Design and operational limits of an ATR-FTIR spectroscopic microreactor for investigating reactions at liquid-solid interface

被引：28
作者：
Aguirre, Alejo
Kler, Pablo A.
Berli, Claudio L. A.
Collins, Sebastian E.
机构：
[1] UNL, CONICET, INTEC, Santa Fe, Argentina
[2] Univ Nacl Litoral, Inst Desarrollo Tecnol lnd Quim INTEC, Santa Fe, Argentina
来源：
CHEMICAL ENGINEERING JOURNAL | 2014年 / 243卷
关键词：
Attenuated total reflection; Infrared spectroscopy; Catalysis; Transport; Surface reaction; Fluid-dynamics; MODULATION EXCITATION SPECTROSCOPY; CO ADSORPTION; OPERANDO; DIFFUSION; TRANSPORT; CATALYST; OXIDATION; CELL;
D O I：
10.1016/j.cej.2014.01.001
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This work presents the design and characterization of an optimized attenuated total reflection (ATR) microfluidic cell to assess intrinsic kinetic parameters of reactions at the liquid/solid interface under chemical control. A theoretical and computational investigation of convection, diffusion, and adsorption is presented. Transport dynamics in transient-flow experiments is characterized by a convective and diffusive mass transport of the solution species to the surface of the ATR crystal. Criteria to determine the mass transport limitations of the adsorption process are presented as a function of the Damkohler and Biot numbers. The CO adsorption on a thin film of platinum is studied in order to validate the model. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：197 / 206
页数：10
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