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Hydrogenation of Butadiene–Styrene Rubber over Palladium Nanoparticles Synthesized In Situ: Selection of Stabilizer
https://orcid.org/https://orcid.org/0000-0002-6125-902X
https://orcid.org/https://orcid.org/0000-0001-5490-8610
https://orcid.org/https://orcid.org/0000-0001-9297-4950
Nanoparticles were synthesized from water-soluble and oil-soluble palladium precursors, specifically palladium acetate and palladium 2-ethylhexanoate, in cyclohexane/benzene solutions of butadiene–styrene rubber (BSR). Palladium nanoparticles prepared in situ were demonstrated to be active in the hydrogenation of the aromatic and olefin moieties of BSR. The degrees of hydrogenation of aromatic moieties at 140°C and 5 MPa hydrogen pressure in the presence of the catalysts synthesized from palladium acetate and palladium 2-ethylhexanoate were 29 and 77%, respectively. In the case of the water-soluble precursor, various surfactants were added to the reaction mixture as stabilizers of palladium particles in an attempt to enhance the degree of hydrogenation. Among them, the highest degree of hydrogenation was achieved in the presence of acetonitrile, compared to the reaction mixtures that contained sucrose, polyethylene glycol, or glycerol additives. The effect of the solvent composition (specifically, of the benzene to cyclohexane ratio) on the degree of BSR hydrogenation was identified. The optimum benzene to cyclohexane ratio is 2 : 8. In this case, the degrees of hydrogenation of aromatic and olefin moieties using palladium 2-ethylhexanoate reach 85 and 94%, respectively.
Hydrogenation of Butadiene–Styrene Rubber over Palladium Nanoparticles Synthesized In Situ: Selection of Stabilizer
https://orcid.org/https://orcid.org/0000-0002-6125-902X
https://orcid.org/https://orcid.org/0000-0001-5490-8610
https://orcid.org/https://orcid.org/0000-0001-9297-4950
Nanoparticles were synthesized from water-soluble and oil-soluble palladium precursors, specifically palladium acetate and palladium 2-ethylhexanoate, in cyclohexane/benzene solutions of butadiene–styrene rubber (BSR). Palladium nanoparticles prepared in situ were demonstrated to be active in the hydrogenation of the aromatic and olefin moieties of BSR. The degrees of hydrogenation of aromatic moieties at 140°C and 5 MPa hydrogen pressure in the presence of the catalysts synthesized from palladium acetate and palladium 2-ethylhexanoate were 29 and 77%, respectively. In the case of the water-soluble precursor, various surfactants were added to the reaction mixture as stabilizers of palladium particles in an attempt to enhance the degree of hydrogenation. Among them, the highest degree of hydrogenation was achieved in the presence of acetonitrile, compared to the reaction mixtures that contained sucrose, polyethylene glycol, or glycerol additives. The effect of the solvent composition (specifically, of the benzene to cyclohexane ratio) on the degree of BSR hydrogenation was identified. The optimum benzene to cyclohexane ratio is 2 : 8. In this case, the degrees of hydrogenation of aromatic and olefin moieties using palladium 2-ethylhexanoate reach 85 and 94%, respectively.
Hydrogenation of Butadiene–Styrene Rubber over Palladium Nanoparticles Synthesized In Situ: Selection of Stabilizer
https://orcid.org/https://orcid.org/0000-0002-6125-902X
https://orcid.org/https://orcid.org/0000-0001-5490-8610
https://orcid.org/https://orcid.org/0000-0001-9297-4950
Nanoparticles were synthesized from water-soluble and oil-soluble palladium precursors, specifically palladium acetate and palladium 2-ethylhexanoate, in cyclohexane/benzene solutions of butadiene–styrene rubber (BSR). Palladium nanoparticles prepared in situ were demonstrated to be active in the hydrogenation of the aromatic and olefin moieties of BSR. The degrees of hydrogenation of aromatic moieties at 140°C and 5 MPa hydrogen pressure in the presence of the catalysts synthesized from palladium acetate and palladium 2-ethylhexanoate were 29 and 77%, respectively. In the case of the water-soluble precursor, various surfactants were added to the reaction mixture as stabilizers of palladium particles in an attempt to enhance the degree of hydrogenation. Among them, the highest degree of hydrogenation was achieved in the presence of acetonitrile, compared to the reaction mixtures that contained sucrose, polyethylene glycol, or glycerol additives. The effect of the solvent composition (specifically, of the benzene to cyclohexane ratio) on the degree of BSR hydrogenation was identified. The optimum benzene to cyclohexane ratio is 2 : 8. In this case, the degrees of hydrogenation of aromatic and olefin moieties using palladium 2-ethylhexanoate reach 85 and 94%, respectively.
Hydrogenation of Butadiene–Styrene Rubber over Palladium Nanoparticles Synthesized In Situ: Selection of Stabilizer
Pet. Chem.
Petrukhina, N. N. (author) / Dzhabarov, E. G. (author) / Maximov, A. L. (author)
Petroleum Chemistry ; 61 ; 1118-1123
2021-10-01
6 pages
Article (Journal)
Electronic Resource
English
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