Kinetics of low-temperature steam reforming of propane in a methane excess on a Ni-based catalyst

Усков, С. И.; Enikeeva, L. V.; Потемкин, Д.И.; Belyaev, V. D.; Snytnikov, P.V.; Gubaydullin, I. M.; Кириллов, В. А.; Sobyanin, V. A.

doi:10.1134/s2070050417020118

Cited by 27 publications

(8 citation statements)

References 7 publications

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“…Kinetics of propane LTSC was discussed in detail in our previous work . It has been shown that first‐order kinetics with respect to propane can be applied.…”

Section: Resultsmentioning

confidence: 99%

“…The experiments were carried out using an industrial Ni catalyst of carbon oxides methanation NIAP‐07‐05 produced by “NIAP‐Katalizator” (Novomoskovsk, Russia); the composition of the catalyst was as follows (wt%): 38 NiO, 12 Cr 2 O 3 , and 50 Al 2 O 3 . NIAP‐07‐05 was used in our previous works, and its specific Ni surface area was 3.3 m 2 /g (according to the CO chemisorption measurements). The duration of each catalytic experiment was approximately 10 h. After the experiments on the LTSC of a propane‐butane‐methane mixture, the catalyst was tested for carbon depositions by temperature‐programmed oxidation and no carbon was found.…”

Section: Methodsmentioning

confidence: 99%

“…

E_{ref}^{false(n false)}

for propane ( n = 3) was taken from Ref. and

E_{ref}^{false(n false)}

for butane ( n = 4) was estimated in this work.

E_{hyd}^{false(n false)}

for both propane and butane hydrogenolysis were adjusted to 50.0 kJ/mol to better fit experimental data.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, there is a need for alternative methods for on‐site processing of flare gas. Low‐temperature steam conversion (LTSC) of C 2+ ‐hydrocarbons into methane‐rich gas is considered as one of the promising alternatives. The process is carried out at a temperature of 200‐350°C and low steam to carbon ratio (H 2 O/C C2+ mol.…”

Section: Introductionmentioning

confidence: 99%

“…Because of a considerable variety in flare gas composition, kinetic modeling of the LTSC is required to find optimal operating conditions of the process. Previously, we introduced a simple two‐step macrokinetic model for the LTSC of a binary propane‐methane mixture . The model included the irreversible reaction of propane steam reforming to CO 2 and H 2 followed by quasi‐equilibrium CO 2 methanation.…”

Section: Introductionmentioning

confidence: 99%

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Three‐step macrokinetic model of butane and propane steam conversion to methane‐rich gas

Усков

Шигаров

Потемкин

et al. 2019

Int J of Chemical Kinetics

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Low‐temperature steam conversion (LTSC) of a methane‐butane mixture (95% methane and 5% butane) into a methane‐rich gas over an industrial Ni‐based catalyst has been studied with the following reaction conditions: temperature 200–320°C, pressure 1 bar, gas hour space velocity 1200–3600 h–1, and steam to carbon ratio 0.64. A three‐step macrokinetic model has been suggested based on the kinetic parameters found. The model includes the following reactions: (1) irreversible steam reforming; (2) CO2 methanation, which occurs in a quasi‐equilibrium mode at temperatures above 260°C; (3) hydrogenolysis of propane and butane, which is essential at temperatures below 260°C. Steam reforming was shown to limit the overall reaction rate, whereas hydrogenolysis and CO2 methanation determined the product distribution in low‐ and high‐temperature regions, respectively. Temperature dependencies of the product distribution for the LTSC of a model ternary methane‐propane‐butane mixture (85% methane, 10% propane, and 5% butane) have been successfully simulated using the three‐step model suggested.

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“…Kinetics of propane LTSC was discussed in detail in our previous work . It has been shown that first‐order kinetics with respect to propane can be applied.…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…