Ga2O3/La2O3-γAl2O3 catalysts for CO2-assisted propane oxidative dehydrogenation to propylene

Rahima A. Lucky; Majid Lasisi Balogun; Wasim Ullah Khan; Shakeel Ahmed; Mohammed S. Ba-Shammakh; Mohammad M. Hossain

doi:10.1016/j.apcata.2024.119890

Ga₂O₃/La₂O₃-γAl₂O₃ catalysts for CO₂-assisted propane oxidative dehydrogenation to propylene

Rahima A. Lucky, Majid Lasisi Balogun, Wasim Ullah Khan, Shakeel Ahmed, Mohammed S. Ba-Shammakh, Mohammad M. Hossain^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Novel Ga₂O₃/La₂O₃-γAl₂O₃ was investigated for ODH of propane to propylene using CO₂ as a mild oxidant in a batch scale fluidized CREC Riser Simulator. La₂O₃ in the catalysts provided a control of both the reducibility and acidity, as shown by H₂-TPR and NH₃-TPD, respectively. The propane conversion and products selectivity were strong function of La₂O₃ content in the Ga₂O₃/La₂O₃-γAl₂O₃ catalysts. With increasing La₂O₃ content in the catalyst, propane conversion dropped slightly but the propylene selectivity and yields increased. It was proposed that the presence of La₂O₃ reduced the non-selective sites and the acidity of the catalysts, that contributed towards deep oxidation of propane and propylene. The improved activity and selectivity with CO₂ addition implied that the as-synthesized catalyst possesses CO₂ activation capability required for ODH reactions. Among the investigated catalysts, Ga₂O₃/La₂O₃-γAl₂O₃(1:1) exhibited the highest propane conversion (92 %) and propylene yield (56 %) at 600 ℃ in the presence of CO₂.

Original language	English
Article number	119890
Journal	Applied Catalysis A: General
Volume	685
DOIs	https://doi.org/10.1016/j.apcata.2024.119890
State	Published - 25 Sep 2024

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

Keywords

Carbon dioxide
Gallium oxide
Mild oxidant
Propane
Propylene

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2024.119890

Cite this

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title = "Ga2O3/La2O3-γAl2O3 catalysts for CO2-assisted propane oxidative dehydrogenation to propylene",

abstract = "Novel Ga2O3/La2O3-γAl2O3 was investigated for ODH of propane to propylene using CO2 as a mild oxidant in a batch scale fluidized CREC Riser Simulator. La2O3 in the catalysts provided a control of both the reducibility and acidity, as shown by H2-TPR and NH3-TPD, respectively. The propane conversion and products selectivity were strong function of La2O3 content in the Ga2O3/La2O3-γAl2O3 catalysts. With increasing La2O3 content in the catalyst, propane conversion dropped slightly but the propylene selectivity and yields increased. It was proposed that the presence of La2O3 reduced the non-selective sites and the acidity of the catalysts, that contributed towards deep oxidation of propane and propylene. The improved activity and selectivity with CO2 addition implied that the as-synthesized catalyst possesses CO2 activation capability required for ODH reactions. Among the investigated catalysts, Ga2O3/La2O3-γAl2O3(1:1) exhibited the highest propane conversion (92 %) and propylene yield (56 %) at 600 ℃ in the presence of CO2.",

keywords = "Carbon dioxide, Gallium oxide, Mild oxidant, Propane, Propylene",

author = "Lucky, {Rahima A.} and Balogun, {Majid Lasisi} and Khan, {Wasim Ullah} and Shakeel Ahmed and Ba-Shammakh, {Mohammed S.} and Hossain, {Mohammad M.}",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = sep,

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doi = "10.1016/j.apcata.2024.119890",

language = "English",

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T1 - Ga2O3/La2O3-γAl2O3 catalysts for CO2-assisted propane oxidative dehydrogenation to propylene

AU - Lucky, Rahima A.

AU - Balogun, Majid Lasisi

AU - Khan, Wasim Ullah

AU - Ahmed, Shakeel

AU - Ba-Shammakh, Mohammed S.

AU - Hossain, Mohammad M.

PY - 2024/9/25

Y1 - 2024/9/25

N2 - Novel Ga2O3/La2O3-γAl2O3 was investigated for ODH of propane to propylene using CO2 as a mild oxidant in a batch scale fluidized CREC Riser Simulator. La2O3 in the catalysts provided a control of both the reducibility and acidity, as shown by H2-TPR and NH3-TPD, respectively. The propane conversion and products selectivity were strong function of La2O3 content in the Ga2O3/La2O3-γAl2O3 catalysts. With increasing La2O3 content in the catalyst, propane conversion dropped slightly but the propylene selectivity and yields increased. It was proposed that the presence of La2O3 reduced the non-selective sites and the acidity of the catalysts, that contributed towards deep oxidation of propane and propylene. The improved activity and selectivity with CO2 addition implied that the as-synthesized catalyst possesses CO2 activation capability required for ODH reactions. Among the investigated catalysts, Ga2O3/La2O3-γAl2O3(1:1) exhibited the highest propane conversion (92 %) and propylene yield (56 %) at 600 ℃ in the presence of CO2.

AB - Novel Ga2O3/La2O3-γAl2O3 was investigated for ODH of propane to propylene using CO2 as a mild oxidant in a batch scale fluidized CREC Riser Simulator. La2O3 in the catalysts provided a control of both the reducibility and acidity, as shown by H2-TPR and NH3-TPD, respectively. The propane conversion and products selectivity were strong function of La2O3 content in the Ga2O3/La2O3-γAl2O3 catalysts. With increasing La2O3 content in the catalyst, propane conversion dropped slightly but the propylene selectivity and yields increased. It was proposed that the presence of La2O3 reduced the non-selective sites and the acidity of the catalysts, that contributed towards deep oxidation of propane and propylene. The improved activity and selectivity with CO2 addition implied that the as-synthesized catalyst possesses CO2 activation capability required for ODH reactions. Among the investigated catalysts, Ga2O3/La2O3-γAl2O3(1:1) exhibited the highest propane conversion (92 %) and propylene yield (56 %) at 600 ℃ in the presence of CO2.

KW - Carbon dioxide

KW - Gallium oxide

KW - Mild oxidant

KW - Propane

KW - Propylene

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