Removal of carbonyl sulfide from CO_2 stream using AgNO_3-modified NaZSM-5

作     者：Yanjun Wang Shaoyun Chen Heng Chen Xingzhou Yuan Yongchun Zhang 

作者机构：State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2013年第22卷第6期

页      面：902-906页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

主　　题：carbonyl sulfide adsorption π-complexation completely regeneration Ag-modified adsorbents 

摘      要：Removal of carbonyl sulfide(COS) from CO2 stream is significant for the production and utilization of food grade CO2. This study investigates the adsorption performance of Ag/NaZSM-5 as adsorbent prepared by incipient wetness impregnation for the removal of COS from a CO2 stream in a fixed-bed adsorption apparatus. Effects of various conditions on the preparation of adsorbent, adsorption and desorption were intensively examined. The results revealed that COS can be removed to below 1×10-9from a CO2stream(1000 ppm COS/CO2) using Ag/NaZSM-5(10 wt% AgNO3) with an adsorption capacity of 12.86 mg·g-1. The adsorbent can be fully regenerated using hot air at 450 C. The adsorption ability remained stable even after eight cycles of regeneration.