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Oscillation theory : Part 1. Temperature difference between the center of a catalyst particle and its surface: contradiction to Thiele/Zeldovich model

Title data

Datsevich, Leonid:
Oscillation theory : Part 1. Temperature difference between the center of a catalyst particle and its surface: contradiction to Thiele/Zeldovich model.
In: Applied Catalysis A: General. Vol. 262 (2004) Issue 2 . - pp. 149-153.
ISSN 0926-860X
DOI: https://doi.org/10.1016/j.apcata.2003.11.023

Official URL: Volltext

Abstract in another language

The oscillation theory for liquid–liquid–gas reactions on a porous catalyst is considered in [1–3]. According to this theory, under some conditions the oscillatory motion of liquid in pores can take place due to the formation of gas or gas–vapor bubbles. Due to forced alternating motion of liquid, the reaction should run with the rate considerably higher than the rate predicted by the Thiele/Zeldovich model and, as a result, the temperature difference between the surface of the catalyst particle and its center (ΔT) should also be higher. In this paper, the results of measuring ΔT during the chemical reaction are presented. The experimental values of ΔT occur to be 4–9 times more than the maximum possible values estimated by the Thiele/Zeldovich model. Such a significant distinction can be considered as a confirmation of the oscillation theory.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Oscillation theory; Temperature difference; Multiphase reactions; Catalysis
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 24 Apr 2015 08:35
Last Modified: 24 Apr 2015 08:35
URI: https://eref.uni-bayreuth.de/id/eprint/10669