Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline

The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving an...

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Autores principales:	Piotr Cyganowski, Anna Dzimitrowicz, Piotr Jamroz, Dorota Jermakowicz-Bartkowiak, Pawel Pohl
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polymeric nanocomposites anion exchange resins suspension copolymers amines 4-nitrophenol 4-nitroaniline Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/4cbb957c9c994ed08ac3e647633e4cc9
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spelling	oai:doaj.org-article:4cbb957c9c994ed08ac3e647633e4cc92021-11-11T18:47:39ZRhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline10.3390/polym132137962073-4360https://doaj.org/article/4cbb957c9c994ed08ac3e647633e4cc92021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3796https://doaj.org/toc/2073-4360The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving anion exchange of ReO<sub>4</sub><sup>–</sup> ions followed by their reduction with NaBH<sub>4</sub>. The amino functionality present in the resin played a primary role in the stabilization of the resultant ReNSs, consisting of ≈1% (<i>w/w</i>) Re in the polymer mass. The synthesized and capped ReNSs were amorphous and had the average size of 3.45 ± 1.85 nm. Then, the obtained catalyst was used in a catalytic reduction of 4-nitrophenol (4-NP) and 4-nitroaniline (4-NA). Following the pseudo-first-order kinetics, 5 mg of the catalyst led to a 90% conversion of 4-NP with the mass-normalized rate constant (k<sub>m1</sub>) of 6.94 × 10<sup>−3</sup> min<sup>−1</sup> mg<sup>−1</sup>, while the corresponding value acquired for 4-NA was 7.2 × 10<sup>−3</sup> min<sup>−1</sup> mg<sup>−1</sup>, despite the trace amount of Re in the heterogenous catalyst. The obtained material was also conveniently reused.Piotr CyganowskiAnna DzimitrowiczPiotr JamrozDorota Jermakowicz-BartkowiakPawel PohlMDPI AGarticlepolymeric nanocompositesanion exchange resinssuspension copolymersamines4-nitrophenol4-nitroanilineOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3796, p 3796 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polymeric nanocomposites anion exchange resins suspension copolymers amines 4-nitrophenol 4-nitroaniline Organic chemistry QD241-441
spellingShingle	polymeric nanocomposites anion exchange resins suspension copolymers amines 4-nitrophenol 4-nitroaniline Organic chemistry QD241-441 Piotr Cyganowski Anna Dzimitrowicz Piotr Jamroz Dorota Jermakowicz-Bartkowiak Pawel Pohl Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
description	The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving anion exchange of ReO<sub>4</sub><sup>–</sup> ions followed by their reduction with NaBH<sub>4</sub>. The amino functionality present in the resin played a primary role in the stabilization of the resultant ReNSs, consisting of ≈1% (<i>w/w</i>) Re in the polymer mass. The synthesized and capped ReNSs were amorphous and had the average size of 3.45 ± 1.85 nm. Then, the obtained catalyst was used in a catalytic reduction of 4-nitrophenol (4-NP) and 4-nitroaniline (4-NA). Following the pseudo-first-order kinetics, 5 mg of the catalyst led to a 90% conversion of 4-NP with the mass-normalized rate constant (k<sub>m1</sub>) of 6.94 × 10<sup>−3</sup> min<sup>−1</sup> mg<sup>−1</sup>, while the corresponding value acquired for 4-NA was 7.2 × 10<sup>−3</sup> min<sup>−1</sup> mg<sup>−1</sup>, despite the trace amount of Re in the heterogenous catalyst. The obtained material was also conveniently reused.
format	article
author	Piotr Cyganowski Anna Dzimitrowicz Piotr Jamroz Dorota Jermakowicz-Bartkowiak Pawel Pohl
author_facet	Piotr Cyganowski Anna Dzimitrowicz Piotr Jamroz Dorota Jermakowicz-Bartkowiak Pawel Pohl
author_sort	Piotr Cyganowski
title	Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
title_short	Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
title_full	Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
title_fullStr	Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
title_full_unstemmed	Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
title_sort	rhenium nanostructures loaded into amino-functionalized resin as a nanocomposite catalyst for hydrogenation of 4-nitrophenol and 4-nitroaniline
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4cbb957c9c994ed08ac3e647633e4cc9
work_keys_str_mv	AT piotrcyganowski rheniumnanostructuresloadedintoaminofunctionalizedresinasananocompositecatalystforhydrogenationof4nitrophenoland4nitroaniline AT annadzimitrowicz rheniumnanostructuresloadedintoaminofunctionalizedresinasananocompositecatalystforhydrogenationof4nitrophenoland4nitroaniline AT piotrjamroz rheniumnanostructuresloadedintoaminofunctionalizedresinasananocompositecatalystforhydrogenationof4nitrophenoland4nitroaniline AT dorotajermakowiczbartkowiak rheniumnanostructuresloadedintoaminofunctionalizedresinasananocompositecatalystforhydrogenationof4nitrophenoland4nitroaniline AT pawelpohl rheniumnanostructuresloadedintoaminofunctionalizedresinasananocompositecatalystforhydrogenationof4nitrophenoland4nitroaniline
_version_	1718431700425375744

Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline

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