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  • 1 Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran
  • | 2 Department of Chemistry, Semnan University, Semnan, Iran
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Abstract

Cu(II) tetradentate Schiff base complexes of N,N′-(bis(pyridin-2-yl)formylidene)ethane-1,2-diamine (pfed), N,N′-(bis(pyridin-2-yl)formylidene)propane-1,3-diamine (pfpd), N,N′-(bis(pyridin-2-yl)formylidene)benzene-1,2-diamine (pfbd), N,N′-(bis(pyridin-2-yl)formylidene)cycohexane-1,2-diamine (pfcd) and N,N′-(bis(pyridin-2yl)formylidene)meso-stilben-1,2-diamine (pfmd) were synthesized, characterized and immobilized on sodium montmorillonite. These catalysts were characterized by X-ray diffraction, IR spectroscopy, diffuse reflectance spectra (DRS) and atomic absorption spectroscopy. The IR and DRS data of the heterogeneous catalysts show that copper(II) complexes were physically entrapped within sodium montmorillonite. The basal spacing (d001) of heterogeneous catalysts indicates that Cu(II) Schiff base complexes were fixed in the axial direction into the interlayer of montmorillonite. All new heterogeneous catalysts show excellent catalytic activity in the epoxidation of cyclooctene using tert-butylhydroperoxide in acetonitrile. The supported [Cu(pfed)] exhibited a moderate 74 % selectivity for epoxidation with 76 % conversion. The catalytic activity and selectivity of heterogeneous catalysts have not changed after three times of reusing.

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  • Impact Factor (2019): 1.520
  • Scimago Journal Rank (2019): 0.345
  • SJR Hirsch-Index (2019): 39
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • SJR Quartile Score (2019): Q4 Catalysis
  • Impact Factor (2018): 1.142
  • Scimago Journal Rank (2018): 0.374
  • SJR Hirsch-Index (2018): 37
  • SJR Quartile Score (2018): Q3 Physical and Theoretical Chemistry
  • SJR Quartile Score (2018): Q3 Catalysis

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
3
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)