Issue 30, 2019, Issue in Progress
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RSC Advances

Fixing CO2 into β-oxopropylcarbamates in neat condition by ionic gelation/Ag(i) supported on dendritic fibrous nanosilica†

Liping Chang,*a   Rahele Zhianib  and  Seyed Mohsen Sadeghzadeh ORCID logo *b  

* Corresponding authors

a School of Continuing Education of Xinxiang University, Xinxiang, Henan, P. R. China
E-mail: xinxiangxueyuan@aliyun.com

b New Materials Technology and Processing Research Center, Department of Chemistry, Islamic Azad University, Neyshabur Branch, Neyshabur, Iran
E-mail: seyedmohsen.sadeghzadeh@gmail.com

Abstract

In this research, a novel approach to produce a novel nanocatalyst, AgBr supported on an ionic gelation (IG)-based nanomaterial, was developed through the aqueous coprecipitation approach for the dendritic fibrous nanosilica (DFNS) production and the wet impregnation method for IG coating, taking into account TPP as the cross-linking agent. In addition, DFNS/IG@Ag(I) had heterogeneous features that contributed to the quick improvement of the catalyst by filtration separation. The catalytic activity of DFNS/IG@Ag(I) was examined to synthesize β-oxopropylcarbamates through a multicomponent coupling of CO2, amines and propargyl alcohols in moderate conditions. The DFNS/IG@Ag(I) NPs were completely investigated by taking advantage of TG, TEM, FESEM and FT-IR spectroscopy analyses. The DFNS/IG@Ag(I) nanocatalyst indicated high stability in the reaction for five cycles without considerable loss of some properties like activity, which could be because of the high loading of IG on the catalyst surface.

Graphical abstract: Fixing CO2 into β-oxopropylcarbamates in neat condition by ionic gelation/Ag(i) supported on dendritic fibrous nanosilica

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Article information

DOI
https://doi.org/10.1039/C9RA02680K
Article type
Paper
Submitted
10 Apr 2019
Accepted
12 May 2019
First published
30 May 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 16955-16965

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Fixing CO2 into β-oxopropylcarbamates in neat condition by ionic gelation/Ag(I) supported on dendritic fibrous nanosilica

L. Chang, R. Zhiani and S. M. Sadeghzadeh, RSC Adv., 2019, 9, 16955 DOI: 10.1039/C9RA02680K

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