Molybdenum-based catalysts supported on alumina for direct dehydrogenation of isobutane

Wang, Jiameng; Song, Zhen; Han, Mingxun; Li, Xiangxiang; Zhang, Lihong

doi:10.1016/j.mcat.2021.111746

Cited by 3 publications

(1 citation statement)

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“…105 Regarding other active systems, the Mo 4+ species in the alumina-supported catalysts were identified as the most active sites for butane and isobutane DDH, while careful support design is needed for the active site stabilization. 106,107 2.2.3. Summary.…”

Section: Chem Soc Rev Review Articlementioning

confidence: 99%

Light olefin synthesis from a diversity of renewable and fossil feedstocks: state-of the-art and outlook

et al. 2022

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Section: Chem Soc Rev Review Articlementioning

confidence: 99%

Light olefin synthesis from a diversity of renewable and fossil feedstocks: state-of the-art and outlook

et al. 2022

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Promoted Effect of Zinc and Sulfur on the Structural and Catalytic Properties of Bimetallic Nickel–Zinc Catalysts for the Dehydrogenation of Propane

et al. 2022

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Dispersion and Stabilization of Supported Layered Double Hydroxide-Based Nanocomposites on V-Based Catalysts for Nonoxidative Dehydrogenation of Isobutane to Isobutene

Liu

Han

et al. 2022

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Nonoxidative dehydrogenation of isobutane is one of the sustainable strategies for producing high value added isobutene. As alternatives for the commercial Pt- and Cr-based dehydrogenation catalysts, supported V-based catalysts are worthy of study. In this work, a series of VOx/mMgAlO-R catalysts (m = 10, 15, 20, 25 and 30) were designed and prepared by loading VOx on mMgAlO composite oxide supports derived from mesoporous Al2O3-supported layered double hydroxide (LDH) nanocomposites. The calcined and reduced catalysts were characterized by X-ray diffraction (XRD), Raman spectra, Ultraviolet-visible diffuse reflectance (UV-Vis) spectra, NH3 temperature-programmed desorption (NH3-TPD), Temperature-programmed reduction (H2-TPR), X-Ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TG) and low temperature N2 adsorption–desorption isotherms. The as-synthesized VOx/20MgAlO-R with appropriate Mg addition exhibits superior activity (43–56% conversion and 77–81% selectivity), excellent stability and coking-resistance for the isobutane dehydrogenation. The structure–performance relationship reveals that the formation of VOx species confined in the reconstructed LDH interlayer and porous MgO facilitates dispersing and stabilizing the VOx species. The low polymerization degree and higher proportion of V4+ ion for VOx species, strong acidity of medium acid sites and low concentration of strong acid sites are responsible for the excellent anti-coking and catalytic performance. The strong VOx–support interaction is beneficial for enhancing the stability of the catalysts.

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Molybdenum-based catalysts supported on alumina for direct dehydrogenation of isobutane

Cited by 3 publications

References 46 publications

Light olefin synthesis from a diversity of renewable and fossil feedstocks: state-of the-art and outlook

Light olefin synthesis from a diversity of renewable and fossil feedstocks: state-of the-art and outlook

Promoted Effect of Zinc and Sulfur on the Structural and Catalytic Properties of Bimetallic Nickel–Zinc Catalysts for the Dehydrogenation of Propane

Dispersion and Stabilization of Supported Layered Double Hydroxide-Based Nanocomposites on V-Based Catalysts for Nonoxidative Dehydrogenation of Isobutane to Isobutene

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