Review on the Macro-Transport Processes Theory for Irregular Pores able to Perform Catalytic Reactions

被引:15
作者
Santamaria-Holek, Ivan [1 ]
Hernandez, Saul I. [1 ]
Garcia-Alcantara, Consuelo [1 ]
Ledesma-Duran, Aldo [2 ]
机构
[1] Univ Nacl Autonoma Mexico, Fac Ciencias, Unidad Multidiscliplinaria Docencia & Invest Juri, Juriquilla 76230, Queretaro, Mexico
[2] Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada CFATA, Juriquilla 76230, Queretaro, Mexico
关键词
generalized macro-transport theory; adsorbent and non-adsorbent membranes; bulk and surface diffusion; heterogeneous catalysis; mass transfer and effectiveness factor; ADSORPTION-DESORPTION; SURFACE-DIFFUSION; MASS-TRANSFER; KINETICS; THERMODYNAMICS; DISTRIBUTIONS; PROFILES; DYNAMICS; SIZE;
D O I
10.3390/catal9030281
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We review and generalize a recent theoretical framework that provides a sound physicochemical basis to describe how volume and surface diffusion are affected by adsorption and desorption processes, as well as by catalytic conversion within the space defined by the irregular geometry of the pores in a material. The theory is based on two single-dimensional mass conservation equations for irregular domains deduced for the volumetric (bulk) and surface mass concentrations. It offers a powerful tool for analyzing and modeling mass transport across porous media like zeolites or artificially build materials, since it establishes how the microscopic quantities that refer to the internal details of the geometry, the flow and the interactions within the irregular pore can be translated into macroscopic variables that are currently measured in experiments. The use of the theory in mass uptake experiments is explained in terms of breakthrough curves and effective mass diffusion coefficients which are explicitly related to the internal geometry of the pores.
引用
收藏
页数:25
相关论文
共 51 条
[1]  
[Anonymous], 2013, POROUS MEDIA GEOMETR
[2]  
[Anonymous], 1999, ELEMENTS CHEM REACTI
[3]   ON THE DISPERSION OF A SOLUTE IN A FLUID FLOWING THROUGH A TUBE [J].
ARIS, R .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1956, 235 (1200) :67-77
[4]   Diffusion in a tube of varying cross section: Numerical study of reduction to effective one-dimensional description [J].
Berezhkovskii, A. M. ;
Pustovoit, M. A. ;
Bezrukov, S. M. .
JOURNAL OF CHEMICAL PHYSICS, 2007, 126 (13)
[5]   Time scale separation leads to position-dependent diffusion along a slow coordinate [J].
Berezhkovskii, Alexander ;
Szabo, Attila .
JOURNAL OF CHEMICAL PHYSICS, 2011, 135 (07)
[6]   Diffusion in a two-dimensional channel with curved midline and varying width: Reduction to an effective one-dimensional description [J].
Bradley, R. Mark .
PHYSICAL REVIEW E, 2009, 80 (06)
[7]  
Brenner H., 1993, P R SOC LOND SER A
[8]  
Carberry J. J., 2001, CHEM REACTION REACTO
[9]   Effects of membrane pore geometry on fouling behavior during yeast cell microfiltration [J].
Chandler, Martin ;
Zydney, Andrew .
JOURNAL OF MEMBRANE SCIENCE, 2006, 285 (1-2) :334-342
[10]   DIFFUSION-COEFFICIENT FOR A BROWNIAN PARTICLE IN A PERIODIC FIELD OF FORCE .1. LARGE FRICTION LIMIT [J].
FESTA, R ;
DAGLIANO, EG .
PHYSICA A, 1978, 90 (02) :229-244