Steam reforming of methane, ethane, propane, butane, and natural gas over a rhodium-based catalyst

Schädel, B. T.; Duisberg, M.; Deutschmann, Olaf

doi:10.1016/j.cattod.2009.01.008

Cited by 186 publications

(138 citation statements)

References 38 publications

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“…The composition of biogas depends on the biomass source and duration of digestion process. Generally it contains 50-75% CH 4 , 50-25% CO 2 , 0-10% N 2 , and 0-3% H 2 S. Biogas may be combusted to produce electricity or can be converted to synthesis gas by reforming over Rh or Ni catalyst [1,2,3,4]. However, the presence of H 2 S or other sulfur containing compounds is a major problem for reforming of biogas due to its poisoning effect on most transition metals [5].…”

Section: Introductionmentioning

confidence: 99%

“…This work appears to be the first attempt to model sulfur poisoning on Ni catalyst using a detailed kinetic model. The root of the kinetic model is a previously published mechanism for steam reforming of CH 4 on Ni [15]. Additional reactions are incorporated into this mechanism to account for sulfur adsorption, desorption, disproportionation, and recombination reactions.…”

Section: Introductionmentioning

confidence: 99%

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A detailed kinetic model for biogas steam reforming on Ni and catalyst deactivation due to sulfur poisoning

Appari¹,

Janardhanan²,

Bauri³

et al. 2014

Applied Catalysis A: General

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This paper deals with the development and validation of a detailed kinetic model for steam reforming of biogas with and without H 2 S. The model has 68 reactions among 8 gasphase species and 18 surface adsorbed species including the catalytic surface. The activation energies for various reactions are calculated based on unity bond index-quadratic exponential potential (UBI-QEP) method. The whole mechanism is made thermodynamically consistent by using a previously published algorithm. Sensitivity analysis is carried out to understand the influence of reaction parameters on surface coverage of sulfur. The parameters describing sticking and desorption reactions of H 2 S are the most sensitive ones for the formation of adsorbed sulfur. The mechanism is validated in the temperature range of 873-1200 K for biogas free from H 2 S and 973-1173 K for biogas containing 20-108 ppm H 2 S. The model predicts that during the initial stages of poisoning sulfur coverages are high near the reactor inlet; however, as the reaction proceeds further sulfur coverages increase towards the reactor exit. In the absence of sulfur CO and H atoms are the dominant surface adsorbed species. High temperature operation can significantly mitigate sulfur adsorption and hence the saturation sulfur coverages are lower compared to low temperature operation. Low temperature operation can lead to full deactivation of the catalyst. The model predicts saturation coverages that are comparable to experimental observation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A detailed kinetic model for biogas steam reforming on Ni and catalyst deactivation due to sulfur poisoning

Appari¹,

Janardhanan²,

Bauri³

et al. 2014

Applied Catalysis A: General

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“…Methane, as the main component of natural gas, is one of the most studied molecules for reforming reactions. However, several studies have been centered on processing and valorizing a number of higher alkanes such as ethane [125,126], propane [127][128][129][130], n-butane [131][132][133] which are present in natural gas, but also generated in engine burners. Among reforming reaction, the steam reforming (SR) of higher alkanes is probably the most common and cost-effective industrial process for H2 generation.…”

Section: From Volatile Organic Compounds To Syngas and Hydrogenmentioning

confidence: 99%

“…Rhodium based materials have been reported as highly active catalysts for steam reforming of alkane molecules at low temperatures [131]. Schädel et al [125] studied the steam reforming of methane, ethane, propane, butane, separately, over rhodium-based monolithic honeycomb catalyst, and found that ethane, propane, and butane are converted at much lower temperatures than methane. For industrial application, Ni based materials are more studied due to their reasonable activity and significantly lower costs [133][134][135].…”

Section: From Volatile Organic Compounds To Syngas and Hydrogenmentioning

confidence: 99%

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

et al. 2015

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Abstract:The treatment of volatile organic compounds (VOC) emissions is a necessity of today. The catalytic treatment has already proven to be environmentally and economically sound technology for the total oxidation of the VOCs. However, in certain cases, it may also become economical to utilize these emissions in some profitable way. Currently, the most common way to utilize the VOC emissions is their use in energy production. However, interesting possibilities are arising from the usage of VOCs in hydrogen and syngas production. Production of chemicals from VOC emissions is still mainly at the research stage. However, few commercial examples exist. This review will summarize the commercially existing VOC utilization possibilities, present the utilization applications that are in the research stage and introduce some novel ideas related to the catalytic utilization possibilities of the VOC emissions. In general, there exist a vast number of possibilities for VOC OPEN ACCESSCatalysts 2015, 5 1093 utilization via different catalytic processes, which creates also a good research potential for the future.

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“…In this work we are considering Rh and Ni catalyst for reforming and Pt catalyst for combustion. The elementary step surface reaction mechanism for steam reforming of methane over Rh consists of 44 reactions among six gas-phase species and 12 surface adsorbed species (Schädel et al, 2009). Whereas the elementary step surface reaction mechanism for steam reforming of methane over Ni consists of 42 reactions among six gas-phase species and 12 surface adsorbed species (Janardhanan and Deutschmann, 2006).…”

Section: Elementary Kineticsmentioning

confidence: 99%

Modeling process intensified catalytic plate reactor for synthesis gas production

Lakhete

Janardhanan

2014

Chemical Engineering Science

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This paper presents numerical study of co and counter flow arrangements for catalytic plate reactors (CPR). CH 4 steam reforming coupled with CH 4 oxidation is simulated using detailed surface reaction mechanisms. Effect of inlet velocities to the reforming channel, oxidation channel, and material properties of the plate on the resulting plate temperature and CH 4 conversions is studied. The simulation results agree very well with an industrial scale reformer unit and calculations are further carried out to evaluate the number of CPRs and stacks required to replace and industrial unit.

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Steam reforming of methane, ethane, propane, butane, and natural gas over a rhodium-based catalyst

Cited by 186 publications

References 38 publications

A detailed kinetic model for biogas steam reforming on Ni and catalyst deactivation due to sulfur poisoning

A detailed kinetic model for biogas steam reforming on Ni and catalyst deactivation due to sulfur poisoning

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

Modeling process intensified catalytic plate reactor for synthesis gas production

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