Determination of kinetic parameters for complex heterogeneous catalytic reactions by numerical evaluation of TAP experiments

Abstract A numerical method is introduced for deriving kinetic parameters by evaluating responses to transient concentration inputs to a catalytic fixed-bed reactor under vacuum conditions (TAP). Complex reaction networks without restrictions regarding the number of reaction steps and the reaction orders are investigated. The method was successfully applied for the estimation of rate constants of parallel and consecutive surface reactions in the oxidative conversion of methane to syngas over a magnesia-supported Pt catalyst.

[1]  G. Emig,et al.  Improvement of selectivity with a two-step process for the oxidation of isobutyric acid , 1996 .

[2]  M. Haruta,et al.  Oxidation of methane to formaldehyde over Fe SiO 2 and Sn?W mixed oxides , 1996 .

[3]  Richard F. Sincovec,et al.  Software for Nonlinear Partial Differential Equations , 1975, TOMS.

[4]  D. Wolf,et al.  Partial oxidation of methane to synthesis gas over PtMgO. Kinetics of surface processes , 1996 .

[5]  Catalytic partial oxidation of methane to synthesis gas-catalysis and reaction engineering , 1997 .

[6]  Jerry R. Ebner,et al.  Temporal Analysis of Products (TAP)—A Unique Catalyst Evaluation System with Submillisecond Time Resolution , 1988 .

[7]  Gilbert F. Froment,et al.  Transient Kinetics from the Tap Reactor System: Application to the Oxidation of Propylene to Acrolein , 1995 .

[8]  X. Jiang,et al.  Comparison of Partial Oxidation and Steam-CO2Mixed Reformingof CH4to Syngas on MgO-Supported Metals , 1996 .

[9]  C. Mirodatos,et al.  Methane reforming reaction with carbon dioxide over Ni/SiO2 Catalyst. I. Deactivation studies , 1996 .

[10]  F. Kapteijn,et al.  Mathematical treatment of transient kinetic data: Combination of parameter estimation with solving the related partial differential equations , 1997 .

[11]  J. Lauterbach,et al.  Subsurface oxygen on Pt(100) : kinetics of the transition from chemisorbed to subsurface state and its reaction with CO, H2 and O2 , 1994 .

[12]  Yves Schuurman,et al.  TAP-2: An interrogative kinetics approach , 1997 .

[13]  C. Mirodatos How transient kinetics may unravel methane activation mechanisms. , 1998 .

[14]  Manfred Baerns,et al.  Modeling and Simulation of Transient Adsorption and Reaction in Vacuum Using the Temporal Analysis of Products Reactor , 1996 .

[15]  P. Mills,et al.  New method for studying the pyrolysis of VPE/CVD precursors under vacuum conditions. Application to trimethylantimony and tetramethyltin , 1992 .

[16]  D. Wolf,et al.  Estimating rate constants of heterogeneous catalytic reactions without supposition of rate determining surface steps — an application of a genetic algorithm , 1997 .

[17]  Milorad P. Dudukovic,et al.  Modeling of Pulsed Gas Transport Effects in the TAP Reactor System , 1994 .

[18]  Gerhart Eigenberger,et al.  Katalytische Abluftreinigung : verfahrenstechnische Aufgaben und neue Lösungen , 1991 .

[19]  Klaus Golbig,et al.  Selective synthesis of maleic anhydride by spatial separation of n-butane oxidation and catalyst reoxidation , 1997 .

[20]  Gbmm Guy Marin,et al.  An investigation on the reaction mechanism for the partial oxidation of methane to synthesis gas over platinum , 1995 .

[21]  Alexis T. Bell,et al.  The characterization of carbonaceous species on ruthenium catalysts with 13C nuclear magnetic resonance spectroscopy , 1985 .