Catalytic clean-up of gasification gas with precious metal catalysts

A novel catalytic reformer development

Hanne Rönkkönen (Corresponding Author), Pekka Simell, Matti Reinikainen, Outi Krause, Marita Veringa Niemelä

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Abstract

Several precious metal catalysts were prepared on modified zirconia and tested for the selective catalytic clean-up of the gasification gas. The activity of the precious metal catalysts were compared to that of the modified zirconia supported nickel catalyst and to the support. The activities of the catalysts were tested in a monolithic form in a quartz laboratory reactor at temperatures of 600–900 °C under atmospheric pressure using synthetic sulfur containing gas mixture. In addition, the stability of the Ni and Rh catalysts was examined by measuring the activities at 800 °C for 10 h using sulfur containing gas. The simulated gas contained CO, CO2, CH4, C2H4, H2, N2, H2O, H2S, NH3 and a tar model compound, i.e. a mixture of naphthalene and toluene. The addition of metal on the support promoted the activity in tar model compound decomposition only at the temperature range of 850–900 °C. The order of activity was Rh ≈ Ni > Pd > Ir > Ru > Pt. Almost complete tar model compound conversion was achieved with Rh, as well as with Ni, at 900 °C. At lower temperatures, the support showed higher activity in tar model compound decomposition compared to the metal/support catalysts tested. Only Ni and Ru showed moderate activity in ammonia decomposition. In regard to sulfur tolerance at 800 °C, Rh was activated during the 10 h experiment while the activity of Ni decreased. The performance of both was restored after the overnight N2 flush and the conversion of the tar model compound was higher for Rh (64%) than for Ni (46%).
Original languageEnglish
Pages (from-to)3272-3277
Number of pages6
JournalFuel
Volume89
Issue number11
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

Tars
Tar
Precious metals
Gasification
Gases
Catalysts
Sulfur
Decomposition
Catalyst supports
Zirconia
Metals
Quartz
Toluene
Carbon Monoxide
Naphthalene
Nickel
Ammonia
Gas mixtures
Temperature
Atmospheric pressure

Keywords

  • Zirconia
  • Precious metal catalyst
  • Tar
  • Ammonia
  • Gas clean-up

Cite this

Rönkkönen, Hanne ; Simell, Pekka ; Reinikainen, Matti ; Krause, Outi ; Veringa Niemelä, Marita. / Catalytic clean-up of gasification gas with precious metal catalysts : A novel catalytic reformer development. In: Fuel. 2010 ; Vol. 89, No. 11. pp. 3272-3277.
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title = "Catalytic clean-up of gasification gas with precious metal catalysts: A novel catalytic reformer development",
abstract = "Several precious metal catalysts were prepared on modified zirconia and tested for the selective catalytic clean-up of the gasification gas. The activity of the precious metal catalysts were compared to that of the modified zirconia supported nickel catalyst and to the support. The activities of the catalysts were tested in a monolithic form in a quartz laboratory reactor at temperatures of 600–900 °C under atmospheric pressure using synthetic sulfur containing gas mixture. In addition, the stability of the Ni and Rh catalysts was examined by measuring the activities at 800 °C for 10 h using sulfur containing gas. The simulated gas contained CO, CO2, CH4, C2H4, H2, N2, H2O, H2S, NH3 and a tar model compound, i.e. a mixture of naphthalene and toluene. The addition of metal on the support promoted the activity in tar model compound decomposition only at the temperature range of 850–900 °C. The order of activity was Rh ≈ Ni > Pd > Ir > Ru > Pt. Almost complete tar model compound conversion was achieved with Rh, as well as with Ni, at 900 °C. At lower temperatures, the support showed higher activity in tar model compound decomposition compared to the metal/support catalysts tested. Only Ni and Ru showed moderate activity in ammonia decomposition. In regard to sulfur tolerance at 800 °C, Rh was activated during the 10 h experiment while the activity of Ni decreased. The performance of both was restored after the overnight N2 flush and the conversion of the tar model compound was higher for Rh (64{\%}) than for Ni (46{\%}).",
keywords = "Zirconia, Precious metal catalyst, Tar, Ammonia, Gas clean-up",
author = "Hanne R{\"o}nkk{\"o}nen and Pekka Simell and Matti Reinikainen and Outi Krause and {Veringa Niemel{\"a}}, Marita",
note = "Project code: 20700",
year = "2010",
doi = "10.1016/j.fuel.2010.04.007",
language = "English",
volume = "89",
pages = "3272--3277",
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issn = "0016-2361",
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Catalytic clean-up of gasification gas with precious metal catalysts : A novel catalytic reformer development. / Rönkkönen, Hanne (Corresponding Author); Simell, Pekka; Reinikainen, Matti; Krause, Outi; Veringa Niemelä, Marita.

