Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination

Baeza, J.A.; Calvo, L.; Alonso-Morales, Noelia; Heras, F. G. De Las; Eser, Semih; Rodrı́guez, Juan J.; Gilarranz, Miguel Á.

doi:10.1016/j.ces.2017.11.015

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…Based on the XRD results (Figure A) AlSBA‐3 support possesses better ordered structure than SBA‐3. In accordance with the literature data, this specific surface feature could improve activity of this catalyst in aqueous phase hydrodechlorination of the chloroorganic compounds ,,. It was shown that the application of ordered materials as the supports for active phase leads to formation of uniformly dispersed, resistant for agglomeration and leaching, rather small metal nanoparticles.…”

Section: Resultssupporting

confidence: 86%

Aqueous‐Phase Hydrodechlorination of Trichloroethylene on Ir Catalysts Supported on SBA‐3 Materials

et al. 2018

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This work investigates the catalytic properties of silica and aluminosilicate SBA-3 supported iridium catalysts in aqueous phase hydrodechlorination of trichloroethylene. SBA-3, AlSBA-3, Ir/SBA-3 and Ir/AlSBA-3 were thoroughly characterized by XRD, BET, TPR-H 2 , H 2 chemisorption, TPD-NH 3 and investigated in catalytic removal of trichloroethylene from water in batch reactor under mild operation conditions. Uniformly dispersed small iridium nanoparticles (~3 nm) was found to be active in catalytic purification of water from chloroorganic compound. The studies showed that the differences in catalytic behavior of Ir/SBA-3 and Ir/AlSBA-3 depended on the properties of the support. The best catalytic properties in purification of water from trichloroethylene was obtained for Ir supported on more hydrophilic and ordered AlSBA-3 with acid sites.

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Section: Resultssupporting

confidence: 86%

Aqueous‐Phase Hydrodechlorination of Trichloroethylene on Ir Catalysts Supported on SBA‐3 Materials

et al. 2018

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“…Previous works for Pd supported on γ-alumina and Al-pillared clays 50,51 reported activity values of 0.7 and 0.3 mmol•gPd -1 •min -1 , respectively, at 30ºC. Carbon supports showed to enhance the activity of Pd catalysts, thus at 30ºC activity values of 55.6 mmol•gPd -1 •min -1 were reported for non-porous N-doped carbon 39 , and 10.7-173.5 mmol•gPd -1 •min -1 for carbon blacks, carbon fibers and graphitized carbons 52 . An activity value of 101 mmol•gPd -1 •min -1 .…”

Section: Figure 5 Time-course Evolution Of 4-cp and Phenol Upon Hydrodechlorination With A) Cmk-3/pd And B) N-cmk-3/pd (254 Mg Pd•l -1 3mentioning

confidence: 94%

N-Doped CMK-3 Carbons Supporting Palladium Nanoparticles as Catalysts for Hydrodechlorination

Ruiz-García

Heras

Calvo

et al. 2019

Ind. Eng. Chem. Res.

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“…A common approach for removing halogen atoms from organic compounds is catalytic hydrodehalogenation. [6][7][8][9][10][11][12][13][14] Because this process utilizes H2 as a reagent, it requires pressurized equipment and involves hazards such as high flammability or explosion. In addition, H2 is mostly generated via natural gas steam reforming that produces CO2, and therefore has an important environmental footprint.…”

Section: Introductionmentioning

confidence: 99%

Efficient Transfer Hydrodehalogenation of Halophenols Catalyzed by Pd Supported on Ceria

Naik

Kunal

Liu³

et al. 2022

Preprint

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The transfer hydrodehalogenation (THD) of halophenols is efficiently catalyzed by palladium supported on high surface ceria (Pd/CeO2) under mild conditions (65 °C) using isopropanol (iPrOH) as hydrogen source. The reactivity of 4-halophenols (4-X-PhOH) varies in the order 4-F-PhOH > 4-Cl-PhOH > 4-Br-PhOH >> 4-I-PhOH and appears to be controlled by the desorption of halides from the catalyst surface. Kinetic analysis of the reactions and temperature programmed surface reaction (TPSR) experiments indicate that oxidative addition of C-X bonds and H-abstraction from isopropoxide compete for the same active sites on Pd. The catalyst was able to conduct the THD of various hazardous pollutants and emerging contaminants (DDT, pentachlorophenol, pentafluorophenol and triclosan).

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Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination

Cited by 15 publications

References 35 publications

Aqueous‐Phase Hydrodechlorination of Trichloroethylene on Ir Catalysts Supported on SBA‐3 Materials

Aqueous‐Phase Hydrodechlorination of Trichloroethylene on Ir Catalysts Supported on SBA‐3 Materials

N-Doped CMK-3 Carbons Supporting Palladium Nanoparticles as Catalysts for Hydrodechlorination

Efficient Transfer Hydrodehalogenation of Halophenols Catalyzed by Pd Supported on Ceria

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