Steam reforming of hexadecane over a Rh/CeO2 catalyst in microchannels: Experimental and numerical investigation

Thormann, J.; Maier, Lubow; Pfeifer, Peter; Kunz, Ulrich; Deutschmann, Olaf; Schubert, K. R.

doi:10.1016/j.ijhydene.2009.04.031

Cited by 86 publications

(70 citation statements)

References 37 publications

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“…The most interesting aspect of biogas fueled high temperature fuel cell system for power generation is the carbon neutral cycle. Although high temperature fuel cells such as SOFC can operate on hydrocarbon fuels without upstream fuel processing [7], in most cases the target fuel is either fully or partially reformed in an upstream fuel processor [8]. In an SOFC plant the fuel processor is connected to the SOFC stack with appropriate heat exchange and steam mixing.…”

Section: Introductionmentioning

confidence: 99%

Deactivation and regeneration of Ni catalyst during steam reforming of model biogas: An experimental investigation

Appari

Janardhanan

Bauri

et al. 2014

International Journal of Hydrogen Energy

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This paper presents detailed study of biogas reforming. Model biogas with different levels of H 2 S is subjected to reforming reaction over supported Ni catalyst in a fixed bed reactor at 700 o C and 800 o C. In order to understand the poisoning effects of H 2 S the reactions have been initially carried out without H 2 S in the feed stream. Three different H 2 S concentrations (20, 50 and 100 ppm) have been considered in the study. The H 2 O to CH 4 ratio is maintained in such as way that CO 2 also participates in the reforming reaction. After performing the poisoning studies, regeneration of the catalyst has been studied using three different techniques i) removal of H 2 S from the feed stream ii) temperature enhancement and iii) steam treatment. Poisoning at low temperature is not recoverable just by removal of H 2 S from the feed stream. However, poisoning at high temperature is easily reversed just by removal of H 2 S from the feed stream. Unlike some previous reports [1,2], catalyst regeneration is achieved in shorter time frames for all the regeneration techniques attempted.

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Section: Introductionmentioning

confidence: 99%

Deactivation and regeneration of Ni catalyst during steam reforming of model biogas: An experimental investigation

Appari

Janardhanan

Bauri

et al. 2014

International Journal of Hydrogen Energy

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“…(3,5,8) depend on temperature and mixture composition. They can be derived from the transport coefficients of the individual species and the mixture composition by applying empirical approximations [34,35,37].…”

Section: Governing Equations For Multi-componentmentioning

confidence: 99%

“…(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11) can principally be used in the numerical simulation of laminar as well as turbulent flow fields; the so-called Direct Numerical Simulations, DNS. In practice, however, the solution of the Navier-Stokes equations for turbulent flows demands a prohibitive amount of computational time due to the huge number of grid points needed to resolve the small scales of turbulence.…”

Section: Modeling Of the Interactions 275mentioning

confidence: 99%

“…Catalytic monoliths can serve as an example. They are frequently used for the reduction of pollutant emissions from automobiles [1], selective oxidation [2][3][4] and reforming of hydrocarbons [5,6], and combustion of natural gas [7][8][9]. Figure 1 illustrates the physics and chemistry in a catalytic combustion monolith that glows at a temperature of about 1,300 K due to the exothermic oxidation reactions.…”

Section: Introductionmentioning

confidence: 99%

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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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“…(16) coupled with boundary condition Eqs. (19), (22) and (23). The electric potential distribution in the oxygen ion conductor was computed, as show in the next section.…”

Section: 2mentioning

confidence: 99%

A kinetic model for analyzing partial oxidation reforming of heavy hydrocarbon over a novel self-sustained electrochemical promotion catalyst

Huang

Wang

Liu

et al. 2012

International Journal of Hydrogen Energy

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Steam reforming of hexadecane over a Rh/CeO2 catalyst in microchannels: Experimental and numerical investigation

Cited by 86 publications

References 37 publications

Deactivation and regeneration of Ni catalyst during steam reforming of model biogas: An experimental investigation

Deactivation and regeneration of Ni catalyst during steam reforming of model biogas: An experimental investigation

Modeling of the Interactions Between Catalytic Surfaces and Gas-Phase

A kinetic model for analyzing partial oxidation reforming of heavy hydrocarbon over a novel self-sustained electrochemical promotion catalyst

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