Systematic study on the influence of the morphology of α-MoO3 in the selective oxidation of propylene

Schuh, Kirsten; Kleist, Wolfgang; Høj, Martin; Jensen, Anker Degn; Beato, Pablo; Patzke, Greta R.; Grunwaldt, Jan‐Dierk

doi:10.1016/j.jssc.2015.04.011

Cited by 26 publications

(25 citation statements)

References 58 publications

(70 reference statements)

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“…The products of selective oxidation mainly include acrylic acid and acrolein. Schuh et al [118] studied the influence of the morphology of [116]. Reprinted with permission from [116].…”

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

“…The products of selective oxidation mainly include acrylic acid and acrolein. Schuh et al [118] studied the influence of the morphology of α-MoO 3 in the selective oxidation of propylene. The results suggested that the morphologies of the samples have a significant effect not only on the selectivity to acrolein, but also on the propylene conversion (see Figure 10a,b).…”

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

“…MoO3 was as an electron and structure-type bifunctional promoter in this system. [118]. Reprinted with permission from [118].…”

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

“…The conversion of CH4 into chemicals is much more economical and energy-efficient compared to CO2. Many publications in this field have been totally [118]. Reprinted with permission from [118].…”

Section: Selective Catalytic Oxidation Of Methanementioning

confidence: 99%

“…Many publications in this field have been totally [118]. Reprinted with permission from [118]. Copyright 2015 Elsevier B.V. (c) Evolution of ion currents of CO 2 , acrolein, and acrylic acid obtained by mass spectrometric analysis of the gas phase composition during thermal treatment of MoO 3 /SiO 2 or α-MoO 3 in propene and oxygen [121].…”

Section: Selective Catalytic Oxidation Of Methanementioning

confidence: 99%

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Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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This paper mainly focuses on the application of nanostructured MoO 3 materials in both energy and environmental catalysis fields. MoO 3 has wide tunability in bandgap, a unique semiconducting structure, and multiple valence states. Due to the natural advantage, it can be used as a high-activity metal oxide catalyst, can serve as an excellent support material, and provide opportunities to replace noble metal catalysts, thus having broad application prospects in catalysis. Herein, we comprehensively summarize the crystal structure and properties of nanostructured MoO 3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO 3 are also discussed.Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].Molybdenum oxide (MoO 3 ), a kind of transition metal oxide with a n-type semiconducting, nontoxic nature and high stability, has attracted a lot of attention. In particular, nanostructured MoO 3 has demonstrated superior properties to bulk MoO 3 , which is successfully employed in rechargeable batteries [13], capacitors [14], photocatalysis [15], electrocatalysis [16], gas sensors [17], and other applications [6]. The extended tunnels between the MoO 6 octahedra in MoO 3 are suitable for insert/de-insert mobile ions, such as H + and Li + , and multiple oxidation states can enable rich redox reactions. Moreover, the superiorities of low cost, chemical stability, high theoretical specific capacity (1117 mA·h/g), and the environmentally friendly nature make nanostructured MoO 3 exceptional electrode materials for rechargeable batteries capacitors [13,18]. MoO 3 has been investigated as the photocatalyst in terms of its anisotropic layered structure for absorbing UV, as well as visible light. Introducing a defect band by H + intercalation or oxygen vacancies can create defect state and decrease MoO 3 bandgap, which effectively increase the photocatalytic activity [15]. Each oxygen atom bonds to only one molybdenum atom of MoO 6 octahedra, and oxygen vacancy generates Mo dangling bond. MoO 3 favors the adsorption of water molecules in oxygen vacancies, which act as electron acceptors and consequently reduce the energy barrier make it highly reactive for electrocatalysis [2,19]. As a good gasochromic material, MoO 3 has efficient positive-ion accommodation and good charge transfer, and it can be used as an optical-based gas sensor. Moreover, relying on the change in the conductance of the oxide-on-gas adsorption/reaction, MoO 3 has been used for NO, NO 2 , CO, H 2 , NH 3 , and other gases [17]. The unique structure strongly affects the performances. Large efforts have been made to obtain nanostructured MoO 3 with appealing properties by engineering multiple synthetic strategies for the applications in various fields. A variety of methods have been developed, including hydrothermal met...

