Počet záznamů: 1
Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation
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SYSNO ASEP 0447333 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation Tvůrce(i) 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)Zdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 256, NOV 1 (2015), s. 250-260Poč.str. 11 s. Akce InternationalCongress of Chemical and Process Engineering CHISA 2014 /21./ Datum konání 23.08.2014-27.08.2014 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova hydrogenation ; microreactor ; oscillation Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000360657000005 EID SCOPUS 84949319927 DOI 10.1016/j.cattod.2015.04.036 Anotace 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. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2016
Počet záznamů: 1