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Kinetics of Aging Process on Reduced Ag Exchanged Mordenite in Dry Air and Humid Air
  • Seungrag Choi,
  • Yue Nan,
  • Lawrence Tavlarides
Seungrag Choi
Syracuse University, Syracuse University
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Yue Nan
Syracuse University
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Lawrence Tavlarides
Syracuse University
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Abstract

Aging effects of off-gas streams including dry air and humid air on reduced silver exchanged mordenite (Ag0Z) were studied. Aged Ag0Z was prepared by exposing Ag0Z to dry air and humid air at different aging temperatures, time, and water vapor concentrations. Iodine loading capacity on the aged Ag0Z was obtained through a continuous-flow adsorption system. Significant iodine loading capacity losses were observed after the Ag0Z was exposed to dry air and humid air. Physical and chemical analyses were conducted to observe the physical and chemical changes of Ag0Z after being aged. From iodine adsorption data and sample analyses, it was found that iodine loading capacity on the aged Ag0Z in dry air and humid air decreases with increasing aging temperatures, time and water vapor concentrations. The pseudo reaction model describes experimental data well and the oxidation of Ag0 is the rate determining step in the aging process.

Peer review status:Published

24 Aug 2020Submitted to AIChE Journal
09 Sep 2020Submission Checks Completed
09 Sep 2020Assigned to Editor
15 Sep 2020Reviewer(s) Assigned
02 Dec 2020Editorial Decision: Revise Minor
10 Dec 20201st Revision Received
13 Dec 2020Submission Checks Completed
13 Dec 2020Assigned to Editor
14 Dec 2020Reviewer(s) Assigned
30 Dec 2020Editorial Decision: Accept
03 Mar 2021Published in AIChE Journal. 10.1002/aic.17182