Transition metal-catalyzed deoxydehydration: missing pieces of the puzzle

Jentoft, Friederike C.

doi:10.1039/d1cy02083h

Cited by 14 publications

(11 citation statements)

References 144 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Weakly adsorbed organic compounds can be removed from the catalyst surface by both washing solvents. With water as the washing solvent, the diolate species can be also removed because water is known to retard DODH reactions by the suppression of diolate formation Table summarizes the TG-DTA results, and the raw profiles are shown in Figure S11.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Thus, the reason for the inactivity of the aggregated Re species is important. In fact, for Mo-based catalysts, all monomeric Mo complexes, , polyoxomolybdate, and dimeric MoO x species on TiO 2 support , can work as active catalysts in DODH. There has been no convincing theoretical explanation for the low activity of aggregated Re species.…”

Section: Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst

Cao,

Larasati,

Yabushita

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

The reaction kinetics of deoxydehydration + hydrogenation (DODH + HG; didehydroxylation) of erythritol to butanediols and n-butane over the ReO x -Pd/CeO2 catalyst was investigated. Competitive adsorption of polyols and catalyst deactivation during the DODH + HG reaction were necessary to be considered in the kinetics. The order of the adsorption strength on the catalyst surface was erythritol >1,2-butanediol > water >1,4-butanediol and monoalcohols. The deactivation during the reaction was investigated with two models: time-dependent and conversion-dependent ones. The conversion-dependent model better fitted both the activities of reused catalysts and the time-course data. The deactivated catalysts were characterized with TG-DTA and Raman spectroscopy. The weight loss and the temperature for the combustion of deposited organic species in TG-DTA did not correlate with the deactivation degree. On the other hand, a growing signal at around 910 cm–1 was observed in Raman spectroscopy in line with deactivation, which can be explained by the formation of aggregated ReO x species. The low activity of aggregated ReO x species was supported by DFT calculations showing that the activation energy of dimeric Re2O x H y /CeO2 catalyst species for the cleavage of two C–O bonds is higher than that of monomeric ReO x H y /CeO2 species.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst

Cao,

Larasati,

Yabushita

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

show abstract

“…In our research group, for several years, selective deoxygenation studies on natural polyols have been carried out using an early TM (i. e., rhenium), [10,125,129,133,280] which can be, in our opinion, a starting point for moving to analogous (from the catalytic point of view) metals, such as Mo or V. [281][282][283][284] However, efficient deoxygenation performance is not solely determined by the choice of the metal catalyst. As strongly demonstrated by this review, the actual applications mainly employ traditional thermochemical methodologies to transform polyols to low-oxygenated, carbon-equivalent, chemicals.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Coccia,

d'Alessandro,

Mascitti

et al. 2024

ChemCatChem

View full text Add to dashboard Cite

Glycerol (GL) represents a widespread agro‐industrial waste. Its valorization is pivotal for a sustainable society because GL is a renewable compound deriving from biomass, but it has a high oxygen to carbon ratio, compared with feedstock used in the energy and chemistry sectors. Oxygen‐poor derivatives are easily and immediately transferable to the industry, avoiding a deep and pressing modification of the plants. From this perspective, keeping the carbon content but with an oxygen content reduction, we could effectively obtain the enhancement of the recovery and the use of GL converting it into attractive industrial building‐blocks. In this Review, we present and discuss the up‐to‐date results about the chemical reduction of GL into products with 3 carbon and 0, 1, or 2 oxygen atoms. The focus is on the transition metal (TM) catalysts that have made the hydrogenation reactions of GL possible, partitioning the metals into early and late, based on their position in the periodic table. This discussion will contribute to select and develop new catalysts aimed at the improvement of the yield and of the selectivity in the hydrogenation reactions of GL.

show abstract

“…The related deoxydehydration reaction, which converts a 1,2-diol into an alkene with the help of a sacrificial reductant, will not be covered as it has been reviewed recently. 42…”

Section: Alcohols As Starting Materialsmentioning

confidence: 99%

Sustainable routes to alkenes: applications of homogeneous catalysis to the dehydration of alcohols to alkenes

Ward

Saccomando²,

Walker³

et al. 2023

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Transition metal-catalyzed deoxydehydration: missing pieces of the puzzle

Abstract: Deoxydehydration (DODH) is a transformation that converts a vicinal diol into an olefin with the help of a sacrificial reductant.

Cited by 14 publications

References 144 publications

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Sustainable routes to alkenes: applications of homogeneous catalysis to the dehydration of alcohols to alkenes

Contact Info

Product

Resources

About

Transition metal-catalyzed deoxydehydration: missing pieces of the puzzle

Abstract: Deoxydehydration (DODH) is a transformation that converts a vicinal diol into an olefin with the help of a sacrificial reductant.

Cited by 14 publications

References 144 publications

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReOx-Pd/CeO2 Catalyst

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReOx-Pd/CeO2 Catalyst

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Sustainable routes to alkenes: applications of homogeneous catalysis to the dehydration of alcohols to alkenes

Contact Info

Product

Resources

About

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst

Kinetic Modeling of Erythritol Deoxydehydration and Consecutive Hydrogenation over the ReO_x-Pd/CeO₂ Catalyst