhu,X.B.;Shi,C.*et al.,Appl.Catal.,B,2014,160-161:542-551
[3]Wang,Y.;Zhu,A.M.;Shi,C.*et al.,Catal.Commun.,2013,36:52-57
[2]Wang,Y.;Zhu,X.B.;Shi,C.*et al.,Appl.Catal.,B,2014,160-161:542-551
[3]Wang,Y.;Zhu,A.M.;Shi,C.*et al.,Catal.Commun.,2013,36:52-57