Dynamic modelling of heterogeneous catalytic reactions—II. Experimental results— oxydehydrogenation of isobutyric aldehyde to methacrolein

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Abstract

Application of theoretical results obtained in Part I is demonstrated by dynamic modelling of the complex heterogeneous catalytic oxidehydrogenation of isobutyric aldehyde to methacrolein. The heteropoly acid H5Mo10V2PO40 is used as catalyst. Reactor inlet concentration step changes are realized by exchanging two feed streams of different composition with solenoid valves. Quasi-continuous measurement of reactant partial pressure transients is accomplished by mass spectroscopy. Based on dynamic experiments, a reaction scheme is proposed and estimation of kinetic parameters of the main reaction using an Eley-Rideal type rate equation is carried out. Limitations of dynamic modelling are discussed.

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    Oxidative Dehydrierung von Isobutyraldehyd und Isobuttersäure zu Methacrolein bzw. Methacrylsäure

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