XPS structural characterization of Pd/SiO2 catalysts prepared by cogelation

Beketov, G.V.; Heinrichs, Benoı̂t; Pirard, Jean‐Paul; Chenakin, S. P.; Kruse, Norbert

doi:10.1016/j.apsusc.2013.09.145

Cited by 38 publications

(17 citation statements)

References 29 publications

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“…This value was also similar to the binding energy of Pd(NH 3 ) 4 Cl 2 reported by Luca et al (340.1 eV) [34] and Wang et al [35]. After calcination, the binding energy decreased to 336.3 eV which is concordant with Pd 2+ ions in PdO (336.4-336.6 eV) [36]. The Pd 3d 5/2 spectra of reduced catalyst is observed at 335.0 eV, which is in the range of Pd 0 (334.9-335.5 eV) [36,37], suggesting that Pd is in metallic state (Pd 0 ) after reduction.…”

Section: Catalyst Characterizationssupporting

confidence: 91%

“…After calcination, the binding energy decreased to 336.3 eV which is concordant with Pd 2+ ions in PdO (336.4-336.6 eV) [36]. The Pd 3d 5/2 spectra of reduced catalyst is observed at 335.0 eV, which is in the range of Pd 0 (334.9-335.5 eV) [36,37], suggesting that Pd is in metallic state (Pd 0 ) after reduction. XPS spectra of Pt/SiO 2 catalyst is shown in Fig.…”

Section: Catalyst Characterizationsmentioning

confidence: 75%

See 1 more Smart Citation

Catalytic upgrading of soybean oil methyl esters by partial hydrogenation using Pd catalysts

Thunyaratchatanon

Luengnaruemitchai

Chollacoop

et al. 2016

Fuel

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Section: Catalyst Characterizationssupporting

confidence: 91%

Section: Catalyst Characterizationsmentioning

confidence: 75%

Catalytic upgrading of soybean oil methyl esters by partial hydrogenation using Pd catalysts

Thunyaratchatanon

Luengnaruemitchai

Chollacoop

et al. 2016

Fuel

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“…Cs-O-Si, similar to the Si-O-M species [37][38][39][40], the bind energy 226 near 533 eV was due to Si-O (Si-O-Si, Si-O-H) from SiO 2 support 227 [41]. …”

mentioning

confidence: 93%

Vapor phase condensation of methyl acetate with formaldehyde to preparing methyl acrylate over cesium supported SBA-15 catalyst

Yan

Zhang

Ning

et al. 2015

Journal of Industrial and Engineering Chemistry

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“…The spectrum for the catalyst PdMo/PPH fresh presents a contribution at 334.0 eV corresponding to the Zr 3p signal coming from the carrier. Furthermore, the presence of PdO is also observed with a Pd 3d5/2 contribution at 337.1 eV, as well as its corresponding doublet [35].…”

Section: Catalyst Characterizationmentioning

confidence: 85%

Zirconium Phosphate Heterostructures as Catalyst Support in Hydrodeoxygenation Reactions

et al. 2017

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Abstract:A porous phosphate heterostructure (PPHs) formed by a layered zirconium(IV) phosphate expanded with silica galleries was prepared presenting a P/Zr molar ratio equal to 2 and a (Si + Zr)/P ratio equal to 3. This pillared zirconium phosphate heterostructure was used as a catalyst support for bi-functional catalysts based on noble metals (Pt or Pd) and molybdenum oxide containing a total metallic loading of 2 wt % and Pt(Pd)/Mo molar ratio equal to 1. The catalysts prepared were characterized by different experimental techniques and evaluated in the hydrodeoxygenation (HDO) reaction of dibenzofuran (DBF) as a model compound present in biomass derived bio-oil, at different reaction pressures. The catalyst characterization evidenced that a high dispersion of the active phase can be achieved by using these materials, as observed from transmission electron microscopy (TEM) characterization, where the presence of small particles in the nanometric scale is noticeable. Moreover, the textural and acidic properties of the phosphate heterostructure are barely affected by the incorporation of metals into its structure. Characterization results evidenced that the presented material is a good candidate to be used as a material support. In both cases, high conversions and high selectivities to deoxygenated compounds were achieved and the active phase played an important role. Thus, Pt/Mo presented a better hydrogenolysis capability, being more selective to O-free products; whereas, Pd/Mo showed a greater hydrogenation ability being more affected by changes in pressure conditions.

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XPS structural characterization of Pd/SiO2 catalysts prepared by cogelation

Cited by 38 publications

References 29 publications

Catalytic upgrading of soybean oil methyl esters by partial hydrogenation using Pd catalysts

Catalytic upgrading of soybean oil methyl esters by partial hydrogenation using Pd catalysts

Vapor phase condensation of methyl acetate with formaldehyde to preparing methyl acrylate over cesium supported SBA-15 catalyst

Zirconium Phosphate Heterostructures as Catalyst Support in Hydrodeoxygenation Reactions

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