Silica‐Supported FePd Bimetallic Particles: Formation from Mixed‐Metal Clusters and Catalytic Activity

Braunstein, Pierre; Devenish, R.W.; Gallezot, P.; Heaton, Brian T.; Humphreys, C. J.; Kervennal, J.; Mulley, Suzanne; Ries, Michel

doi:10.1002/anie.198809271

Cited by 40 publications

(9 citation statements)

References 8 publications

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“…The average particle size of Pd alloys is nanometric (1-3 nm), indicating that the Zn(II) addition does not influence the particle size [123,132]. Nanometric (1-2 nm) and well dispersed PdFe clusters can be obtained also through the thermal decomposition method, as reported by Braunstein [208].…”

Section: Physico-chemical Characterizationsupporting

confidence: 54%

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 Characterizationsupporting

confidence: 54%

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

et al. 2017

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“…Braunstein et al. reported that extremely small PdFe clusters can be prepared by the decomposition of [FePd 2 (CO) 4 (dppm) 2 ] (dppm=1,1‐bis(diphenylphosphino)methane) or [Fe 2 Pd 2 (CO) 5 (NO) 2 (dppm) 2 ] on support SiO 2 29. Typical transmission electron microscopy (TEM) images are shown in Figure 1; the average particle size can be as small as 1–2 nm.…”

Section: Preparation Of Bimetallic Npsmentioning

confidence: 99%

Recent Developments in Palladium‐Based Bimetallic Catalysts

2015

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As one of the alternative metals to platinum, which supports a wide range of applications in chemistry and catalysis in industry, palladium increasingly receives attention because of its similar physicochemical properties. However, Pd is generally less expensive than Pt and has a richer natural reserve. Herein, some recently developed techniques for the preparation and characterization of Pd‐based bimetallic catalysts are reviewed. The impact on catalytic reactions of interest, including hydrogenation, dehydrogenation, hydrogenolysis, reforming, the oxygen reduction reaction, and hydrodesulfurization are also discussed. It is shown that the catalytic performance of Pd‐based bimetallic catalysts is strongly dependent on the geometric and electronic states of Pd, which can be significantly affected by blended foreign element(s). Rationalization of the structure–activity relationship can provide useful guidelines to the fine tuning of these important catalytic reactions.

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“…A heterogeneous, bimetallic Fe-Pd complex catalyzes the carbonylation of 2-nitrophenol under 200 atm pressure of CO with high yields. [16,17] Additionally, the ruthenium-or palladium-catalyzed reductive carbonylation of o-nitrobenzylalcohols gives the corresponding 1,4-dihydro-2H-3,1-benzoxazin-2-one derivatives. [18] 2-Benzoxazolone can also be prepared in high yields by reductive carbonylation of 2-nitrophenol with a high pressure of carbon monoxide and a stoichiometric amount of sulfur or selenium in water in the presence of NEt 3 .…”

Section: Introductionmentioning

confidence: 99%

Selenium‐Catalyzed Reductive Carbonylation of 2‐Nitrophenols to2‐Benzoxazolones

et al. 2005

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2‐Benzoxazolones or 2‐benzimidazolones are synthesized in moderate to good yields in the presence of a base (KOH, NaOH, KOAc, NEt3, DBU) at atmospheric pressure or under a high pressure of CO by one‐pot reductive carbonylation of 2‐nitrophenols or 2‐nitroaniline in the presence of selenium as catalyst. Besides the effect of base, the effects of solvent and temperature on the reaction were investigated at high or atmospheric pressure. Contrasting results were obtained for 2‐benzoxazolones or 2‐benzimidazolone at high and atmospheric pressures. Moreover, phase‐transfer catalysis was exhibited. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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Silica‐Supported FePd Bimetallic Particles: Formation from Mixed‐Metal Clusters and Catalytic Activity

Cited by 40 publications

References 8 publications

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

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

Recent Developments in Palladium‐Based Bimetallic Catalysts

Selenium‐Catalyzed Reductive Carbonylation of 2‐Nitrophenols to2‐Benzoxazolones

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