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Indexed by:期刊论文

Date of Publication:2013-11-01

Journal:JOURNAL OF ENERGY CHEMISTRY

Included Journals:SCIE、EI、Scopus

Volume:22

Issue:6

Page Number:902-906

ISSN No.: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.