Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F15%3A00447333" target="_blank" >RIV/67985858:_____/15:00447333 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2015.04.036" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2015.04.036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2015.04.036" target="_blank" >10.1016/j.cattod.2015.04.036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Self-Sustained Oscillations of Temperature and Conversion in a Packed Bed Microreactor during 2-Methylpropene (Isobutene) Hydrogenation

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

—

Svazek periodika

256

Číslo periodika v rámci svazku

NOV 1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

250-260

Kód UT WoS článku

000360657000005

EID výsledku v databázi Scopus

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