Pt−Fe2O3 catalytic system for hydrogenation reactions

Сокольский, Д. В.; Анисимова, Н. В.; Жармагамбетова, А. К.; Mukhamedzhanova, S. G.; Edygenova, L.N.

doi:10.1007/bf02128096

Cited by 25 publications

(17 citation statements)

References 7 publications

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“…The Pd/Al 2 O 3 catalyst exhibited 2% lower selectivity but threefold higher activity than Pd/ZnO. PdZn phase was detected by XPS also in the nontreated sample at ambient conditions [41,64]. Despite the high activity for path a, both catalysts did not suppress path d, but the rate of MBE hydrogenation was lower for Pd/ZnO than for Pd/Al 2 O 3 .…”

Section: Catalytic Performance Of Pd/zno/smf Catalyst With and Withoumentioning

confidence: 92%

“…After the treatment, characteristic peaks of palladium were no longer present in an XRD pattern. At the same time, peaks at 2θ of 41 (Fig. 4), which are characteristic of the PdZn alloy.…”

Section: Characterization Of Lindlar and Pd/zno/smf Catalystsmentioning

confidence: 92%

“…This can be rationalized by the presence of the PdZn phase; path d was suppressed more at a higher content of PdZn phase. The PdZn phase is known to provide a high selectivity to MBE [41,60,64].…”

Section: Catalytic Performance Of Pd/zno/smf Catalyst With and Withoumentioning

confidence: 99%

“…For MBY hydrogenation in ethanol as solvent, selectivity to MBE has been found to increase in the following order: Pd black < Pd/C < Pd/Al 2 O 3 < Pd/BaSO 4 < Pd/MgO < Pd/ZnO ∼ = Pd/CaCO 3 [33]. The ZnO is the support of choice, because zinc also acts as a promoter [39][40][41][42][43][44]. Promoters are known to affect the adsorption of alkynols and alkenols on Pd nanoparticles and to suppress the formation of β-PdH phase, responsible for the direct alkynol hydrogenation to saturated alcohol [49].…”

Section: Introductionmentioning

confidence: 99%

“…The MBY hydrogenation reaction is structure-sensitive; Pd/Al 2 O 3 catalyst with monodispersed 2.5-nm particles showed sixfold lower activity and lower selectivity (75 vs 89%) compared with Pd/Al 2 O 3 containing monodispersed 7.5-nm particles [31]. The performance of Pd catalyst in alkynol hydrogenation is strongly influenced not only by the Pd dispersion [31,32], but also by the nature of the support [28,33], the promoters to active metals [3,9,[34][35][36][37][38][39][40][41][42][43][44], and use of additives [7,[45][46][47][48]. For MBY hydrogenation in ethanol as solvent, selectivity to MBE has been found to increase in the following order: Pd black < Pd/C < Pd/Al 2 O 3 < Pd/BaSO 4 < Pd/MgO < Pd/ZnO ∼ = Pd/CaCO 3 [33].…”

Section: Introductionmentioning

confidence: 99%

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Structured catalyst of Pd/ZnO on sintered metal fibers for 2-methyl-3-butyn-2-ol selective hydrogenation

Semagina

Grasemann

Xanthopoulos

et al. 2007

Journal of Catalysis

111

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Section: Catalytic Performance Of Pd/zno/smf Catalyst With and Withoumentioning

confidence: 92%

“…After the treatment, characteristic peaks of palladium were no longer present in an XRD pattern. At the same time, peaks at 2θ of 41 (Fig. 4), which are characteristic of the PdZn alloy.…”

Section: Characterization Of Lindlar and Pd/zno/smf Catalystsmentioning

confidence: 92%

Section: Catalytic Performance Of Pd/zno/smf Catalyst With and Withoumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structured catalyst of Pd/ZnO on sintered metal fibers for 2-methyl-3-butyn-2-ol selective hydrogenation

Semagina

Grasemann

Xanthopoulos

et al. 2007

Journal of Catalysis

111

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Intermetallic Compounds in Catalysis

Armbrüster

2011

Encyclopedia of Catalysis

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In catalysis, intermetallic compounds play an important role as precursors for skeletal catalysts or can be formed under reaction conditions and influence the catalytic properties significantly. They can also be applied as catalysts in an unsupported state in a large number of reactions. Intermetallic compounds are structurally more complex than elemental metals or substitutional alloys and thus offer a broad range of different crystal and electronic structures. In addition, the often partly covalent bonding in the compounds increases their stability under reaction conditions and enables an innovative realization of geometric and electronic concepts. This article summarizes the work in the field, aiming at presenting the different ideas and not at giving a full literature review. Special emphasis is put on the knowledge‐based development, which becomes feasible using unsupported and in situ stable intermetallic compounds as catalysts.

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Enhancing Metal–Support Interactions by Molybdenum Carbide: An Efficient Strategy toward the Chemoselective Hydrogenation of α,β‐Unsaturated Aldehydes

Shao

Shu

et al. 2016

Chemistry A European J

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Metal-support interactions are desired to optimize the catalytic turnover on metals. Herein, the enhanced interactions by using a Mo2C nanowires support were utilized to modify the charge density of an Ir surface, accomplishing the selective hydrogenation of α,β-unsaturated aldehydes on negatively charged Ir(δ-) species. The combined experimental and theoretical investigations showed that the Ir(δ-) species derive from the higher work function of Ir (vs. Mo2C) and the consequently electron transfer. In crotonaldehyde hydrogenation, Ir/Mo2C delivered a crotyl alcohol selectivity as high as 80%, outperforming those of counterparts (<30%) on silica. Moreover, such electronic metal-support interactions were also confirmed for Pt and Au, as compared with which, Ir/Mo2C was highlighted by its higher selectivity as well as the better activity. Additionally, the efficacy for various substrates further verified our Ir/Mo2C system to be competitive for chemoselective hydrogenation.

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Pt−Fe2O3 catalytic system for hydrogenation reactions

Cited by 25 publications

References 7 publications

Structured catalyst of Pd/ZnO on sintered metal fibers for 2-methyl-3-butyn-2-ol selective hydrogenation

Structured catalyst of Pd/ZnO on sintered metal fibers for 2-methyl-3-butyn-2-ol selective hydrogenation

Intermetallic Compounds in Catalysis

Enhancing Metal–Support Interactions by Molybdenum Carbide: An Efficient Strategy toward the Chemoselective Hydrogenation of α,β‐Unsaturated Aldehydes

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