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“…The products of selective oxidation mainly include acrylic acid and acrolein. Schuh et al [118] studied the influence of the morphology of [116]. Reprinted with permission from [116].…”

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

“…MoO3 was as an electron and structure-type bifunctional promoter in this system. [118]. Reprinted with permission from [118].…”

Section: Selective Catalytic Oxidation Of Propenementioning

confidence: 99%

Section: Selective Catalytic Oxidation Of Methanementioning

confidence: 99%

Section: Selective Catalytic Oxidation Of Methanementioning

confidence: 99%

See 3 more Smart Citations

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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Degenerately Hydrogen Doped Molybdenum Oxide Nanodisks for Ultrasensitive Plasmonic Biosensing

Zhang

Zavabeti

Chrimes

et al. 2018

Adv Funct Materials

112

105

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Plasmonic biosensors based on noble metals generally suffer from low sensitivities if the perturbation of refractive‐index in the ambient is not significant. By contrast, the features of degenerately doped semiconductors offer new dimensions for plasmonic biosensing, by allowing charge‐based detection. Here, this concept is demonstrated in plasmonic hydrogen doped molybdenum oxides (HxMoO3), with the morphology of 2D nanodisks, using a representative enzymatic glucose sensing model. Based on the ultrahigh capacity of the molybdenum oxide nanodisks for accommodating H+, the plasmon resonance wavelengths of HxMoO3 are shifted into visible‐near‐infrared wavelengths. These plasmonic features alter significantly as a function of the intercalated H+ concentration. The facile H+ deintercalation out of HxMoO3 provides an exceptional sensitivity and fast kinetics to charge perturbations during enzymatic oxidation. The optimum sensing response is found at H1.55MoO3, achieving a detection limit of 2 × 10−9m at 410 nm, even when the biosensing platform is adapted into a light‐emitting diode‐photodetector setup. The performance is superior in comparison to all previously reported plasmonic enzymatic glucose sensors, providing a great opportunity in developing high performance biosensors.

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Learning from the past: Are catalyst design principles transferrable between hydrodesulfurization and deoxygenation?

Kasiraju

Grabow

2018

AIChE Journal

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Molybdenum-oxide (MoO 3 ) is a promising catalyst candidate for hydrodeoxygenation (HDO) of pyrolysis vapor or liquefaction products to renewable fuels or value-added chemicals. Density functional theory is used to study the mechanism and active site requirements for HDO of furan over the MoO 3 (010) facet and contrast our results with prior work on hydrodesulfurization (HDS) of thiophene over MoS 2 model catalysts. The potential energy diagram for HDO over a realistically terminated MoO 3 (010) surface facet reveals that the elementary reaction steps for deoxygenation are facile, but the formation of oxygen-vacancies is slow and endothermic. In general, HDO over MoO 3 and HDS over MoS 2 exhibit mechanistic similarities, which suggests that knowledge transfer from the mature HDS system to the emerging field of HDO catalysis is possible. For example, transition metal promotion of MoO 3 resulted in an improvement of the kinetics and thermodynamics of oxygen vacancy formation, similar to Co and Ni promotion of MoS 2 . V C 2018 American Institute of Chemical Engineers AIChE J, 00: 000-000, 2018

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Systematic study on the influence of the morphology of α-MoO3 in the selective oxidation of propylene

Cited by 26 publications

References 58 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Degenerately Hydrogen Doped Molybdenum Oxide Nanodisks for Ultrasensitive Plasmonic Biosensing

Learning from the past: Are catalyst design principles transferrable between hydrodesulfurization and deoxygenation?

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