Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-11-01

Journal: JOURNAL OF ENERGY CHEMISTRY

Included Journals: Scopus、EI、SCIE

Volume: 22

Issue: 6

Page Number: 902-906

ISSN: 2095-4956

Key Words: carbonyl sulfide; adsorption; pi-complexation; completely regeneration; Ag-modified adsorbents

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 x 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 degrees C. The adsorption ability remained stable even after eight cycles of regeneration.