Autothermal reforming of heavy-hydrocarbon fuels by morphology controlled perovskite catalysts using carbon templates

Yukwon Jeon, Chanmin Lee, Junki Rhee, Gicheon Lee, Jae ha Myung, Myunggeun Park, Joo Il Park, Hisahiro Einaga, Yong-Gun Shul

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A novel synthesis of morphology-controlled perovskite networked with LaCr0.8Ru0.2O3 nanoparticles was introduced using activated carbons as sacrificial templates. These catalysts were used for the hydrogen production by heavy-hydrocarbon autothermal reforming. To investigate the effect of the carbon templates, morphology-controlled perovskites using activated carbons and a non-templated catalyst were prepared to determine how carbon templates influence the chemical structure of the perovskite. The carbon templates produced a crystalline structure with the well incorporation of Ru under mild calcination conditions. The morphology of the hollow fibers provided a higher specific surface area than that of the porous grain catalyst with a similar average particle size (∼80 nm). It was found that the hollow fibers showed a unique pore structure with large macropores from 1 to 100 μm, which might offer a higher surface area and enhanced mass transfer of the reactants. This provided a higher activation energy for H2 production than the porous grain and non-templated catalysts during the autothermal reforming of heavy hydrocarbons. As a result, the fibrous feature and well-defined chemical structure were crucial factors when cracking the hydrocarbon chain. The hollow fiber catalyst showed high reforming efficiency for H2 production (>65 mol%) from heavy-hydrocarbon fuels during long-term experiments, featuring substantial durability with low carbon deposition and no structural changes.

Original languageEnglish
Pages (from-to)446-456
Number of pages11
JournalFuel
Volume187
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Reforming reactions
Hydrocarbons
Perovskite
Carbon
Catalysts
Activated carbon
Fibers
Hydrogen production
Pore structure
Specific surface area
Calcination
Durability
Mass transfer
Activation energy
Particle size
perovskite
Nanoparticles
Crystalline materials
Experiments

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Jeon, Yukwon ; Lee, Chanmin ; Rhee, Junki ; Lee, Gicheon ; Myung, Jae ha ; Park, Myunggeun ; Park, Joo Il ; Einaga, Hisahiro ; Shul, Yong-Gun. / Autothermal reforming of heavy-hydrocarbon fuels by morphology controlled perovskite catalysts using carbon templates. In: Fuel. 2017 ; Vol. 187. pp. 446-456.
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abstract = "A novel synthesis of morphology-controlled perovskite networked with LaCr0.8Ru0.2O3 nanoparticles was introduced using activated carbons as sacrificial templates. These catalysts were used for the hydrogen production by heavy-hydrocarbon autothermal reforming. To investigate the effect of the carbon templates, morphology-controlled perovskites using activated carbons and a non-templated catalyst were prepared to determine how carbon templates influence the chemical structure of the perovskite. The carbon templates produced a crystalline structure with the well incorporation of Ru under mild calcination conditions. The morphology of the hollow fibers provided a higher specific surface area than that of the porous grain catalyst with a similar average particle size (∼80 nm). It was found that the hollow fibers showed a unique pore structure with large macropores from 1 to 100 μm, which might offer a higher surface area and enhanced mass transfer of the reactants. This provided a higher activation energy for H2 production than the porous grain and non-templated catalysts during the autothermal reforming of heavy hydrocarbons. As a result, the fibrous feature and well-defined chemical structure were crucial factors when cracking the hydrocarbon chain. The hollow fiber catalyst showed high reforming efficiency for H2 production (>65 mol{\%}) from heavy-hydrocarbon fuels during long-term experiments, featuring substantial durability with low carbon deposition and no structural changes.",
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Autothermal reforming of heavy-hydrocarbon fuels by morphology controlled perovskite catalysts using carbon templates. / Jeon, Yukwon; Lee, Chanmin; Rhee, Junki; Lee, Gicheon; Myung, Jae ha; Park, Myunggeun; Park, Joo Il; Einaga, Hisahiro; Shul, Yong-Gun.

In: Fuel, Vol. 187, 01.01.2017, p. 446-456.

Research output: Contribution to journalArticle

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AU - Jeon, Yukwon

AU - Lee, Chanmin

AU - Rhee, Junki

AU - Lee, Gicheon

AU - Myung, Jae ha

AU - Park, Myunggeun

AU - Park, Joo Il

AU - Einaga, Hisahiro

AU - Shul, Yong-Gun

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AB - A novel synthesis of morphology-controlled perovskite networked with LaCr0.8Ru0.2O3 nanoparticles was introduced using activated carbons as sacrificial templates. These catalysts were used for the hydrogen production by heavy-hydrocarbon autothermal reforming. To investigate the effect of the carbon templates, morphology-controlled perovskites using activated carbons and a non-templated catalyst were prepared to determine how carbon templates influence the chemical structure of the perovskite. The carbon templates produced a crystalline structure with the well incorporation of Ru under mild calcination conditions. The morphology of the hollow fibers provided a higher specific surface area than that of the porous grain catalyst with a similar average particle size (∼80 nm). It was found that the hollow fibers showed a unique pore structure with large macropores from 1 to 100 μm, which might offer a higher surface area and enhanced mass transfer of the reactants. This provided a higher activation energy for H2 production than the porous grain and non-templated catalysts during the autothermal reforming of heavy hydrocarbons. As a result, the fibrous feature and well-defined chemical structure were crucial factors when cracking the hydrocarbon chain. The hollow fiber catalyst showed high reforming efficiency for H2 production (>65 mol%) from heavy-hydrocarbon fuels during long-term experiments, featuring substantial durability with low carbon deposition and no structural changes.

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