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Barry Stein
Department of Biology, Indiana University, Bloomington, IN 47405
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Synthesis of 4-Methoxybiphenyl Using Pd-Containing Catalysts Based on Polymeric Matrix of Functionalized Hypercrosslinked Polystyrene Linda Nikoshvili; Nadezhda Nemygina; Alexey Bykov; Alexander Sidorov; Valentina Matveeva; Irina Tyamina; Mikhail Sulman; Esther Sulman; Barry Stein
Bulletin of Chemical Reaction Engineering & Catalysis 2015: BCREC Volume 10 Issue 3 Year 2015 (December 2015)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.10.3.8805.256-265

Abstract

This paper describes synthesis of Pd-containing catalysts of Suzuki cross-coupling based on amino-functionalized hypercrosslinked polystyrene. The investigation of the influence of a palladium concen-tration, 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). Copyright © 2015 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Influence of the Mesoporous Polymer Matrix Nature on the Formation of Catalytically Active Ruthenium Nanoparticles Mikhail Sulman; Valentin Doluda; Maksim Grigoryev; Oleg Manaenkov; Anastasiya Filatova; Vladimir Molchanov; Alexander Sidorov; Alexey Bykov; Irin Shkileva; Aleksandrina Sulman; Barry Stein; Valentina Matveeva
Bulletin of Chemical Reaction Engineering & Catalysis 2015: BCREC Volume 10 Issue 3 Year 2015 (December 2015)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.10.3.8824.313-323

Abstract

This paper reports on ruthenium nanoparticles formation and stabilization by hypercrosslinked poly-styrene and the catalytic properties of the nanocomposites obtained. Hypercrosslinked polystyrene with functional groups and without them was used. The nanocomposites were characterized using low-temperature nitrogen physisorption, X-ray photoelectron spectroscopy and transmission electron mi-croscopy. It is established that the tertiary amine group of the support influences both formation of ru-thenium nanoparticles, and their catalytic properties in the selective hydrogenation of D-glucose. Copyright © 2015 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors Aleksandrina Sulman Alexander Sidorov Alexander Sidorov Alexey Bykov Alexey Bykov Anastasiya Filatova Esther Sulman Irin Shkileva Irina Tyamina Linda Nikoshvili Maksim Grigoryev Mikhail Sulman Mikhail Sulman Nadezhda Nemygina Oleg Manaenkov Valentin Doluda Valentina Matveeva Valentina Matveeva Vladimir Molchanov