Influence of Particle Properties on the Yield and Selectivity of Fast Heterogeneously Catalyzed Gas-Liquid Reactions

被引：0

作者：

Raffensberger, Jodi ^{[1
]}

Koynov, Athanas A. ^{[1
]}

Glasser, Benjamin J. ^{[1
]}

Khinast, Johannes G. ^{[1
]}

机构：

[1] Rutgers State Univ, Piscataway, NJ 08855 USA

来源：

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING | 2003年 / 1卷

关键词：

Bubble dynamics; selectivity; particle dynamics; Euler-Lagrange simulation;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Detailed numerical results are presented that show how catalyst particles can be tailored to influence the yield and selectivity of fast, heterogeneously-catalyzed gas-liquid chemical reactions. Results from our Euler-Lagrange study demonstrate that the physical characteristics of the catalyst particle (e.g. size and density) impact where the particles concentrate in the wake of the bubble. Smaller particles concentrate in the wake, while larger particles move out of the wake. Since the dissolved gas concentration is the highest in the wake small particles will catalyze the reaction at higher concentrations than large particles. Additionally, smaller and lighter particles remain in the recirculation zone for an extended period of time, whereas the heaviest particles are removed from this region. By carefully choosing particles of a certain Stokes number, it is shown that the yield and selectivity of a fast parallel reaction network can be enhanced.

引用

页数：18

共 23 条

[1] A computational and experimental study of mixing and chemical reaction in a stirred tank reactor equipped with a down-pumping hydrofoil impeller using a micro-mixing-based CFD model. [J].