Effect of Intradiffusion Resistance on the Chemical Process in a Nonspherical Catalyst Pellet Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
||||
|---|---|---|---|---|---|
| Output data | Year: 2021, Volume: 62, Number: 4, Pages: 551-556 Pages count : 6 DOI: 10.1134/S0023158421040133 | ||||
| Tags | nonspherical catalyst pellet, first-order reaction, equivalent pellet size, catalyst effectiveness factor | ||||
| Authors |
|
||||
| Affiliations |
|
Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0005 |
Abstract:
The problem of a three-dimensional catalyst pellet with three characteristic sizes a, b, and c under conditions of intradiffusion resistance and a first-order reaction has been discussed. Using an exact solution in the Cartesian coordinate system, dependences for calculating the equivalent size and effectiveness factor of the pellet on Thiele parameter ψ have been proposed. A specific feature of the solution is the dependence of the pellet shape on the Thiele parameter. In dimensionless coordinates, at ψ → 0, the pellet surface tends to a sphere with unit radius; at ψ → ∞, it assumes the shape of a regular octahedron, the vertices of which are localized on the coordinate axes at a unit distance from the origin. In dimensional coordinates, depending on the ratio of parameters a, b, and c, the pellet can assume shapes similar to those of ellipsoids, discs, or “cigars.” At high Thiele parameter values, the effectiveness factor of nonspherical and spherical pellets is described by a single dependence equal to 3/ψ.
Cite:
Zavarukhin S.G.
, Rodina V.O.
Effect of Intradiffusion Resistance on the Chemical Process in a Nonspherical Catalyst Pellet
Kinetics and Catalysis. 2021. V.62. N4. P.551-556. DOI: 10.1134/S0023158421040133 WOS Scopus РИНЦ AN OpenAlex
Effect of Intradiffusion Resistance on the Chemical Process in a Nonspherical Catalyst Pellet
Kinetics and Catalysis. 2021. V.62. N4. P.551-556. DOI: 10.1134/S0023158421040133 WOS Scopus РИНЦ AN OpenAlex
Original:
Заварухин С.Г.
, Родина В.О.
Влияние внутридиффузионного сопротивления на химический процесс в зерне катализатора несферической формы
Кинетика и катализ. 2021. Т.62. №4. С.501-506. DOI: 10.31857/S0453881121040158 РИНЦ OpenAlex
Влияние внутридиффузионного сопротивления на химический процесс в зерне катализатора несферической формы
Кинетика и катализ. 2021. Т.62. №4. С.501-506. DOI: 10.31857/S0453881121040158 РИНЦ OpenAlex
Dates:
| Submitted: | Jan 20, 2021 |
| Accepted: | Apr 8, 2021 |
| Published print: | Jul 1, 2021 |
| Published online: | Aug 19, 2021 |
Identifiers:
| Web of science: | WOS:000686793400015 |
| Scopus: | 2-s2.0-85113189319 |
| Elibrary: | 47030024 |
| Chemical Abstracts: | 2021:1846287 |
| OpenAlex: | W3195100494 |