Glycerol hydrogenolysis over Ru-Cu bimetallic catalysts supported on modified zirconias

Salgado, Ana Luiza P.; Araújo, Felipe C.; Soares, André Von‐Held; Xing, Yutao; Passos, Fábio B.

doi:10.1016/j.apcata.2021.118359

Cited by 14 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among all the catalysts, Ru-Cu/m-ZrO 2 showed the highest selectivity toward 1,2-PDO (89%), and the best performance at 180 °C. 140 Similar to Ru-Cu catalysts, bi-metallic Ni-Cu/Al 2 O 3 catalysts also presented better catalytic performance towards 1,2-PDO production compared with mono-metallic ones due to the synergy between Cu and Ni. Cu promotes the reducibility of NiO and Ni enhances Cu dispersion.…”

Section: Cu Based Bi-metallic Catalystsmentioning

confidence: 90%

See 1 more Smart Citation

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

2022

View full text Add to dashboard Cite

show abstract

Section: Cu Based Bi-metallic Catalystsmentioning

confidence: 90%

“…Among all the catalysts, Ru–Cu/ m -ZrO 2 showed the highest selectivity toward 1,2-PDO (89%), and the best performance at 180 °C. 140…”

Section: Glycerol Hydrogenolysis To 12-propanediolmentioning

confidence: 99%

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

2022

View full text Add to dashboard Cite

show abstract

“…Recently, Salgado et al (2021) investigated the series of supported Cu-Ru bimetallic catalysts and observed that addition of Cu reduced the glycerol conversion from 30% to 14%; however it increased the C–O cleavage and diminished the C–C bond breakage that led to higher selectivity to 1,2-PDO; selectivity increased to 89% from 60%. Further, the catalyst was found to be stable for two cycles of 12 h. Compared to previous studies, conversion was low, indicating that only Cu- Ru is not desirable, but their interaction and selection of support play a crucial role in selective conversion of glycerol …”

Section: Classification and Overview Of Catalysts Developed For Liqui...mentioning

confidence: 67%

Review of the Development of Heterogeneous Catalysts for Liquid and Vapor Phase Hydrogenolysis of Glycerol to Propylene Glycol (1,2-Propanediol): State-of-the-Art and Outlook

Pandey

Biswas

2023

Energy Fuels

View full text Add to dashboard Cite

In the last two decades, various glycerol value addition techniques have been developed and discussed in the literature. Among all these processes, conversion of glycerol to 1,2-propanediol (1,2-PDO) has been recognized as one of the promising and commercially attractive glycerol value addition routes. This review is an attempt to scan out the progress in catalysts design and development for liquid and vapor phase glycerol hydrogenolysis for the production of 1,2-PDO. The development of supported and mixed metal oxide catalysts with their novel catalytic characteristics for glycerol conversion and 1,2-PDO selectivity has been scrutinized systematically. It was observed that among the nonnoble metal catalysts, Cu-based catalysts have shown promising activity toward 1,2-PDO; however, their stability is an issue. Among noble metals, Pt-and Ru-based catalysts were reported active for glycerol conversion. Comparatively, catalysts composed of Pt, Ru, Pd as a noble metal, and Cu as a non-noble metal have resulted in higher catalytic activity and 1,2-PDO selectivity. This review also summarizes different reaction pathways for hydrogenolysis of glycerol to 1,2-PDO, the effect of additives (solid acid and base), and methods of catalyst preparation on the catalyst performances. Further, glycerol hydrogenolysis with in situ H 2 production by glycerol reforming or by chemical transfer hydrogen using various hydrogen donors and the effect of different solvents on the glycerol hydrogenolysis process are also discussed. Reaction kinetic models are also included at the end.

show abstract

“…In the presence of Lewis acid sites, the cleavage of the C-O bond occurs preferentially at the terminal carbons, leading to the dehydration of glycerol and forming the acetol intermediate, which after the hydrogenation process forms the 1,2-PDO [13,14]. In the literature, different materials with active phases formed by metallic sites and Lewis sites are used, and examples Ru-WO 3 /ZrO 2 [24], Pt/C [25], Ni/Nb [26], Nb/Pd−Zr−Al [27], Ni/Al-Fe [10]. In some studies, materials with only one metallic phase are also applied to obtain 1,2-PDO, as in the work carried out by AZRI et al [9,28], in which Cu supported on different materials (dolomite, Al 2 O 3 , bentonite, and montmorillonite) acted both in the dehydration step and in the hydrogenation step.…”

Section: Introductionmentioning

confidence: 99%

“…In hydrogenolysis reactions, the most used supports are SiO 2 , ZrO 2 and Al 2 O 3 . Other materials such as zeolites, clays, and mesoporous materials have also been reported for this use [19,24,25]. Silicon-based mesoporous materials, such as SBA-15, present favorable structural characteristics for application as catalyst support, such as high surface area, highly ordered hexagonal channels, thick pore walls, high hydrothermal and mechanical stability, long cycle life, low toxicity and corrosiveness [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Methods for Pt-WO3/SBA-15 materials synthesis for glycerol conversion

et al. 2023

View full text Add to dashboard Cite

Glycerol has applications as a raw material in different industrial processes, however, its supply exceeds demand. An alternative to increase the added value of this feedstock is its conversion into high added-value chemical products through dehydration and hydrogenation reactions, from which 1,2-PDO and 1,3-PDO can be obtained. To develop catalysts that increase the conversion and selectivity of these processes, materials of 2% Pt and 10% WO 3 supported on SBA-15 were studied. Two methods were used for incipient wetness impregnation: sequential impregnation, with impregnation steps for each species, and co-impregnation, with a single impregnation step for both species. From the analysis of XRD, XRF, N 2 isotherms, SEM, EDS, FTIR, and pyridine FTIR spectroscopy, it was possible to observe the influence of these methods on the structural and textural properties. It was verified that the co-impregnation provided a better dispersion of the WO 3 species on the surface of the SBA-15 and that the reduction process, for both methodologies employed, showed an improvement in the metallic dispersion. The better dispersion of WO 3 species also resulted in a greater formation of Brønsted acid sites for the co-impregnation method, with a predominance of Lewis sites in the structure of the catalysts obtained by both methods.

show abstract

Glycerol hydrogenolysis over Ru-Cu bimetallic catalysts supported on modified zirconias

Cited by 14 publications

References 49 publications

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

A review on non-noble metal catalysts for glycerol hydrodeoxygenation to 1,2-propanediol with and without external hydrogen

Review of the Development of Heterogeneous Catalysts for Liquid and Vapor Phase Hydrogenolysis of Glycerol to Propylene Glycol (1,2-Propanediol): State-of-the-Art and Outlook

Methods for Pt-WO3/SBA-15 materials synthesis for glycerol conversion

Contact Info

Product

Resources

About