Carbon-supported bimetallic Pd–Fe catalysts for vapor-phase hydrodeoxygenation of guaiacol

Sun, Junming; Karim, Ayman M.; Zhang, He; Kovařík, Libor; Li, Xiaohong Shari; Hensley, Alyssa J. R.; McEwen, Jean‐Sabin; Wang, Yong

doi:10.1016/j.jcat.2013.05.020

Cited by 394 publications

(430 citation statements)

References 62 publications

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“…STEM-EDS shows, in the bimetallic sample, the presence of PdFe alloys [141,209]. The same authors synthesized Pd/Fe2O3 catalysts through the impregnation technique [142]: XRD patterns evidences the α-hematite for the iron oxide, whereas Pd is in the metallic form.…”

Section: Physico-chemical Characterizationmentioning

confidence: 96%

“…Wang et al characterized impregnated monometallic (5Pd/C and 10Fe/C) and bimetallic (2Pd10Fe/C) catalysts supported on carbon [141,209]. STEM-EDS shows, in the bimetallic sample, the presence of PdFe alloys [141,209].…”

Section: Physico-chemical Characterizationmentioning

confidence: 99%

“…Results similar to those obtained by Tsang and co-workers were obtained by other authors (Table 2). Wang et al coupled EXAFS analysis with DFT calculations to better understand the interaction between Pd and Fe nanoparticles on the 2Pd10Fe/C catalyst [141]. Two scenarios were investigated: the first with a top pure Pd layer on the surface of the Fe (110) host and the other with a Fe layer within the Pd(111) surface host.…”

Section: C-c and C-o Bond Breaking In C2-c6 Polyolsmentioning

confidence: 99%

“…Hydrogenolysis of guaiacol was reported to follow two possible reaction pathways ( Figure 15) [141,265]. In the first reaction sequence, guaiacol is first converted to methane and catechol.…”

Section: Hydrodeoxygenation Of Phenol Derivativesmentioning

confidence: 99%

“…Specifically, results obtained in important "green and sustainable" reactions will be presented including: aqueous-phase reforming [128][129][130], hydrogenolysis [131][132][133][134][135][136] and CTH [137,138] of C6-C2 polyols, hydrogenolysis and transfer hydrogenolysis of furfural [139,140], hydrodeoxygenation of phenol derivatives [141,142], HDO and CTH of aromatic ethers [143][144][145]. All these reactions will be discussed in details with the aim to show the unicity of heterogeneous Pd-Fe catalysts that are suitable for a wide reductive valorization processes of all constituent components of lignocellulosic biomasses having the potential to be successfully used in modern biorefineries to produce simple bulk compounds.…”

Section: Introductionmentioning

confidence: 99%

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Upgrading Lignocellulosic Biomasses: Hydrogenolysis of Platform Derived Molecules Promoted by Heterogeneous Pd-Fe Catalysts

et al. 2017

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Abstract:This review provides an overview of heterogeneous bimetallic Pd-Fe catalysts in the C-C and C-O cleavage of platform molecules such as C2-C6 polyols, furfural, phenol derivatives and aromatic ethers that are all easily obtainable from renewable cellulose, hemicellulose and lignin (the major components of lignocellulosic biomasses). The interaction between palladium and iron affords bimetallic Pd-Fe sites (ensemble or alloy) that were found to be very active in several sustainable reactions including hydrogenolysis, catalytic transfer hydrogenolysis (CTH) and aqueous phase reforming (APR) that will be highlighted. This contribution concentrates also on the different synthetic strategies (incipient wetness impregnation, deposition-precipitaion, co-precipitaion) adopted for the preparation of heterogeneous Pd-Fe systems as well as on the main characterization techniques used (XRD, TEM, H 2 -TPR, XPS and EXAFS) in order to elucidate the key factors that influence the unique catalytic performances observed.

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Section: Physico-chemical Characterizationmentioning

confidence: 96%