Preparation of the Pd/C catalysts: A molecular-level study of active site formation

Simonov, P.A.; Troitskii, S. Yu.; Likholobov, V. A.

doi:10.1007/bf02771428

Cited by 82 publications

(45 citation statements)

References 20 publications

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“…The catalyst containing Pd supported on mesoporous carbon subunit (surface area 358 m 2 /g) with 4 wt% loading of Pd was prepared by hydrolysis of H 2 PdCl 4 at pH 5-6 to yield so-called polynuclear hydroxocomplexes of palladium followed by their adsorption on carbon and increasing of pH slurry up to Na/Pd ratio 1:2 [16]. The carbon subunit support was pre-oxidized by treating it with 5 wt% HNO 3 during 17 h, then washed by distilled water and dried.…”

Section: Catalyst Preparation Methodsmentioning

confidence: 99%

Catalytic Deoxygenation of Stearic Acid and Palmitic Acid in Semibatch Mode

et al. 2009

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The deoxygenation experiments of different reactants, i.e., pure palmitic acid, stearic acid, and a technical grade stearic acid containing a mixture of 59% of palmitic and 40% of stearic acid were successfully performed over 4 wt% Pd/C mesoporous catalyst at 300°C under 17 bar of 5% H 2 in argon. The main product in catalytic deoxygenation of saturated fatty acids, C16 and C18, were aliphatic chain length hydrocarbons containing one less carbon than the corresponding acid. Additionally it was found that the deoxygenation rates of different reactant were independent on carbon chain length of its fatty acids.

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Section: Catalyst Preparation Methodsmentioning

confidence: 99%

Catalytic Deoxygenation of Stearic Acid and Palmitic Acid in Semibatch Mode

et al. 2009

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“…The catalyst was prepared by hydrolysis of H 2 PdCl 4 at pH 5-6 to yield so-called polynuclear hydroxocomplexes of palladium followed by their adsorption on carbon and increasing of pH slurry up to Na/Pd ratio 1:2 [15]. Prior to the catalyst preparation the carbon was pre-oxidized by treating it by 5 wt.% HNO 3 during 17 h, then washed by distilled water and dried.…”

Section: Catalyst Preparation and Characterization Methodsmentioning

confidence: 99%

Synthesis of Biodiesel via Deoxygenation of Stearic Acid over Supported Pd/C Catalyst

et al. 2008

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“…The 1 wt% Pd/C (A) catalyst was prepared by hydrolysis of H 2 PdCl 4 (aqueous) with Na 2 CO 3 (aqueous) at 1:21 molar ratio to form so-called polynuclear hydroxocomplexes of palladium (II) and thereafter depositing palladium(II) onto the carbon surface [11,12]. The filtered catalyst was washed with distilled deionized water after 6 h of adsorption at room temperature.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…Catalytic deoxygenation for synthesis of biodiesel has been intensively investigated during the recent years [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Several feedstocks, such as triglycerides, tall oil fatty acids, and several saturated and unsaturated fatty acids and their esters were used as feedstocks.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Deoxygenation of C18 Fatty Acids Over Mesoporous Pd/C Catalyst for Synthesis of Biofuels

et al. 2011

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Deoxygenation was systematically investigated using either stearic, oleic or linoleic acids as a feedstock at 300°C under 1 vol% hydrogen in argon over a mesoporous Pd/C (Sibunit) catalyst producing one less carbon containing, diesel-like hydrocarbons. The results revealed that catalyst activity and selectivity increased with less unsaturated feedstock. The main products in the case of stearic acid were desired C17 hydrocarbons, whereas the amounts of C17 aromatic compounds increased in case of oleic and linoleic acids. Catalyst deactivation was relatively prominent in linoleic acid deoxygenation giving only 3% conversion of fatty acids in 330 min. The deactivation originated from the formation of C17 aromatic compounds and fatty acid dimers, which was confirmed by size exclusion chromatographic analysis. The latter compounds were formed via Diels-Alder reaction.

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Preparation of the Pd/C catalysts: A molecular-level study of active site formation

Cited by 82 publications

References 20 publications

Catalytic Deoxygenation of Stearic Acid and Palmitic Acid in Semibatch Mode

Catalytic Deoxygenation of Stearic Acid and Palmitic Acid in Semibatch Mode

Synthesis of Biodiesel via Deoxygenation of Stearic Acid over Supported Pd/C Catalyst

Catalytic Deoxygenation of C18 Fatty Acids Over Mesoporous Pd/C Catalyst for Synthesis of Biofuels

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