An experimental reactor to study the intrinsic kinetics of catalytic partial oxidation of methane in the presence of heat-transport limitations

Smet, C.R.H. de; Croon, M.H.J.M. de; Berger, Rob J.; Marin, Guy; Schouten, J.C.

doi:10.1016/s0926-860x(99)00181-7

Cited by 44 publications

(21 citation statements)

References 17 publications

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“…To study the intrinsic kinetics of the CPO reaction in the presence of heat-transport lim-Ž . itations, de Smet et al 1999 developed an experimental reactor, containing a single Pt gauze catalyst. Heat-transport limitations were taken into account explicitly in this reactor, since the catalyst temperature was measured directly, using a thermocouple spot-welded to the Pt gauze.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, taking into ac-Ž . count the relevant transport phenomena, de Smet et al 1999 developed a reactor model to obtain the intrinsic kinetic parameters of the CPO reaction on a Pt gauze.…”

Section: Introductionmentioning

confidence: 99%

“…The experimental data, together with the reactor model presented Ž . by de Smet et al 1999 , are used to estimate the corresponding intrinsic kinetic parameters. The objective of the present study is not to provide a fully comprehensive kinetic mechanism that can account for synthesis gas production.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics for the partial oxidation of methane on a Pt gauze at low conversions

et al. 2000

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetics for the partial oxidation of methane on a Pt gauze at low conversions

et al. 2000

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“…Catalytic partial oxidation (CPOX) of light alkanes was also studied in wire gauze reactors. De Smet et al [125] studied CPOX of methane with oxygen at atmospheric pressure in a continuous-flow reactor containing a single Pt metal gauze. They used 3D computations of simultaneous heat and mass transfer in case of a simple surface reaction on the gauze catalyst to derive intrinsic kinetics.…”

Section: Chemical Release Of Heat and Heat Transport: Ammonia Oxidatimentioning

confidence: 99%

Modeling of the Interactions Between Catalytic Surfaces and Gas-Phase

Deutschmann

2014

Catal Lett

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The catalytic surface interacts with the gasphase by a variety of chemical and physical processes. Hence, optimization of design and operation conditions of catalytic reactors do not only require the understanding of the catalytic reaction sequence but also its coupling with mass and heat transport and potential homogeneous reactions. The chemical, thermal, and mass-transport interactions between the catalytic surface and the gas-phase are discussed in terms of the individual and combined interactions. The state-of-the-art modelling of reactive flows and its coupling with the catalytic surface is summarized. The interactions are illustrated by a number of examples such as reforming of hydrocarbons, catalytic combustion, exhaust-gas after-treatment, each focusing on a special aspect of catalyst-gas interactions. The potentials and limitations of the numerical simulations will be discussed including experimental techniques for model validation.

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“…For similar geometries, Churchill and Bernstein proposed an empirical correlations to estimate the gassolid heat transfer coe cient (Churchill & Bernstein, 1977;deSmet, deCroon, Berger, Marin, & Schouten, 1999)…”

Section: Determination Of Gas-solid Heat Transfer Coe Cientmentioning

confidence: 99%

Mathematical modelling of the unsteady-state oxidation of nickel gauze catalysts

Monnerat

Kiwi‐Minsker

Renken

2003

Chemical Engineering Science

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The oxidation of nickel gauze catalysts by O2 was investigated by transient response methods. Qualitative description of the experimental transient responses have shown that the oxidation of metallic nickel proceeds in two stages. The ÿrst step is a fast dissociation of gaseous oxygen on the catalytic surface, followed by oxygen di usion from the surface into the bulk. This slow second step explains the long tailing observed from the experimental transient responses. Furthermore, a rise of temperature was observed during the nickel oxidation. A kinetic model has been developed on the basis of the experimental results in order to provide quantitative information about this reaction. For nickel gauze oxidation, a non-isothermal model combining the subsurface oxygen di usion with an exponential distribution for the activity of surface sites gave a good agreement with experimental transient data. As a result, the activation energies and the pre-exponential factors of the rate constants as well as the characteristic oxygen di usion times were determined. ?

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An experimental reactor to study the intrinsic kinetics of catalytic partial oxidation of methane in the presence of heat-transport limitations

Cited by 44 publications

References 17 publications

Kinetics for the partial oxidation of methane on a Pt gauze at low conversions

Kinetics for the partial oxidation of methane on a Pt gauze at low conversions

Modeling of the Interactions Between Catalytic Surfaces and Gas-Phase

Mathematical modelling of the unsteady-state oxidation of nickel gauze catalysts

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