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Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation
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SYSNO ASEP 0447333 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation Author(s) Stavárek, Petr (UCHP-M) RID, ORCID, SAI
Vajglová, Zuzana (UCHP-M) RID, ORCID, SAI
Křišťál, Jiří (UCHP-M) RID
Jiřičný, Vladimír (UCHP-M) RID, SAI
Kolena, J. (CZ)Source Title Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 256, NOV 1 (2015), s. 250-260Number of pages 11 s. Action InternationalCongress of Chemical and Process Engineering CHISA 2014 /21./ Event date 23.08.2014-27.08.2014 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords hydrogenation ; microreactor ; oscillation Subject RIV CI - Industrial Chemistry, Chemical Engineering Institutional support UCHP-M - RVO:67985858 UT WOS 000360657000005 EID SCOPUS 84949319927 DOI 10.1016/j.cattod.2015.04.036 Annotation Hydrogenation of 2-methylpropene over commercial Platinum catalyst was studied in the packed bed microreactor. The presence of heat and mass transfer limitations was assessed by means of common dimensionless criteria and some experimental diagnostics tests. The analysis results pointed to presence of diffusional limitations, therefore only a limited data set under the kinetic control regime was collected. At certain conditions, the self-sustained spontaneous and reproducible oscillations of 2-methylpropene conversion were observed. Catalyst bed temperature well reflected the course of 2-methylpropene conversion oscillations. The oscillations showed exceptionally long periods ranging from 11 to 22 hours depending on the space velocity. We explain the presence of oscillations as a result of complex interaction between the exothermic reaction, heat transfer and a reversible decrease in the catalyst activity. Possible mechanisms for temporary catalyst activity decrease were proposed. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2016
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