Publications de Aswin Gopakumar

A polymeric ionic liquid catalyst for the N-formylation and N-methylation of amines using CO2/PhSiH3

Paul Joseph Dyson, Andreas Züttel, Zhaofu Fei, Serhii Shyshkanov, Kyriakos Stylianou, Arunraj Chidambaram, Aswin Gopakumar, Dmitry Vasilyev

We describe a polymeric ionic liquid (PIL) derived from trimethyl(p-vinylbenzyl)ammonium chloride ([VBTAm]Cl) that efficiently catalyzes the N-formylation of amines employing CO2 and PhSiH3 at room temperature with low catalyst loadings in near-quantitativ ...

2020

Methanol production from CO(2)via an integrated, formamide-assisted approach

Paul Joseph Dyson, Andreas Züttel, Loris Giovanni Lombardo, Jorge Gustavo Uranga, Aswin Gopakumar, Gabriela Gastelu, Tim Pfister, Gunay Imanzade

The synthesis of fuels from CO2 has made tremendous progress in recent years, although practical applications remain limited. Herein, we describe a cyclic process that produces MeOH from CO(2)via formamide intermediates, which are initially reduced using N ...

ROYAL SOC CHEMISTRY2020

Chemoselective reduction of heteroarenes with a reduced graphene oxide supported rhodium nanoparticle catalyst

Paul Joseph Dyson, Zhaofu Fei, Aswin Gopakumar, Alena Karakulina

2018

Iron-Rich Natural Mineral Gibeon Meteorite Catalyzed N -formylation of Amines using CO2 as the C1 Source

Paul Joseph Dyson, Arnaud Magrez, Kevin Sivula, Florian Le Formal, Aswin Gopakumar, Ismail Akçok

2018

Development of heterogeneous catalytic systems for the transformation of carbon dioxide to methanol under mild conditions

Aswin Gopakumar

Rising level of carbon dioxide (CO2) is a significant contributor to global warming and poses a major concern in modern society and environment. Anthropogenic activities such as fossil fuel combustion, cement production and deforestation are the primary ca ...

EPFL2018

Synthesis of Cross-linked Ionic Poly(styrenes) and their Application as Catalysts for the Synthesis of Carbonates from CO2 and Epoxides

Paul Joseph Dyson, Zhaofu Fei, Felix Daniel Bobbink, Antoine Philippe Van Muyden, Aswin Gopakumar

A series of dicationic styrene-functionalized imidazolium-based salts, in which the two imidazolium rings are bridged by a functionalized spacer, are prepared. The salts are polymerized to afford cross-linked imidazolium-based ionic polystyrene materials, ...

Wiley-VCH Verlag2017

A Gibeon meteorite yields a high-performance water oxidation electrocatalyst

Paul Joseph Dyson, Arnaud Magrez, Kevin Sivula, Florian Le Formal, Aswin Gopakumar, Nestor Guijarro Carratala, Mathieu Steven Prévot, Wiktor Stefan Bourée, Charlotte Marie Sornay, Julie Voit

Examining the electrocatalytic performance of naturally-occurring metallic minerals is of interest for energy conversion applications given their unique atomic composition and formation history. Herein, we report the electrocatalytic function of an iron-ba ...

2016

A Rhodium Nanoparticle-Lewis Acidic Ionic Liquid Catalyst for the Chemoselective Reduction of Heteroarenes

Paul Joseph Dyson, Aswin Gopakumar, Shoubhik Das, Alena Karakulina, Ismail Akçok, Bastien Lucas Roulier

We describe a catalytic system composed of rhodium nanoparticles immobilized in a Lewis acidic ionic liquid. The combined system catalyzes the hydrogenation of quinolines, pyridines, benzofurans, and furan to access the corresponding heterocycles, importan ...

Wiley-VCH Verlag GmbH2016

Soft Approaches to CO2 Activation

Paul Joseph Dyson, Felix Daniel Bobbink, Aswin Gopakumar, Shoubhik Das

The utilization of CO2 as a C1 synthon is becoming increasingly important as a feedstock derived from carbon capture and storage technologies. Herein, we describe some of our recent research on carbon dioxide valorization, notably, using organocatalysts to ...

Swiss Chemical Soc2015