Microreactor system for high - pressure continuous flow homogeneous catalysis measurements / Jaroslav Keybl in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11013–11022 Titre : Microreactor system for high - pressure continuous flow homogeneous catalysis measurements Type de document : texte imprimé Auteurs : Jaroslav Keybl, Auteur ; Klavs F. Jensen, Auteur Année de publication : 2011 Article en page(s) : pp. 11013–11022 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Homogeneous catalyst kinetic Résumé : A high-pressure gas–liquid system is presented for determining homogeneous catalyst kinetic parameters. Microreactors enable segmented flow with very predictable gas–liquid contacting, reducing the effects of mass transfer as well as facilitating isothermal operation. The system is capable of studying homogeneous catalysis at high temperature and pressure (<350 °C and <100 bar) under continuous flow. By varying the pressure, temperature, and concentrations of both gas and liquid species, it is possible to determine kinetic parameters. Both inline and offline analyses are performed using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy and gas chromatography (GC). The hydroformylation of 1-octene is studied to demonstrate the utility of this microreactor system as a laboratory tool for kinetic measurements. The system is capable of providing both parameter estimation and mechanistic insight. A discussion is also included that explores the types of chemical systems that can be studied practically in microreactors. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200936b [article] Microreactor system for high - pressure continuous flow homogeneous catalysis measurements [texte imprimé] / Jaroslav Keybl, Auteur ; Klavs F. Jensen, Auteur . - 2011 . - pp. 11013–11022. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11013–11022 Mots-clés : Homogeneous catalyst kinetic Résumé : A high-pressure gas–liquid system is presented for determining homogeneous catalyst kinetic parameters. Microreactors enable segmented flow with very predictable gas–liquid contacting, reducing the effects of mass transfer as well as facilitating isothermal operation. The system is capable of studying homogeneous catalysis at high temperature and pressure (<350 °C and <100 bar) under continuous flow. By varying the pressure, temperature, and concentrations of both gas and liquid species, it is possible to determine kinetic parameters. Both inline and offline analyses are performed using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy and gas chromatography (GC). The hydroformylation of 1-octene is studied to demonstrate the utility of this microreactor system as a laboratory tool for kinetic measurements. The system is capable of providing both parameter estimation and mechanistic insight. A discussion is also included that explores the types of chemical systems that can be studied practically in microreactors. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200936b

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