氧化铝表面水蒸气吸附相变及其动力学特性研究

来源 :工程热物理学报 | 被引量 : 0次 | 上传用户：wyy_9715072

【摘要】

：

为了探讨气固界面吸附特性,采用实验研究和理论分析相结合的方法获取了水蒸气在氧化铝表面吸附的动力学及等温吸附曲线,结合Zeta等温吸附模型及统计速率理论,明晰了吸附过程中的团簇分布,确定了吸附相变及润湿转变条件.结果表明:在低压比区,吸附界面由零吸附单元及单分子团簇组成.随着压比的增大,小分子团簇减少,大分子团簇增加.当压比达到某一特定值,所有类型团簇出现概率相等,吸附熵达到极大值,界面开始发生相变.当压比增加至1.15时,液固界面代替气固界面,润湿所需的过冷度为2.1K.中压比区吸附速率随压比变化不大,

【作者】

：

宋本南吴春梅李友荣

【机构】

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低品位能源利用技术及系统教育部重点实验室,重庆大学能源动力工程学院,重庆400030

【出处】

：

工程热物理学报

【发表日期】

：

2021年10期

【关键词】

：

吸附相变动力学 Zeta等温吸附模型统计速率理论

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氧化铝表面水蒸气吸附相变及其动力学特性研究

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