Aqueous-phase reforming of ethylene glycol to hydrogen on Pd/Fe3O4 catalyst prepared by co-precipitation: Metal–support interaction and excellent intrinsic activity

Li, Jun; Sun, Bo; Hu, Jiye; Pei, Yan; Li, Hexing; Qiao, Minghua

doi:10.1016/j.jcat.2010.07.014

Cited by 99 publications

(65 citation statements)

References 43 publications

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“…The real potential of Pd/Fe3O4 in APR of biomass-derived oxygenated molecules was sustained and confirmed also by Qiao [128]. Pd-based catalysts were prepared by IWi over different metal oxide supports (Fe2O3, Cr2O3, NiO, Al2O3, ZrO2).…”

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

confidence: 60%

“…Pd/Fe 2 O 3 appears as the most suitable IWi catalyst for its superior activity, selectivity and stability in APR of EG. Moreover, the Pd/Fe 3 O 4 catalyst-prepared through co-precipitation-shows superior performance than those obtained with the impregnated Pd/Fe 2 O 3 sample, while the H 2 selectivity remains on the same order of magnitude (94.2%), confirming the importance of the preparation method used [128].…”

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

confidence: 66%

“…Diffraction patterns of the impregnated catalysts show peaks related to the metallic Pd species and corresponding support structures Fe2O3 and Fe3O4 [205]. Conversely, co-precipitated Pd/Fe catalysts shows only the Fe3O4 pattern and no peaks related to metallic palladium, indicating the presence of ultra-small palladium particles highly dispersed [128,135,138,206,207]. After 24 h of reaction, no structural modification of the Fe3O4 support was monitored, while the presence of the diffraction peak relative to the (111) plane of the palladium is indicative of Pd particles agglomeration [128].…”

Section: Physico-chemical Characterizationmentioning

confidence: 99%

“…On this regard, Asakura remarks that Pd nanoparticles can produce hydrogen-spillover onto the Fe oxide surface [138]; Qiao suggests that the promoting effect of Pd in the reduction of hematite to magnetite derives directly from the catalyst preparation method (co-precipitation) [128]; while Tsang highlights that the reduction of the iron support can be further promoted by the assistance of Zn(II) nanoparticles in co-precipitated Pd/Fe catalysts blended with Zn(II) [132,133].…”

Section: Hydrogen Temperature-programmed Reduction (H 2 -Tpr)mentioning

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

confidence: 60%

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

confidence: 66%