Kinetics of aging process on reduced Ag exchanged mordenite in dry air and humid air

Seungrag Choi, Yue Nan, Lawrence L. Tavlarides

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.

Original languageEnglish (US)
JournalAIChE Journal
DOIs
StateAccepted/In press - 2021

Keywords

  • catalysis
  • design
  • diffusion
  • liquids
  • zeolites

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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