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化学工业与工程 2014, Vol. 31 Issue (5) :1-7    DOI: doi: 10.13353/j.issn.1004.9533.2014.05.001
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CO吸附剂制备及其吸附脱除微量CO的性能
 李淑娜, 张东辉, 鲁东东
(天津大学化工学院,国家化学工程联合重点实验室,天津 300072)
Preparation of Carbon Monoxide Adsorbent and Its Adsorption Performance for Removing Trace Carbon Monoxide
 LI shu-Na, ZHANG  Dong-Hui, LU  Dong-Dong
(State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China)

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摘要 介绍了CO吸附剂的制备方法,研究了该吸附剂在固定床温度30 ℃、CO分压为6 kPa(a)下吸附一氧化碳的动态吸附性能,测定了穿透曲线,动态吸附容量为2.138 5 mmol/g,并用BET吸附仪测定了制备的CO吸附剂比表面积,用电感耦合等离子体原子发射光谱(ICP)测定其离子交换度为52%,含铜量为9.52%(质量分数)。通过粉末X射线衍射仪(XRD)和场发射扫描电子显微镜(SEM)表征发现,水热交换法制备CO吸附剂,Cu2+有效地取代了NaY原粉中Na+,经过焙烧还原后仍然能够维持原骨架结构的完整。用NH3-TPD考察了改性前后吸附剂酸度的变化以及用H2-TPR考察了吸附剂合适的还原温度。采用130 ℃氮气吹扫的方法再生,再生彻底并且吸附效果稳定。
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孙猛猛
张东辉
鲁东东
关键词一氧化碳;   离子交换;   铜吸附剂;   NaY分子筛;   吸附量     
Abstract: This article mainly introduced the preparation of carbon monoxide adsorbent, evaluated the adsorption performance of trace carbon monoxide in fixed bed at 30 ℃ and carbon monoxide partial pressure 6 kPa. The adsorption capacity was 2.138 5 mmol/g, which was calculated by integrating the breakthrough curve. The specific surface area of carbon monoxide adsorbent was determinated by BET adsorption instrument. The ion exchange degree was 52% and the copper content was 9.52% (mass fraction) measured by the inductively coupled plasma atomic emission spectrum (ICP). And through X-Ray diffractometer(XRD) and field emission scanning electron microscope(SEM), it was found that the carbon monoxide adsorbent prepared by ion-exchange between the solutions where copper effectively replaced sodium of the original sodium-Y molecular sieve, could still maintain the original skeleton structure after calcined. Using NH3-TPD investigated the modification to the acidity of adsorbent and using H2-TPR inspected the appropriate reduction temperature of the adsorbent. The adsorption can be regenerated mostly at 130 ℃ with purging nitrogen, and it still maintained a stable adsorption capacity after regeneration and reduction.
Keywordscarbon monoxide;   ion-exchange   copper adsorbent   NaY molecular sieve   adsorption capacity     
Received 2013-03-27;
Fund:

天津市科技支撑计划(2009F3-0005)。

Corresponding Authors: 张东辉,E-mail: donghuizhang@tju.edu.cn。     Email: donghuizhang@tju.edu.cn
About author: 李淑娜(1987-),女,硕士研究生,现从事吸附分离的研究。
引用本文:   
李淑娜, 张东辉, 鲁东东.CO吸附剂制备及其吸附脱除微量CO的性能[J].  化学工业与工程, 2014,31(5): 1-7
LI shu-Na, ZHANG Dong-Hui, LU Dong-Dong.Preparation of Carbon Monoxide Adsorbent and Its Adsorption Performance for Removing Trace Carbon Monoxide[J].  Chemcial Industry and Engineering, 2014,31(5): 1-7
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