Steam reforming of methane to hydrogen over Ni-based metal monolith catalysts

Wu, Pingyi; Li, Xiujin; Ji, Shengfu; Lang, Bao; Habimana, Fabien; Li, Chengyue

doi:10.1016/j.cattod.2009.01.031

Cited by 63 publications

(24 citation statements)

References 28 publications

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“…Finally, carbon deposition also increases with pressure drop, as shown by equilibrium calculations of methane cracking (the main coke‐forming reaction in CH 4 reforming) in Figure S1 (see the Supporting Information). For these reasons, it has been seriously considered that a monolith‐type catalyst would minimize the pressure drop, even in the presence of a considerable degree of coking …”

Section: Figurementioning

confidence: 99%

Ultrapermeable Nickel–Cobalt–Manganese/Alumina Inverse Opal as a Coke‐Tolerant and Pressure‐Drop‐Free Catalyst for the Dry Reforming of Methane

et al. 2018

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An inverse opal‐structured Ni‐Co‐Mn/Al2O3 catalyst with ultrahigh permeability was prepared by a sol–gel method templated by poly(methyl methacrylate) opal‐structured nanospheres. This catalyst exhibited excellent coke tolerance and a negligible reactor pressure drop in the dry reforming of methane. The highly permeable, unique macroporous structure allowed facile mass transport, which not only reduced the amount of coke deposition but also enhanced coke tolerance. Therefore, invariant CO2/CH4 conversions despite substantial coke formation were observed.

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Section: Figurementioning

confidence: 99%

Ultrapermeable Nickel–Cobalt–Manganese/Alumina Inverse Opal as a Coke‐Tolerant and Pressure‐Drop‐Free Catalyst for the Dry Reforming of Methane

et al. 2018

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“…Thus, the Ni-based as methane reforming catalyst was shown to rapidly deactivate due to coking and metal sintering, since nickel particles agglomerate above 600 C [33]. Moreover the activity and stability of Ni-based catalysts are affected by several factors such as the dispersion of Ni particles [12], the chemical interaction between the Ni particles and the support as well as the conditions for the catalysts preparation and pretreatment [34,35].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen and syngas production by methane dry reforming on SBA-15 supported nickel catalysts: On the effect of promotion by Ce0.75Zr0.25O2 mixed oxide

Albarazi

Beaunier

Costa

2013

International Journal of Hydrogen Energy

114

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“…Solid feedstocks, such as coal and biomass, are converted in a gasifier, of which various types have been already in industrial applications [7][8][9][10]. Different gasification processes and technologies have also been discussed in the literature [4,[11][12][13][14][15][16][17][18][19][20][21]. Natural gas, on the other hand, is converted to syngas in a reformer using either partial oxidation (POX), steam methane reforming (SMR) or autothermal reforming (ATR).…”

Section: Introductionmentioning

confidence: 99%

Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review

Basha

Sehabiague

Abdel‐Wahab

et al. 2015

International Journal of Chemical Reactor Engineering

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This paper presents an extensive review of the kinetics, hydrodynamics, mass transfer, heat transfer and mathematical as well as computational fluid dynamics (CFD) modeling of Low-Temperature Tropsch Synthesis (LTFT) synthesis in Slurry Bubble Column Reactors (SBCRs), with the aim of identifying potential research and development areas in this particular field. The kinetic expressions developed for F-T synthesis over iron and cobalt catalysts along with the water gas shift (WGS) reactions are summarized and compared. The experimental data and empirical correlations to predict the hydrodynamics (gas holdup, Sauter mean bubble diameter, and bubble rise velocity), mass transfer coefficients and heat transfer coefficients are presented. The effects of various operating variables, including pressure, temperature, gas velocity, catalyst concentration, reactor geometry, and reactor internals on the hydrodynamic and transport parameters as well as the performance of SBCRs are discussed. Additionally, modeling efforts of SBCRs, using axial dispersion models (ADM), multiple cell recirculation models (MCCM) and computational fluid dynamics (CFD), are addressed. This review revealed the following:(1) Numerous F-T and WGS kinetic rate expressions are available for cobalt and iron catalysts and one must be careful in selecting the appropriate expressions for LTFT. Iron catalyst suffers from severe attrition and subsequent deactivation in SBCRs and accordingly building a costly catalyst manufacturing facility onsite is required to maintain a steady operation of the F-T reactor;(2) Experimental data on the hydrodynamic and transport parameters at high pressures and temperatures, typical to those of actual F-T synthesis, remain scanty when compared with the plethora of studies conducted using air-water systems in small reactors at ambient conditions; (3) Several empirical correlations for predicting the hydrodynamic and mass as well heat transfer parameters are available and one should select those which consider the reactor diameter, gas mixtures and the potential foamability of the F-T liquids; (4) The effect of cooling internals configuration and sparger design on the hydrodynamic and transport parameters, local turbulence, mixing and catalyst attrition are yet to be seriously addressed; (5) The impact of operating variables on the hydrodynamic and transport parameters as well as the overall performance of the SBCRs should be investigated using actual F-T fluid-solid systems under typical pressures and temperatures using a large-scale reactor ( > 0.15 m ID) in the presence of gas spargers and cooling internals; (6) Significant efforts are still required in order to advance CFD modeling of SBCRs, particularly those pertaining to the relevant closure models, such as drag, lift and turbulence. Also, cooling internals configuration and the design as well as orientation of gas spargers should be accounted for in the CFD modeling; and (7) Proper validations of the CFD formulations using actual systems for F-T SBCR are needed.

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Steam reforming of methane to hydrogen over Ni-based metal monolith catalysts

Cited by 63 publications

References 28 publications

Ultrapermeable Nickel–Cobalt–Manganese/Alumina Inverse Opal as a Coke‐Tolerant and Pressure‐Drop‐Free Catalyst for the Dry Reforming of Methane

Ultrapermeable Nickel–Cobalt–Manganese/Alumina Inverse Opal as a Coke‐Tolerant and Pressure‐Drop‐Free Catalyst for the Dry Reforming of Methane

Hydrogen and syngas production by methane dry reforming on SBA-15 supported nickel catalysts: On the effect of promotion by Ce0.75Zr0.25O2 mixed oxide

Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review

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