Oxidative Dehydrogenation of Propane to Propylene over VOx on Mixed θ-Al2O3/Alkaline Earth Metal Oxide Supports

Idris A. Bakare; Sagir Adamu; Muhammad Qamaruddin; Saad A. Al-Bogami; Sameer Al-Ghamdi; Mohammad M. Hossain

doi:10.1021/acs.iecr.9b01144

Oxidative Dehydrogenation of Propane to Propylene over VO_x on Mixed θ-Al₂O₃/Alkaline Earth Metal Oxide Supports

Idris A. Bakare
, Sagir Adamu
, Muhammad Qamaruddin
, Saad A. Al-Bogami
, Sameer Al-Ghamdi
, Mohammad M. Hossain^*

^*Corresponding author for this work

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

20 Scopus citations

Abstract

The oxidative dehydrogenation of propane to propylene with solid-phase oxygen of VO_x-based mixed-oxide catalysts is investigated. The catalysts are prepared by depositing VO_x species on alkaline-oxide-modified θ-Al₂O₃ supports. X-ray diffraction and X-ray photoelectron spectroscopy reveal the nature and variations of the crystalline phases. The surface area, acidity, and reduction properties of the catalysts are functions of the innate properties of bare θ-Al₂O₃ and the characteristic properties of each alkaline oxide. The multistage reduction of VO_x on mixed-oxide supports indicates the reduction of various VO_x species. The catalysts are evaluated in a fluidized CREC Riser Simulator by injecting a known amount of propane at different reaction temperatures. All catalysts show excellent propane conversion and plausible selectivity to olefins. VO_x on θ-Al₂O₃/CaO minimizes the formation of CO_x species, whereas VO_x θ-Al₂O₃/BaO displays the highest olefin yields (49%).

Original language	English
Pages (from-to)	10785-10792
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	58
Issue number	25
DOIs	https://doi.org/10.1021/acs.iecr.9b01144
State	Published - 26 Jun 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1021/acs.iecr.9b01144

Cite this

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title = "Oxidative Dehydrogenation of Propane to Propylene over VOx on Mixed θ-Al2O3/Alkaline Earth Metal Oxide Supports",

abstract = "The oxidative dehydrogenation of propane to propylene with solid-phase oxygen of VOx-based mixed-oxide catalysts is investigated. The catalysts are prepared by depositing VOx species on alkaline-oxide-modified θ-Al2O3 supports. X-ray diffraction and X-ray photoelectron spectroscopy reveal the nature and variations of the crystalline phases. The surface area, acidity, and reduction properties of the catalysts are functions of the innate properties of bare θ-Al2O3 and the characteristic properties of each alkaline oxide. The multistage reduction of VOx on mixed-oxide supports indicates the reduction of various VOx species. The catalysts are evaluated in a fluidized CREC Riser Simulator by injecting a known amount of propane at different reaction temperatures. All catalysts show excellent propane conversion and plausible selectivity to olefins. VOx on θ-Al2O3/CaO minimizes the formation of COx species, whereas VOx θ-Al2O3/BaO displays the highest olefin yields (49\%).",

author = "Bakare, \{Idris A.\} and Sagir Adamu and Muhammad Qamaruddin and Al-Bogami, \{Saad A.\} and Sameer Al-Ghamdi and Hossain, \{Mohammad M.\}",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acs.iecr.9b01144",

language = "English",

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AU - Bakare, Idris A.

AU - Adamu, Sagir

AU - Qamaruddin, Muhammad

AU - Al-Bogami, Saad A.

AU - Al-Ghamdi, Sameer

AU - Hossain, Mohammad M.

PY - 2019/6/26

Y1 - 2019/6/26

N2 - The oxidative dehydrogenation of propane to propylene with solid-phase oxygen of VOx-based mixed-oxide catalysts is investigated. The catalysts are prepared by depositing VOx species on alkaline-oxide-modified θ-Al2O3 supports. X-ray diffraction and X-ray photoelectron spectroscopy reveal the nature and variations of the crystalline phases. The surface area, acidity, and reduction properties of the catalysts are functions of the innate properties of bare θ-Al2O3 and the characteristic properties of each alkaline oxide. The multistage reduction of VOx on mixed-oxide supports indicates the reduction of various VOx species. The catalysts are evaluated in a fluidized CREC Riser Simulator by injecting a known amount of propane at different reaction temperatures. All catalysts show excellent propane conversion and plausible selectivity to olefins. VOx on θ-Al2O3/CaO minimizes the formation of COx species, whereas VOx θ-Al2O3/BaO displays the highest olefin yields (49%).

AB - The oxidative dehydrogenation of propane to propylene with solid-phase oxygen of VOx-based mixed-oxide catalysts is investigated. The catalysts are prepared by depositing VOx species on alkaline-oxide-modified θ-Al2O3 supports. X-ray diffraction and X-ray photoelectron spectroscopy reveal the nature and variations of the crystalline phases. The surface area, acidity, and reduction properties of the catalysts are functions of the innate properties of bare θ-Al2O3 and the characteristic properties of each alkaline oxide. The multistage reduction of VOx on mixed-oxide supports indicates the reduction of various VOx species. The catalysts are evaluated in a fluidized CREC Riser Simulator by injecting a known amount of propane at different reaction temperatures. All catalysts show excellent propane conversion and plausible selectivity to olefins. VOx on θ-Al2O3/CaO minimizes the formation of COx species, whereas VOx θ-Al2O3/BaO displays the highest olefin yields (49%).

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