Low-carbon production of hydrogen from fossil fuels

Muradov, Nazim

doi:10.1016/b978-1-78242-361-4.00017-0

Cited by 23 publications

(7 citation statements)

References 65 publications

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“…This implies that the thermal energy provided by adiabatic compression heating is insufficient to supply the required reaction energy to drive the SMR endothermic reactions. In conventional tubular reactors, the required heat for the reaction is continuously supplied via a fired heater to maintain a high temperature within the catalytic bed [41,42]. However, in the piston reactor case, during compression, the heating is supplied through the mechanical work of adiabatic compression, which is governed by the piston's geometry and compression ratio.…”

Section: Resultsmentioning

confidence: 99%

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Abousrafa

Katebah

Linke

et al. 2023

Preprint

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Piston reactor technology can enable process intensification for electrical and mechanical power conversion to chemical products. Previous work has investigated hydrogen production via partial oxidation of methane (POM) in piston reactors; however, other routes remain unexplored. This work aims to theoretically evaluate if catalytic steam methane reforming (SMR) and methane autothermal reforming (ATR) constitute promising routes for hydrogen production using piston reactor technology for typical parameters and conditions encountered in automotive internal combustion engines (ICE). Specifically, the aim is to use reactor modeling and consider process design aspects in the early stages of investigation to provide direction and justify the next research and development stages involving experimentation, while eliminating infeasible options from the further expensive analysis. The piston reactor is first modeled using a zero-dimensional thermodynamic single-zone piston model coupled with available steady-state kinetic models for these routes. This model-based analysis shows that the highly endothermic SMR reaction is not feasible at ICE conditions, leading to its elimination from further assessments and studies. Thermal coupling of an endothermic reaction with a side-exothermic reaction is a potential solution to drive thermodynamically limited endothermic reaction routes in the piston reactor. The reactor modeling revealed that operation become feasible by coupling SMR with POM in ATR-type scenarios and achieves process intensification compared to steady-state ATR reactors through a significantly higher hydrogen production per catalyst (287-fold increase) and similar methane conversion between 89% and 97% at significantly lowered intake feed temperature (reduced by 283 K). The implementation of ATR piston reactors into grey and blue hydrogen production process designs is explored to understand overall performance and economy of scale effects. The process design studies reveal that the piston reactor-based processes offer savings of approx. 20% in hydrogen production costs compared to conventional ATR processes considering identical plant sizes and natural gas prices. The hydrogen production study highlights the value of the implemented approach for quickly identifying promising directions for further detailed experimental and modeling studies during early-stage exploration.

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Section: Resultsmentioning

confidence: 99%

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Abousrafa

Katebah

Linke

et al. 2023

Preprint

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“…In order to assess the performance of the MMHFMs synthesized in this work, the optimal fiber identified by the preceding discussions (AG10-R5.14-1000 nm) was compared with other membranes reported by previous studies. N. Muradov [25] pointed out that hydrogen production typically reaches up to 1 million m 3 per day in the plant via the steam methane reformation process, with CO 2 emissions of 0.4 million m 3 per day. A membrane with high permeance and adequate selectivity is needed to satisfy the requirements of reforming gas mixture.…”

Section: The Potential Of Hydrogen Recovery From Either Co 2 or Hydrocarbonsmentioning

confidence: 99%

Highly Permeable Mixed Matrix Hollow Fiber Membrane as a Latent Route for Hydrogen Purification from Hydrocarbons/Carbon Dioxide

2021

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This work reported on the fabrication and investigation of a mixed matrix hollow fiber membrane (MMHFM) by incorporating commercially available alumina particles into a polyetherimide (PEI) polymer matrix. These MMHFMs were prepared by the dry-wet spinning technique. Accordingly, optimizing the spinning parameters, including the air gap distance and flow rate ratio, is key to determining the gas separation performance. However, there are few studies regarding the effect of the filler dimensions. Consequently, three sizes of alumina particles, 20 nm, 30 nm, and 1000 nm, were respectively added into the PEI phase to examine the influence of filler size on gas permeation property. Moreover, the permeation properties of lower hydrocarbons (i.e., ethane and propane) were also measured to evaluate potential for emerging applications. The results indicated the as-synthesized membrane exhibited a remarkable hydrogen permeance of 1065.24 GPU, and relatively high separation factors of 4.53, 5.77, and 5.39 for H2/CO2, H2/C2H6, and H2/C3H8, respectively. This resulted from good compatibility between the larger fillers and the PEI polymer, as well as a reduction in the finger-like voids. Overall, the MMHFM in this work was deemed to be a promising candidate to separate hydrogen from gas streams, based on the comparison of the separation performance against other reported studies.

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“…The conventional thermocatalytic ventures of CO 2 hydrogenation have been rapidly overtaken by potentially more sustainable methods, such as photo-, electro-and photoelectrocatalysis, which avoid the use of H 2 predominantly sourced from steam reforming, and instead take advantage of the abundance and omnipresence of water. [2][3][4] Photocatalysis in particular offers the added benet of utilising the inexhaustible solar energy as the external bias for initiating reactions. This technology is being avidly explored as one of the best solutions to pursue a circular economy because it has the potential to transform CO 2 into value-added products and chemical feedstocks.…”

Section: Introductionmentioning

confidence: 99%

Synergy of nanocrystalline carbon nitride with Cu single atom catalyst leads to selective photocatalytic reduction of CO₂ to methanol

LeMercier,

Thangamuthu,

Kohlrausch

et al. 2024

Sustainable Energy Fuels

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Low-carbon production of hydrogen from fossil fuels

Cited by 23 publications

References 65 publications

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Highly Permeable Mixed Matrix Hollow Fiber Membrane as a Latent Route for Hydrogen Purification from Hydrocarbons/Carbon Dioxide

Synergy of nanocrystalline carbon nitride with Cu single atom catalyst leads to selective photocatalytic reduction of CO₂ to methanol

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Low-carbon production of hydrogen from fossil fuels

Cited by 23 publications

References 65 publications

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Model-based evaluation of piston reactor to produce hydrogen from methane via catalytic SMR and ATR routes

Highly Permeable Mixed Matrix Hollow Fiber Membrane as a Latent Route for Hydrogen Purification from Hydrocarbons/Carbon Dioxide

Synergy of nanocrystalline carbon nitride with Cu single atom catalyst leads to selective photocatalytic reduction of CO2 to methanol

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Synergy of nanocrystalline carbon nitride with Cu single atom catalyst leads to selective photocatalytic reduction of CO₂ to methanol