Kinetic study of selective hydrogenation of 2-methyl-3-butyn-2-ol over Pd-containing hypercrosslinked polystyrene

Nikoshvili, Linda Zh.; Makarova, Alexandra S.; Lyubimova, N. A.; Быков, А. А.; Сидоров, А. И.; Tyamina, I.; Matveeva, Valentina G.; Sulman, Esther M.

doi:10.1016/j.cattod.2015.02.033

Cited by 30 publications

(27 citation statements)

References 30 publications

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“…According to the high resolution Pd 3d spectrum, the values of the binding energy of Pd 3d5/2 in assynthesized 1.5%-Pd/HPS are 338.6 eV (binding energy of (CH3CN)2PdCl2 was found to be equal 338.7 eV), 337.7 eV (PdCl2) [22], and 336.1 eV (small clusters of Pd) [23]. The existence of PdCl2 in the catalyst can be ascribed to the removal of acetonitrile ligands in (CH3CN)2PdCl2 due to complexation with the HPS amino groups as was also observed for hydrogenation catalysts in a previous study [24]. On the surface of the other two samples (1%-Pd/HPS and 0.5%-Pd/HPS) small amounts of Pd(0) were also found (binding energy of 335.2 eV) that can be due to the partial reduction of Pd during the catalyst synthesis ( Table 2).…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 61%

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Nikoshvili

Nemygina

Быков

et al. 2015

Bull. Chem. React. Eng. Catal.

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This paper describes synthesis of Pd-containing catalysts of Suzuki cross-coupling based on aminofunctionalized hypercrosslinked polystyrene. The investigation of the influence of a palladium concentration, solvent composition, temperature, type and concentration of base, and a type of a gas phase was carried out. It was shown that the catalyst developed allows achieving conversion of 4-bromoanisole higher than 98% for less than 1 h at mild reaction conditions and in the absence of a phase transfer agent. Catalyst reduction was found to result in formation of small Pd nanoparticles (about 3 nm in diameter) and a large number of Pd clusters, which are highly active in Suzuki-Miyaura cross-coupling (conversion of 4-bromoanisole reached 90.2% for 3 h).

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Section: X-ray Photoelectron Spectroscopymentioning

confidence: 61%

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Nikoshvili

Nemygina

Быков

et al. 2015

Bull. Chem. React. Eng. Catal.

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“…The understanding about the hydrogenation of medium-or long-chain compounds is of great importance; [5][6][7] however, the behavior of these systems is still under study. In this context, several authors have studied reactions of selective hydrogenation of medium/ high molecular weight alkynes (C 5 -C 7 ), 6,8-10 3-methyl-1-pentyn-3-ol, 11 2-methyl-3-butyn-2-ol, 12 phenylacetylene, 13 and others. 14 Additionally, several authors have studied the alkenes production from petrochemical streams containing alkyne and alkadiene impurities, [15][16][17][18] and these compounds need to be removed before the alkene is used in polymerization processes.…”

Section: Introductionmentioning

confidence: 99%

Role of the support and chloride during the purification of 1‐pentene in alkyne/alkene streams over Pd catalysts

Cordoba

Betti

Bovier

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Pd nanoparticles over different supports were evaluated during the alkyne selective hydrogenation of medium chain (C 7 and C 5 ) and the 1-pentene purification at mild operational conditions (150 kPa and 303 K). The role of support and chloride was investigated; γ-Al 2 O 3 , γ-Al 2 O 3 modified with Mg, CaCO 3 and activated carbon were used as supports, and PdCl 2 as precursor salt. The classical Lindlar catalyst was used as reference.RESULTS: Surface acidity of supports, active sites dispersion and surface species (MgO, Pd x Cl y O z and/or functional groups) can favor or disfavor the desorption of 1-alkene during the purification of 1-pentene stream. The smallest particle sizes (3.8-10.0 nm) favor the dissociative adsorption of hydrogen over Pd°active sites, promoting good catalytic behavior. The best synthesized catalysts are Pd/Al-Mg and Pd/Ca, and their high selectivity (≥90%) is favored by the presence of superficial acidic Lewis sites. On the contrary, lower selectivity (74-80%) is assessed on catalysts with Brönsted acidic sites (Pd/Al and Pd/RX3) that favored the undesired overhydrogenation or isomerization reactions. CONCLUSION:The geometric and electronic properties of the support have a major influence on the activity and selectivity of the catalysts. Low loaded Pd catalysts supported on Al 2 O 3 -Mg and CaCO 3 (Pd/Al-Mg, Pd/Ca) can be used for the purification of medium or large terminal alkenes at mild reaction conditions as an alternative to the toxic Lindlar commercial catalyst.

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“…From as ustainability standpoint, the propargylic alcohols precursors of ACCs are prepared from oil-based acetylene. [95] 3d is am oderately reactive allyl monomer. [96] The cationic homopolymerizationo f3d promoted by Lewis acidic metal halidesh as been recently carriedo ut for the synthesis of microcomposite materials for Li-based batteries.…”

Section: Other Functionalized Monocarbonatesmentioning

confidence: 99%

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO₂ Utilization

et al. 2019

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Given the large amount of anthropogenic CO2 emissions, it is advantageous to use CO2 as feedstock for the fabrication of everyday products, such as fuels and materials. An attractive way to use CO2 in the synthesis of polymers is by the formation of five‐membered cyclic organic carbonate monomers (5CCs). The sustainability of this synthetic approach is increased by using scaffolds prepared from renewable resources. Indeed, recent years have seen the rise of various types of carbonate syntheses and applications. 5CC monomers are often polymerized with diamines to yield polyhydroxyurethanes (PHU). Foams are developed from this type of polymers; moreover, the additional hydroxyl groups in PHU, absent in classical polyurethanes, lead to coatings with excellent adhesive properties. Furthermore, carbonate groups in polymers offer the possibility of post‐functionalization, such as curing reactions under mild conditions. Finally, the polarity of carbonate groups is remarkably high, so polymers with carbonates side‐chains can be used as polymer electrolytes in batteries or as conductive membranes. The target of this Review is to highlight the multiple opportunities offered by polymers prepared from and/or containing 5CCs. Firstly, the preparation of several classes of 5CCs is discussed with special focus on the sustainability of the synthetic routes. Thereafter, specific classes of polymers are discussed for which the use and/or presence of carbonate moieties is crucial to impart the targeted properties (foams, adhesives, polymers for energy applications, and other functional materials).

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Kinetic study of selective hydrogenation of 2-methyl-3-butyn-2-ol over Pd-containing hypercrosslinked polystyrene

Cited by 30 publications

References 30 publications

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Role of the support and chloride during the purification of 1‐pentene in alkyne/alkene streams over Pd catalysts

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO₂ Utilization

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Kinetic study of selective hydrogenation of 2-methyl-3-butyn-2-ol over Pd-containing hypercrosslinked polystyrene

Cited by 30 publications

References 30 publications

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene

Role of the support and chloride during the purification of 1‐pentene in alkyne/alkene streams over Pd catalysts

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO2 Utilization

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Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO₂ Utilization