Nature of active phase of VO  catalysts supported on SiBeta for direct dehydrogenation of propane to propylene

Chen, Chong; Sun, Minglei; Hu, Zhong-Pan; Liu, Yuping; Zhang, Shoumin; Yuan, Zhong‐Yong

doi:10.1016/s1872-2067(19)63444-3

Cited by 50 publications

(37 citation statements)

References 55 publications

(75 reference statements)

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“…The activity of V 1 /g-C 3 N 4 is higher than those of Cr 1 /g-C 3 N 4 and Mn 1 /g-C 3 N 4 . In addition, Gong’s group reported that V 3+ in vanadium oxides is the active sites for PDH, and the hydroxyl groups of VOx/Al 2 O 3 (V–OH) may effectively promote the PDH efficiency. , Recently, Yuan’s group show that the PDH can be enhanced when the vanadium oxides are supported on dealuminated beta zeolite via V–O–Si bonds . These previous studies imply that V is a promising element in the development of new PDH catalysts.…”

Section: Resultsmentioning

confidence: 99%

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Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

et al. 2020

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In comparison with oil-based cracking technologies, the on-purpose dehydrogenation of propane (PDH) is a more eco-friendly and profitable approach to produce propylene. By means of density functional theory calculations, the present work reveals that the single vanadium (V) atom anchored on graphitic carbon nitride (V1/g-C3N4) may serve as a promising single-atom catalyst for non-oxidative PDH with industrially practical activity, selectivity, and thermal stability. The high activity of V1/g-C3N4 for PDH is attributed to the low-coordinated 3d orbitals of single V atoms, while the propylene selectivity is originated from the inhibition of the di-σ binding mode of propylene on the single V atoms. This work provides a guideline to design and screen out promising single-atom catalysts for selective dehydrogenation of alkanes.

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Section: Resultsmentioning

confidence: 99%

“…43,44 Recently, Yuan's group show that the PDH can be enhanced when the vanadium oxides are supported on dealuminated beta zeolite via V−O−Si bonds. 45 These previous studies imply that V is a promising element in the development of new PDH catalysts. Therefore, the catalytic performance of V 1 /g-C 3 N 4 is evaluated first.…”

Section: Resultsmentioning

confidence: 99%

Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

et al. 2020

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“…Moreover, the regenerated 3% VO x /SG sample shows similar peak area fractions of vanadium species to fresh 3% VO x /SG samples, indicating that the catalyst exhibits excellent regeneration performance. Therefore, we speculate that the deactivation of the dehydrogenation reaction is mainly due to the effect of carbon deposition and the aggregation of VO x during reaction Figure C shows the O 1s XPS spectra of samples, the peaks at 532.9 eV for fresh and regenerated 3% VO x /SG samples.…”

Section: Resultsmentioning

confidence: 93%

“…Yuan and co-worker reported the nature of active phase of supported VO x -based catalysts for PDH process. It is indicated that the VSiBeta catalysts possessed various VO x species and acidic sites on the dealuminated Beta zeolite (SiBeta) . Research results have indicated that the high-polymeric VO x species were concluded to be more active for coke formation than the acidic sites of carrier in the PDH process .…”

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Low-Polymeric VO_x/Silica Gel Catalyst for Efficient Catalytic Dehydrogenation of Propane to Propylene

Chen

You

Wei

et al. 2021

Ind. Eng. Chem. Res.

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Developing an efficient propane dehydrogenation (PDH) is a profound challenge for the production of propylene from the abundant source of propane in the chemical industry. In this work, a simple, efficient, and easy-to-operate process for highly selective PDH to propylene over low-polymeric VO x /silica gel (VO x /SG) catalyst has been successfully developed. The results demonstrate that the low-polymeric VO x /SG catalyst exhibits high selectivity (∼95%), good conversion (45.0 to 26.4% over 10 h test), and excellent regenerability in the PDH to propylene at 580 °C. The characterization results reveal that the low-polymeric VO x species are highly dispersed on the SG support, which contributes to prevent the coke formation and improve the stability of catalyst in PDH process. The highly dispersed low-polymeric VO x /SG catalyst for highly selective PDH to propylene is promising, because of the relatively superior activity and stable performance upon regeneration, and has important industrial application prospects.

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“…Similar to their work on Co-BEA, Chen et al prepared vanadium containing-BEA zeolites (0.5-10 wt %V )b yp ostsynthetic dealumination and treatment with NH 4 VO 3 solution. [36] Characterization of the catalysts indicated the formation of extra-framework polymeric vanadium species,i n particular for high loadings (> 3wt%). Catalysts with alow V loading ( 3wt%)w ere claimed to possess monomeric and isolated Vspecies bound to the zeolite framework, however, their exact nature was not determined.…”

Section: Entry Catalystmentioning

confidence: 98%

Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions

et al. 2020

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The development of catalysts that can operate under exceptionally harsh and unconventional conditions is of critical importance for the transition of the energy and chemicals industries to low‐emission and renewable chemical feedstocks. In this review we will highlight materials and more specifically metal‐containing zeolite catalysts that have been tested under harsh reaction conditions such as high temperature light alkane conversion and biomass valorization. Particular attention will be given to studies that explore the stability and recyclability of metal‐containing zeolite catalysts operating in continuous modes. Metal‐containing zeolites are considered as an important class of catalysts operating outside the comfort zone of current heterogeneous catalytic reactions in both gas and liquid phase reactions. The relationship between the properties of the metal‐containing zeolite and catalytic performance will be explored.

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Nature of active phase of VO catalysts supported on SiBeta for direct dehydrogenation of propane to propylene

Cited by 50 publications

References 55 publications

Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

Highly Dispersed Low-Polymeric VO_x/Silica Gel Catalyst for Efficient Catalytic Dehydrogenation of Propane to Propylene

Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions

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Nature of active phase of VO catalysts supported on SiBeta for direct dehydrogenation of propane to propylene

Cited by 50 publications

References 55 publications

Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

Single Vanadium Atoms Anchored on Graphitic Carbon Nitride as a High-Performance Catalyst for Non-oxidative Propane Dehydrogenation

Highly Dispersed Low-Polymeric VOx/Silica Gel Catalyst for Efficient Catalytic Dehydrogenation of Propane to Propylene

Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions

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Highly Dispersed Low-Polymeric VO_x/Silica Gel Catalyst for Efficient Catalytic Dehydrogenation of Propane to Propylene