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Erschienen in: Cellulose 8/2019

24.04.2019 | Original Research

Cellulose nanocrystal supported palladium as a novel recyclable catalyst for Ullmann coupling reactions

verfasst von: Sajedeh Seyednejhad, Mohammad A. Khalilzadeh, Daryoush Zareyee, Hasan Sadeghifar, Richard Venditti

Erschienen in: Cellulose | Ausgabe 8/2019

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Abstract

A new Pd catalyst chemically bonded to cellulose nanocrystals surfaces (CNC-BIA-Pd) was developed. 2-(1H-Benzo[d]imidazol-2-yl) aniline (BIA), tosylated cellulose nanocrystals (CNC-TOS) and PdCl2 were the reactants for the synthesis of the new catalyst designed to be used for the Ullmann reaction. The modified cellulose nano catalyst was characterized with various analytical tools. The catalyst had excellent selectivity and activity in a short reaction time (45 min) and outstanding TON (490) and TOF (1960) values. The nano catalyst was determined to be reusable for at least eight cycles. The CNC-BIA-Pd catalyst indicated excellent catalytic efficiency for the Ullmann C–O reaction when it was compared to commercial palladium catalysts.

Graphical abstract

A new Pd catalyst chemically bonded to cellulose nanocrystal surfaces (CNC-BIA-Pd) was developed and used for the Ullmann reactions. The catalyst had excellent selectivity and activity in a short reaction time and outstanding TON (490) and TOF (1960) values. The nano catalyst was determined to be reusable for at least eight cycles.

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Metadaten
Titel
Cellulose nanocrystal supported palladium as a novel recyclable catalyst for Ullmann coupling reactions
verfasst von
Sajedeh Seyednejhad
Mohammad A. Khalilzadeh
Daryoush Zareyee
Hasan Sadeghifar
Richard Venditti
Publikationsdatum
24.04.2019
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 8/2019
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02436-7

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