New copper-containing catalysts based on modified amorphous silica and their use in flow azide—alkyne cycloaddition
- Авторлар: Burilov V.1, Nurmukhametova A.1, Belov R.1, Mironova D.1, Vorob´ev V.2, Osin Y.2, Antipin I.1
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Мекемелер:
- A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
- Interdisciplinary Center for Analytical Microscopy, Kazan (Volga Region) FederalUniversity
- Шығарылым: Том 67, № 3 (2018)
- Беттер: 461-468
- Бөлім: Full Articles
- URL: https://journals.rcsi.science/1066-5285/article/view/242295
- DOI: https://doi.org/10.1007/s11172-018-2093-8
- ID: 242295
Дәйексөз келтіру
Аннотация
Сopper-containing catalysts supported on amorphous silica modified by amines were prepared using the chemical reduction method. The morphology of copper particles and their chemi calstate depend on the type of the reducing agent used. The use of ascorbic acid results in the formation of monodisperse submicron Cu0 particles 200—300 nm in size, whereas Cu0 particles with a size ranging from 50 to 150 nm are formed when hydrazine hydrate was used. The morphology and chemical state of the copper particles reduced with sodium borohydride depend substantially on the amount of the reducing agent: Cu0 nanoparticles 10—15 nm in size are formed if the reducing agent is an excess, layered Cu2O plates are formed at the equimolar amount of sodium borohydride, and a decrease in the amount of sodium borohydride results in spherical Cu2O particles. All the catalysts synthesized in the flow regime showed higher activity in the catalytic cycloaddition of azides to alkynes than the commercially available copper catalysts.
Авторлар туралы
V. Burilov
A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
Хат алмасуға жауапты Автор.
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
A. Nurmukhametova
A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
R. Belov
A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
D. Mironova
A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
V. Vorob´ev
Interdisciplinary Center for Analytical Microscopy, Kazan (Volga Region) FederalUniversity
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
Yu. Osin
Interdisciplinary Center for Analytical Microscopy, Kazan (Volga Region) FederalUniversity
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008
I. Antipin
A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University
Email: ultrav@bk.ru
Ресей, 18 ul. Kremlevskaya, Kazan, 420008