Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiOx Metal Oxides Supported on Mesoporous SBA-15

Gazali Tanimu*, Ahmed T. Al-Qathmi, Abdullah M. Aitani, Sachio Asaoka, Ziyauddin S. Qureshi, Hassan Alasiri

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A Ni-BiOx/SBA-15 catalyst synthesized using a co-impregnation method was utilized for the oxidative dehydrogenation (ODH) of n-butenes (1-butene and 2-butene) to 1,3-butadiene in a fixed-bed reactor. The layered structure of NiO/β-Bi2O3/Bi2SiO5/SBA-15 was confirmed using porosity, XRD, and H2-TPR measurements. The components of the structure interacted moderately to form an effectively active and selective NiO species as an ODH catalyst. Thermodynamic analysis results revealed the most favorable pathway for butene conversion; however, this catalyst kinetically favored the desired and efficient route of butene conversion via adsorption of butenes, abstraction of α-hydrogen, and the formation of highly selective 1,3-butadiene. The selectivity of the oxygen species in the metal oxide system along the efficient route was sustained by co-feeding gas phase oxygen and increasing the reaction temperature. The catalyst comprising 14 wt % Ni-10 wt % Bi-O/SBA-15 exhibited a 2-butene conversion of 83% and a 1,3-butadiene selectivity of 89% at 400 °C and O2/C4= ratio = 4.0 mol/mol.

Original languageEnglish
Pages (from-to)2494-2503
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume62
Issue number6
DOIs
StatePublished - 15 Feb 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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