Dry reforming and partial oxidation of natural gas to syngas production

Maciel, Leonardo José Lins; Souza, Aleksándros El Áurens Meira de; Vasconcelos, Solange Maria de; Knoechelmann, Augusto; Abreu, César Augusto Moraes de

doi:10.1016/s0167-2991(07)80176-5

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…The pore volume was 0.38 cm 3 /g and particle porosity 0.71. X-ray diffraction (XRD) identified the presence of gamma and delta alumina, carbon, Ni and NiAl 10 O 16 [11] Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Kinetic evaluation of the tri-reforming process of methane for syngas production

Maciel

Souza

Cavalcanti-Filho

et al. 2010

Reac Kinet Mech Cat

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The conversion of natural gas was carried out via tri-reforming of methane in a fixed bed reactor employing a Ni/c-Al 2 O 3 catalyst. The kinetic evaluations were performed in a temperature range from 923 to 1,123 K under atmospheric pressure. The effects due to water and oxygen addition to the feed of the process were examined in terms of the yields of hydrogen and carbon monoxide. Contributions of the reverse water-gas shift and oxidation reactions were evaluated. At temperatures above 1,000 K, methane and carbon dioxide conversions of 97.35 and 46.75% produced hydrogen and carbon monoxide with yields of 37.35 and 4.99%, respectively. A model was proposed to describe the kinetic behavior of the process considering the proposition of a four step reaction mechanism. The solutions of the equations of the model established predictions in terms of reactant and products concentration evolutions. The model predictions indicated that for operations at 1,123 K and 1.0 bar, with low spatial times (s \ 2.0 kg s/m 3 ), a hydrogen yield as high as 75% was obtained.

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“…The pore volume was 0.38 cm 3 /g and particle porosity 0.71. X-ray diffraction (XRD) identified the presence of gamma and delta alumina, carbon, Ni and NiAl 10 O 16 [11] Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Kinetic evaluation of the tri-reforming process of methane for syngas production

Maciel

Souza

Cavalcanti-Filho

et al. 2010

Reac Kinet Mech Cat

Self Cite

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“…In addition to coal gasification [10,11] and natural gas oxidation [12][13][14], syngas can be efficiently manufactured from renewable dry biomass [15,16]. The catalytic synthesis of ethanol and higher alcohols from syngas is a reliable method of energy and fuel production independent of fossil resources.…”

Section: Introductionmentioning

confidence: 99%

Remarkably efficient CoGa catalyst with uniformly dispersed and trapped structure for ethanol and higher alcohol synthesis from syngas

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2016

Journal of Catalysis

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“…In this context are included the dry reform with carbon dioxide (DRM), the autothermal reform of methane with oxygen and water (ATRM), and the combined reform of methane with three components with oxygen, water, and carbon dioxide (CRM) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the effect on methane stability by the use of new catalysts and equipments improving its conversion, the development of different reform technologies are in perspective. In the present approach, based on proposals for mechanisms and quantifications of the kinetics of alternative reforms [5][6][7] conducted by our research group, their operations were simulated in a fixed bed reactor in the presence of a supported nickel catalyst on alumina. Data obtained in our reseach were applied as the basis for each of the processes, and included the mass balance formulations for the fixed bed reactor.…”

Section: Introductionmentioning

confidence: 99%

Performance of Alternative Methane Reforms Based on Experimental Kinetic Evaluation and Simulation in a Fixed Bed Reactor

et al. 2021

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A comparative evaluation of alternative methane reforming processes as an option to steam reforming was performed by carrying out simulations of operations in a fixed bed reactor with a Ni (4.8 wt.%/γ-Al2O3) catalyst at 1023 K under 1.0 bar. Methane reforms, including processing with carbon dioxide (DRM, CH4/CO2), autothermal reform (ATRM, CH4/H2O/O2), and combined reform (CRM, CH4/CO2/H2O/O2) had their operations predicted based on experimental data developed to represent their kinetic behavior, formalized with mechanisms and parametric quantifications. The performance of fixed bed reactor operations for methane conversions occurred with different reaction rates in the three alternative processes, and comparatively the orders of magnitude were 102, 10−1, and 10−4 in CRM, ATRM, and DRM, respectively. According to each process, the methane conversions were oriented towards the predominant productions of hydrogen or carbon monoxide, indicating the kinetic selectivities of H2, 86.1% and CO, 59.2% in CRM and DRM, respectively. Considering the possibility of catalyst deactivation by carbon deposition, its predicted yields are low due to the slow stages of its production and due to its simultaneous consumption through interactions with O2, CO2, and H2O, reflecting favorably in additional productions of H2 and CO.

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Dry reforming and partial oxidation of natural gas to syngas production

Cited by 7 publications

References 4 publications

Kinetic evaluation of the tri-reforming process of methane for syngas production

Kinetic evaluation of the tri-reforming process of methane for syngas production

Remarkably efficient CoGa catalyst with uniformly dispersed and trapped structure for ethanol and higher alcohol synthesis from syngas

Performance of Alternative Methane Reforms Based on Experimental Kinetic Evaluation and Simulation in a Fixed Bed Reactor

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