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.

中文翻译：

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干燥空气和潮湿空气中还原银交换丝光沸石老化过程动力学

研究了包括干燥空气和潮湿空气在内的废气流对还原银交换丝光沸石 (Ag ⁰ Z) 的老化影响。老化的 Ag ⁰ Z 是通过将 Ag ⁰ Z暴露在不同老化温度、时间和水蒸气浓度下的干燥空气和潮湿空气中制备的。通过连续流动吸附系统获得老化的 Ag ⁰ Z上的碘负载能力。在 Ag ⁰ Z 暴露于干燥空气和潮湿空气后，观察到显着的碘负载能力损失。进行理化分析，观察Ag ⁰ Z老化后的理化变化。根据碘吸附数据和样品分析，发现老化银上的碘负载能力干燥空气和潮湿空气中的⁰ Z 随着老化温度、时间和水蒸气浓度的增加而降低。伪反应模型很好地描述了实验数据，Ag ⁰的氧化是老化过程中的速率决定步骤。