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Perfluorosulfonic Acid Polymer Composites: Effect of the Support and Synthesis Method on the Acid and Catalytic Properties Full article

Journal Molecular Catalysis
ISSN: 2468-8231
Output data Year: 2020, Volume: 492, Article number : 111006, Pages count : 9 DOI: 10.1016/j.mcat.2020.111006
Tags Acid catalysis; Nafion composites; Pechmann condensation; Perfluorosulfonic acid polymer; Solid acid
Authors Koskin Anton P. 1 , Andreev Rodion V. 2 , Primachenko Oleg N. 3 , Shuvarakova Ekaterina I. 1 , Bedilo Alexander F. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2 Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk, Russia
3 Institute of Macromolecular Compounds RAS, St. Petersburg, Russia

Funding (1)

1 Federal Agency for Scientific Organizations 0303-2016-0014

Abstract: Several composite samples containing perfluorosulfonic acid polymer (PFSA; e.g. Nafion) over silica, carbon nanofibers or zirconia were synthesized to determine the effect of the support on the acid catalytic properties. The synthesized composites contained 5–25 wt.% of the perfluorosulfonic acid polymer with variable concentration of sulfonic groups (equivalent weight of PFSA). The acidity of the composites was investigated by titrimetric techniques, in a model catalytic reaction between resorcinol and ethyl acetoacetate, by EPR using spin probes and by temperature programmed desorption of propylene. It is shown that impregnation of silica with high surface area or mesoporous carbon nanomaterials yields samples with characteristics exceeding commercially available SAC (Nafion over silica) samples. A method for synthesis of zirconia-based catalytic composites was developed. It was shown that despite the relatively low catalytic activity (compared to PFSA/SBA-15 and PFSA/CNF samples) these samples have increased resistance to the PFSA desorption. So, polymers with low-equivalent weight characterized by higher acidity can be used. © 2020 Elsevier B.V.
Cite: Koskin A.P. , Andreev R.V. , Primachenko O.N. , Shuvarakova E.I. , Bedilo A.F.
Perfluorosulfonic Acid Polymer Composites: Effect of the Support and Synthesis Method on the Acid and Catalytic Properties
Molecular Catalysis. 2020. V.492. 111006 :1-9. DOI: 10.1016/j.mcat.2020.111006 WOS Scopus РИНЦ AN OpenAlex
Dates:
Submitted: Feb 11, 2020
Accepted: May 2, 2020
Published online: May 20, 2020
Published print: Aug 1, 2020
Identifiers:
Web of science: WOS:000549100200021
Scopus: 2-s2.0-85084809064
Elibrary: 43304484
Chemical Abstracts: 2020:1011158
OpenAlex: W3028214273
Citing:
DB Citing
Scopus 3
Web of science 3
OpenAlex 2
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