Open AccessCatalyst Particle Porosity Effect upon Flameless Combustion Characteristics
Author(s) -
В. В. Калінчак,
А. С. Черненко,
A. F. Fedorenko,
А. Н. Софронков,
V. V. Kramarenko
Publication year - 2020
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.21.1.124-131
Subject(s) - porosity , catalysis , combustion , particle (ecology) , mass transfer , diffusion , materials science , particle size , heat transfer , impurity , chemical engineering , catalytic combustion , kinetic energy , thermodynamics , chemistry , composite material , chromatography , organic chemistry , physics , oceanography , quantum mechanics , engineering , geology
The problem of heat and mass transfer of a porous catalyst particle is considered. On the her surface, including the inner surface of the pores, an irreversibly heterogeneous first-order reaction proceeds. It has been analytically shown that in a heated gas mixture, the catalyst's porosity reduces the minimum impurity's concentration of catalytic spontaneous combustion in the mixture and increases the catalyst particle's corresponding diameter. This concentration corresponds to the external kinetic and internal diffusion reaction's modes.