One-pot synthesis of VO x /Al 2 O 3 as efficient catalysts for propane dehydrogenation

Wang, Guangjian; Xu, Hao; Lü, Kai; Ding, Zhihao; Bing, Liancheng

doi:10.3906/kim-1907-53

Cited by 3 publications

(2 citation statements)

References 39 publications

(52 reference statements)

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“…For alkane conversion to light olefins, vanadium‐based catalysts have been reported to achieve high alkane conversion and olefins selectivity in oxidative aided catalysis [8–11] . This is because vanadium possesses variable oxidation states ranging from V 4+ and V 5+ , which makes it an active component in several oxidative catalytic reactions.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst

Amusa

Adamu

Arjah

et al. 2021

Chemistry An Asian Journal

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The kinetics of oxidative cracking of n‐hexane to light olefins using the lattice oxygen of VOx/SrO‐γAl2O3 catalysts has been investigated. Kinetic experiments were conducted in a CREC Riser Simulator (CERC: Chemical Reactor Engineering Center), which mimics fluidized bed reactors. The catalyst's performance is partly attributed to the moderate interaction between active VOx species and the SrO‐γAl2O3 support. This moderate interaction serves to control the release of lattice oxygen to curtail deep oxidation. The incorporation of basic SrO component in the support also helped to moderate the catalyst's acidity to checkmate excessive cracking. Langmuir‐Hinshelwood model was applied to formulate the rate equations. The intrinsic kinetic parameters were obtained by fitting the experimental data to the kinetic model using a nonlinear regression algorithm at a 95% confidence interval, implemented in MATLAB. n‐Hexane transforms to olefins at a specific reaction rate of 1.33 mol/gcat.s and activation energy of 119.2 kJ/mol. These values when compared with other duplets (i. e., ki° and EA) for paraffins to olefins, show that indeed olefins are stable products of the oxidative conversion of n‐hexane over VOx/SrO‐γAl2O3 under a fluidized bed condition. Values of activation energy for all COx formation routes indicate that intermediate paraffins are likely to be cracked to form CH4 than to be converted directly to COx. On the other hand, olefins may transform partly, and directly to COx (E9=9.65 kJ/mol) than to form CH4 (E8=89.1 kJ/mol) in the presence of excess lattice oxygen. Overall, olefins appear to be stable to deep oxidation due to the role of SrO in controlling the amount of lattice oxygen of the catalyst at the reaction temperature.

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Section: Introductionmentioning

confidence: 99%

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst

Amusa

Adamu

Arjah

et al. 2021

Chemistry An Asian Journal

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“…Catalysts such as rhenium oxides [8], MoOx/TiO 2 [9], modified with VO x /TS-1 [10], and V-complex oxides [11,12] showed a good performance in the selective oxidation of methanol. Vanadium oxides, as highly efficiently catalysts, are widely applied in various catalytic reactions, such as the dehydrogenation hydrocarbons [13]. All these catalysts are complex systems, the study of activities of which is difficult due to influence of numerous factors.…”

mentioning

confidence: 99%

Feature of catalysis on bimetallic alloys Zr with V, Mo, and Fe in the reaction of methanol oxidation

Efendi¹,

Magerramova²,

Aliyeva³

et al. 2021

Turk J Chem

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Catalytic behaviors of bimetallic catalysts-alloys of zirconium with vanadium, molybdenum, and iron was investigated in the oxidative dehydrogenation of methanol. The conditions for the formation of the catalyst’s active surface were revealed. The conversion of methanol into formaldehyde, dimethyl ether, and dimethoxymethane on bimetallic catalysts was studied. The characterization of catalysts was performed by XRD, XPS, and SEM. It was shown that the activity of samples increases after О 2 + Н 2 treatment and was associated with segregation of the active components of alloys (V, Mo) on the surface of catalysts and realization of their optimal oxidation state under catalysis conditions.

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Active species and fundamentals of their creation in Co-containing catalysts for efficient propane dehydrogenation to propylene

Zhang

et al. 2023

Chemical Engineering Journal

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One-pot synthesis of VO x /Al 2 O 3 as efficient catalysts for propane dehydrogenation

Cited by 3 publications

References 39 publications

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst

Feature of catalysis on bimetallic alloys Zr with V, Mo, and Fe in the reaction of methanol oxidation

Active species and fundamentals of their creation in Co-containing catalysts for efficient propane dehydrogenation to propylene

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One-pot synthesis of VO x /Al 2 O 3 as efficient catalysts for propane dehydrogenation

Cited by 3 publications

References 39 publications

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VOx/SrO‐γAl2O3 Catalyst

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VOx/SrO‐γAl2O3 Catalyst

Feature of catalysis on bimetallic alloys Zr with V, Mo, and Fe in the reaction of methanol oxidation

Active species and fundamentals of their creation in Co-containing catalysts for efficient propane dehydrogenation to propylene

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Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst

Kinetics of Oxidative Cracking of n‐Hexane to Light Olefins using Lattice Oxygen of a VO_x/SrO‐γAl₂O₃ Catalyst