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Direct detection of coke deposits on fixed bed catalysts by electrical sensors

Title data

Müller, Norbert ; Jess, Andreas ; Moos, Ralf:
Direct detection of coke deposits on fixed bed catalysts by electrical sensors.
In: Sensors and Actuators B: Chemical. Vol. 144 (2010) Issue 2 . - pp. 437-442.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2009.03.008

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/5-1 and JE 257/12-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The activity and the rate of deactivation of heterogeneous fixed bed catalysts are substantially influenced by the formation of coke deposits. In the chemical industry, especially in refineries and in petrochemical processes, the continuous direct and in situ monitoring of the level of the coke load in a catalytic reactor would be an additional controlling instrument of high value. In order to contribute to the development of such sensors, a representative pellet of an alumina-based chromium-oxide-coated catalyst was used in this work as a model system. The pellet was contacted and electrically measured by impedance spectroscopy. By combination with a gravimetrical method, a clear relationship between coke loading and the respective electrical signal could be observed, both during coke formation and during the regeneration by coke burn-off.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Coke; Soot; Sensor; Catalytic reforming; Impedance spectroscopy
Institutions of the University: Faculties
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 > Faculty of Engineering Science > Chair Functional Materials
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
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: 21 Jan 2015 10:46
Last Modified: 13 Nov 2015 10:15
URI: https://eref.uni-bayreuth.de/id/eprint/5663