In: Fuel, Vol. 89, No. 11, 2010, p. 3272-3277.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Catalytic clean-up of gasification gas with precious metal catalysts

T2 - A novel catalytic reformer development

AU - Rönkkönen, Hanne

AU - Simell, Pekka

AU - Reinikainen, Matti

AU - Krause, Outi

AU - Veringa Niemelä, Marita

N1 - Project code: 20700

PY - 2010

Y1 - 2010

N2 - Several precious metal catalysts were prepared on modified zirconia and tested for the selective catalytic clean-up of the gasification gas. The activity of the precious metal catalysts were compared to that of the modified zirconia supported nickel catalyst and to the support. The activities of the catalysts were tested in a monolithic form in a quartz laboratory reactor at temperatures of 600–900 °C under atmospheric pressure using synthetic sulfur containing gas mixture. In addition, the stability of the Ni and Rh catalysts was examined by measuring the activities at 800 °C for 10 h using sulfur containing gas. The simulated gas contained CO, CO2, CH4, C2H4, H2, N2, H2O, H2S, NH3 and a tar model compound, i.e. a mixture of naphthalene and toluene. The addition of metal on the support promoted the activity in tar model compound decomposition only at the temperature range of 850–900 °C. The order of activity was Rh ≈ Ni > Pd > Ir > Ru > Pt. Almost complete tar model compound conversion was achieved with Rh, as well as with Ni, at 900 °C. At lower temperatures, the support showed higher activity in tar model compound decomposition compared to the metal/support catalysts tested. Only Ni and Ru showed moderate activity in ammonia decomposition. In regard to sulfur tolerance at 800 °C, Rh was activated during the 10 h experiment while the activity of Ni decreased. The performance of both was restored after the overnight N2 flush and the conversion of the tar model compound was higher for Rh (64%) than for Ni (46%).

AB - Several precious metal catalysts were prepared on modified zirconia and tested for the selective catalytic clean-up of the gasification gas. The activity of the precious metal catalysts were compared to that of the modified zirconia supported nickel catalyst and to the support. The activities of the catalysts were tested in a monolithic form in a quartz laboratory reactor at temperatures of 600–900 °C under atmospheric pressure using synthetic sulfur containing gas mixture. In addition, the stability of the Ni and Rh catalysts was examined by measuring the activities at 800 °C for 10 h using sulfur containing gas. The simulated gas contained CO, CO2, CH4, C2H4, H2, N2, H2O, H2S, NH3 and a tar model compound, i.e. a mixture of naphthalene and toluene. The addition of metal on the support promoted the activity in tar model compound decomposition only at the temperature range of 850–900 °C. The order of activity was Rh ≈ Ni > Pd > Ir > Ru > Pt. Almost complete tar model compound conversion was achieved with Rh, as well as with Ni, at 900 °C. At lower temperatures, the support showed higher activity in tar model compound decomposition compared to the metal/support catalysts tested. Only Ni and Ru showed moderate activity in ammonia decomposition. In regard to sulfur tolerance at 800 °C, Rh was activated during the 10 h experiment while the activity of Ni decreased. The performance of both was restored after the overnight N2 flush and the conversion of the tar model compound was higher for Rh (64%) than for Ni (46%).

KW - Zirconia

KW - Precious metal catalyst

KW - Tar

KW - Ammonia

KW - Gas clean-up

U2 - 10.1016/j.fuel.2010.04.007

DO - 10.1016/j.fuel.2010.04.007

M3 - Article

VL - 89

SP - 3272

EP - 3277

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 11

ER -