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

Seungrag Choi; Yue Nan; Lawrence L. Tavlarides

doi:10.1002/aic.17182

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

Seungrag Choi, Yue Nan, Lawrence L. Tavlarides

Department of Biomedical & Chemical Engineering

Research output: Contribution to journal › Article › peer-review

13 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 language	English (US)
Article number	e17182
Journal	AIChE Journal
Volume	67
Issue number	8
DOIs	https://doi.org/10.1002/aic.17182
State	Published - Aug 2021

Keywords

Ag particles
AgZ
aging process
iodine adsorption
reaction model

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
General Chemical Engineering

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10.1002/aic.17182

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title = "Kinetics of aging process on reduced Ag exchanged mordenite in dry air and humid air",

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.",

keywords = "Ag particles, AgZ, aging process, iodine adsorption, reaction model",

author = "Seungrag Choi and Yue Nan and Tavlarides, {Lawrence L.}",

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AU - Tavlarides, Lawrence L.

PY - 2021/8

Y1 - 2021/8

N2 - 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.

AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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