Removal of carbonyl sulfide from CO2 stream using AgNO3-modified NaZSM-5 |
| |
Authors: | Yanjun Wang Shaoyun Chen Heng Chen Xingzhou Yuan Yongchun Zhang |
| |
Affiliation: | State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China |
| |
Abstract: | 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?9 from a CO2 stream (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. |
| |
Keywords: | carbonyl sulfide adsorption π-complexation completely regeneration Ag-modified adsorbents |
本文献已被 ScienceDirect 等数据库收录! |