Determination of Intrapellet Rate Parametersby Single-Pellet Chromatography ( I ) Determination of Effective Diffusivities

张赣道

您当前的位置：

首页 >

文章列表页 >

Determination of Intrapellet Rate Parametersby Single-Pellet Chromatography ( I ) Determination of Effective Diffusivities

更新时间：2025-12-16

- Determination of Intrapellet Rate Parametersby Single-Pellet Chromatography ( I ) Determination of Effective Diffusivities
- CIESC Journal Issue 5, (1991)
- 作者机构：
  
  南京化工学院,南京
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 1991，
  
  Published：25 October 1991
- 稿件说明：
移动端阅览
张赣道. Determination of Intrapellet Rate Parametersby Single-Pellet Chromatography ( I ) Determination of Effective Diffusivities[J]. CIESC Journal, 1991, (5).
DOI：

张赣道. Determination of Intrapellet Rate Parametersby Single-Pellet Chromatography ( I ) Determination of Effective Diffusivities[J]. CIESC Journal, 1991, (5). DOI：

摘要

本文建立了一套具有极小死体积的能在250℃下用色谱法快速、准确地测定催化剂颗粒内气体有效扩散系数的装置.引入统计矩理论导出了有效扩散系数与实验矩之间的关联式.用一粒B110催化剂

在29℃及1.114×10~5Pa下测得(D_e)_(Ar-N_2)及(D_e)_(He-N_2)分别为0.009344与0.02963cm~2/s

其曲折因子等于3.16.实验结果与理论计算值十分吻合.该实验技术与装置是可靠的.

Abstract

An apparatus which had an extremely small dead volume and could determine intrapellet gas effective diffusivities by chromatography rapidly and accurately at 250℃ was built. The statistical moment theory was introduced and equations describing the relations between the diffusivities and the experimental moment were derived. For a B110 catalyst pellet

(De)Ar-N2 and (De)He-N2 at 29℃ and 1.114 × 105Pa were 0.009344 and 0.02936 cm2/s respectively and its tortuosity factor was equal to 3.16. The results agree well with theoretical calculation. Both the experimental technique and the apparatus are reliable.

关键词

Keywords

references

Views

207

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on microwave enhanced removal performance of organic matter in coking waste salt

Effect of belt structure design on the vulcanization characteristics of all-steel radial tires

Mechanism and regulation of supercooling behavior in imidazolium-based ionic liquids

Optimization of heat storage and release cycle performance of Ca(OH)2/CaO indirect reactor

Corrosion health status assessment method for refining unit pipeline based on GLAE-MLP

Related Author

No data

Related Institution

No data

⁰