Silicone waxes—synthesis via hydrosilylation in homo- and heterogeneous systems

Maciejewski, Hieronim; Wawrzyńczak, Agata; Dutkiewicz, Michał; Fiedorow, R.

doi:10.1016/j.molcata.2006.04.039

Cited by 44 publications

(27 citation statements)

References 26 publications

(21 reference statements)

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“…This result supports the hypothesis presented in Ref. [6] that a surface complex wa s for med by the int er act ion b et ween platinum and vinyl ligands.…”

Section: Platinum Species On Catalyst Surfacessupporting

confidence: 92%

“…Potential centers for the interaction between the metal and the support are vinyl groups, certain number of which (rather small one) could remain after the polymerization process. Such a hypothesis was put forward in our earlier paper [6] and in the present study we verified this conjecture by recording solid-state 13 C NMR spectra of SDB support and Pt/SDB catalyst (Fig. 10).…”

Section: Platinum Species On Catalyst Surfacessupporting

confidence: 85%

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Hydrosilylation on Hydrophobic Material Supported Platinum Catalysts

Wawrzyńczak¹,

Maciejewski²,

Fiedorow³

2015

Vestn. Volgogr. gos. univ., Ser. 10. Innov. deiat.

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Abstract. Catalytic activity of platinum supported on styrene-divinylbenzene copolymer and fluorinated carbons was tested in reactions of hydrosilylation of several olefins and the way of platinum binding to the support surface as well as platinum oxidation states were determined. Catalysts based on the above hydrophobic materials make it possible to obtain high yields of desirable reaction products and in most cases the highest activity was shown by polymer-supported platinum catalyst. In addition to hydrophobicity, another factor appeared to influence catalytic activity, namely the kind of the catalyst precursor. It was established that some amount of unpolymerized vinyl groups that were present on the polymeric support surface was involved in the interaction with platinum. XPS spectra enabled to determine that platinum was present on the catalyst surface in 0 and +2 oxidation states, however Pt 0 clearly predominated.

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“…This result supports the hypothesis presented in Ref. [6] that a surface complex wa s for med by the int er act ion b et ween platinum and vinyl ligands.…”

Section: Platinum Species On Catalyst Surfacessupporting

confidence: 92%

Section: Platinum Species On Catalyst Surfacessupporting

confidence: 85%

Hydrosilylation on Hydrophobic Material Supported Platinum Catalysts

Wawrzyńczak¹,

Maciejewski²,

Fiedorow³

2015

Vestn. Volgogr. gos. univ., Ser. 10. Innov. deiat.

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“…(ii) stability, resistance to oxidation, low surface tension, gas permeability, excellent dielectric properties, physiological inertness and moisture resistance (Maciejewski et al 2006;Gu et al 2009). And the end functional groups (OH, COOH) may optimize the properties of waxes similar to addition of additives as reported by Rezaei et al (2002).…”

Section: (C) Prospective Researchmentioning

confidence: 99%

Green waxes, adhesives and lubricants

Kong

Ruan

et al. 2010

Phil. Trans. R. Soc. A.

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General characteristics of waxes, adhesives and lubricants as well as the recent fundamental investigations on their physical and mechanical behaviour are introduced. The current R&D status for new type/generation of waxes, adhesives and lubricants from natural products is reviewed, with an emphasis on their tribological applications. In particular, some crucial issues and challenges relating to technological improvement and materials development are discussed. Based on the current predicted shortage of energy resources and environmental concerns, prospective research on the development of green waxes, adhesives and lubricants is suggested.

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“…There are also many possibilities of IL application in catalysis [16] i.e., as the catalyst itself, as a co-catalyst, as a catalyst activator, as the source of a new ligand for a catalytic metal center, or as a solvent for the reaction. There are many examples of catalytic processes involving ILs and one of them is the hydrosilylation reaction in which ILs immobilize platinum [17] or rhodium [18] catalysts used during biphasic reactions in batch. There have been several comprehensive papers regarding hydrosilylation reaction carried in the presence of ILs [19][20][21], but articles usually focus on a narrow scope of catalyst/IL systems, usually investigating in-depth one particular catalyst.…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquids as Solvents for Rhodium and Platinum Catalysts Used in Hydrosilylation Reaction

et al. 2016

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A group of imidazolium and pyridinium based ionic liquids has been synthetized, and their ability to dissolve and activate the catalysts used in hydrosilylation reaction of 1-octane and 1,1,1,3,5,5,5-heptamethyltrisiloxane was investigated. An organometallic catalyst as well as inorganic complexes of platinum and rhodium dissolved in ionic liquids were used, forming liquid solutions not miscible with the substrates or with the products of the reaction. The results show that application of such a simple biphasic catalytic system enables reuse of ionic liquid phase with catalysts in multiple reaction cycles reducing the costs and decreasing the amount of catalyst needed per mole of product.

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Silicone waxes—synthesis via hydrosilylation in homo- and heterogeneous systems

Cited by 44 publications

References 26 publications

Hydrosilylation on Hydrophobic Material Supported Platinum Catalysts

Hydrosilylation on Hydrophobic Material Supported Platinum Catalysts

Green waxes, adhesives and lubricants

Ionic Liquids as Solvents for Rhodium and Platinum Catalysts Used in Hydrosilylation Reaction

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