首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Distinguishing Bulk-Diffusion from Surface-Desorption Limited Gas Release Processes
【24h】

Distinguishing Bulk-Diffusion from Surface-Desorption Limited Gas Release Processes

机译:区分表面解吸受限气体释放过程中的本体扩散

获取原文
获取原文并翻译 | 示例
           

摘要

The release of a gas limited by surface desorption, or by diffusion from the bulk of spherical pebbles is revisited. A method is proposed to identify the release limiting process, by comparing a partial temperature ramp, up to slightly beyond the release peak, followed by a rapid temperature drop, to a second, full release ramp. Comparing the release curve from the second ramp to that of the first one: ⅰ) the peak is unmoved in first order desorption kinetics,.and moves to higher temperature in the other cases, ⅱ) as compared to the Arrhenius analysis of the first curve, that of the second is, again, identical in first order kinetics, in second order desorption it maintains the slope but lowers the intercept at the reciprocal temperature origin, and it is inapplicable in bulk diffusion kinetics.
机译:再次讨论了受表面解吸或受球形卵石扩散影响的气体释放。提出了一种方法,通过比较直至略微超过释放峰的部分温度上升,然后是快速下降的温度,与第二次完全释放上升进行比较,来确定释放限制过程。比较从第二个斜面到第一个斜面的释放曲线:first)峰在一级解吸动力学中不动,在其他情况下移动到更高的温度,ⅱ)与第一条曲线的Arrhenius分析相比,第二级的,再次在一级动力学上是相同的,在第二级解吸中,它保持了斜率,但是降低了在相反温度起点处的截距,并且不适用于整体扩散动力学。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号