Promotion effect of proton-conducting oxide BaZr0. 1Ce0. 7Y0. 2O3− δ on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen

John Humphreys, Rong Lan, Dongwei Du, Wei Xu, Shanwen Tao

Research output: Contribution to journalArticle

4 Citations (Scopus)
19 Downloads (Pure)

Abstract

In this report, for the first time, it has been observed that proton-conducting oxide BaZr0.1Ce0.7Y0.2O3−δ (BZCY) has significant promotion effect on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen. Renewable hydrogen can be used for ammonia synthesis to save CO2 emission. By investigating the operating parameters of the reaction the optimal conditions for this catalyst were identified. It was found that at 620 °C with a total flow rate of 200 mL min−1 and a H2/N2 mol ratio of 3, an activity of approximately 250 μmol g−1 h−1 can be achieved. This is ten times larger than that for the unpromoted Ni catalyst under the same conditions although the stability of both catalysts in the presence of steam was not good. The specific activity of Ni supported on proton-conducting oxide BZCY is approximately 72 times higher than that of Ni supported on non-proton conductor MgOCeO2.
Original languageEnglish
Pages (from-to)17726-17736
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number37
Early online date23 Aug 2018
DOIs
Publication statusPublished - 13 Sep 2018

Fingerprint

promotion
catalytic activity
ammonia
Ammonia
Catalyst activity
Protons
Nitrogen
nitrogen
catalysts
conduction
Hydrogen
Catalysts
Oxides
protons
oxides
hydrogen
synthesis
steam
Steam
conductors

Bibliographical note

Copyright © and Moral Rights are retained by the author(s) and/ or other
copyright owners. A copy can be downloaded for personal non-commercial
research or study, without prior permission or charge. This item cannot be
reproduced or quoted extensively from without first obtaining permission in
writing from the copyright holder(s). The content must not be changed in any way
or sold commercially in any format or medium without the formal permission of
the copyright holders.

Keywords

  • Renewable hydrogen
  • Ammonia synthesis
  • Catalysis
  • Proton conductor
  • Nickel catalyst
  • Catalyst promoter

Cite this

Promotion effect of proton-conducting oxide BaZr0. 1Ce0. 7Y0. 2O3− δ on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen. / Humphreys, John; Lan, Rong; Du, Dongwei; Xu, Wei; Tao, Shanwen .

In: International Journal of Hydrogen Energy, Vol. 43, No. 37, 13.09.2018, p. 17726-17736.

Research output: Contribution to journalArticle

@article{ba8e72a9673c4aabb0b09889bc2b72ff,
title = "Promotion effect of proton-conducting oxide BaZr0. 1Ce0. 7Y0. 2O3− δ on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen",
abstract = "In this report, for the first time, it has been observed that proton-conducting oxide BaZr0.1Ce0.7Y0.2O3−δ (BZCY) has significant promotion effect on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen. Renewable hydrogen can be used for ammonia synthesis to save CO2 emission. By investigating the operating parameters of the reaction the optimal conditions for this catalyst were identified. It was found that at 620 °C with a total flow rate of 200 mL min−1 and a H2/N2 mol ratio of 3, an activity of approximately 250 μmol g−1 h−1 can be achieved. This is ten times larger than that for the unpromoted Ni catalyst under the same conditions although the stability of both catalysts in the presence of steam was not good. The specific activity of Ni supported on proton-conducting oxide BZCY is approximately 72 times higher than that of Ni supported on non-proton conductor MgOCeO2.",
keywords = "Renewable hydrogen, Ammonia synthesis, Catalysis, Proton conductor, Nickel catalyst, Catalyst promoter",
author = "John Humphreys and Rong Lan and Dongwei Du and Wei Xu and Shanwen Tao",
note = "Copyright {\circledC} and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.",
year = "2018",
month = "9",
day = "13",
doi = "10.1016/j.ijhydene.2018.08.002",
language = "English",
volume = "43",
pages = "17726--17736",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier",
number = "37",

}

TY - JOUR

T1 - Promotion effect of proton-conducting oxide BaZr0. 1Ce0. 7Y0. 2O3− δ on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen

AU - Humphreys, John

AU - Lan, Rong

AU - Du, Dongwei

AU - Xu, Wei

AU - Tao, Shanwen

N1 - Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

PY - 2018/9/13

Y1 - 2018/9/13

N2 - In this report, for the first time, it has been observed that proton-conducting oxide BaZr0.1Ce0.7Y0.2O3−δ (BZCY) has significant promotion effect on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen. Renewable hydrogen can be used for ammonia synthesis to save CO2 emission. By investigating the operating parameters of the reaction the optimal conditions for this catalyst were identified. It was found that at 620 °C with a total flow rate of 200 mL min−1 and a H2/N2 mol ratio of 3, an activity of approximately 250 μmol g−1 h−1 can be achieved. This is ten times larger than that for the unpromoted Ni catalyst under the same conditions although the stability of both catalysts in the presence of steam was not good. The specific activity of Ni supported on proton-conducting oxide BZCY is approximately 72 times higher than that of Ni supported on non-proton conductor MgOCeO2.

AB - In this report, for the first time, it has been observed that proton-conducting oxide BaZr0.1Ce0.7Y0.2O3−δ (BZCY) has significant promotion effect on the catalytic activity of Ni towards ammonia synthesis from hydrogen and nitrogen. Renewable hydrogen can be used for ammonia synthesis to save CO2 emission. By investigating the operating parameters of the reaction the optimal conditions for this catalyst were identified. It was found that at 620 °C with a total flow rate of 200 mL min−1 and a H2/N2 mol ratio of 3, an activity of approximately 250 μmol g−1 h−1 can be achieved. This is ten times larger than that for the unpromoted Ni catalyst under the same conditions although the stability of both catalysts in the presence of steam was not good. The specific activity of Ni supported on proton-conducting oxide BZCY is approximately 72 times higher than that of Ni supported on non-proton conductor MgOCeO2.

KW - Renewable hydrogen

KW - Ammonia synthesis

KW - Catalysis

KW - Proton conductor

KW - Nickel catalyst

KW - Catalyst promoter

U2 - 10.1016/j.ijhydene.2018.08.002

DO - 10.1016/j.ijhydene.2018.08.002

M3 - Article

VL - 43

SP - 17726

EP - 17736

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 37

ER -