Next Article in Journal
Performance of Ethane Dehydrogenation over PtSn Loaded onto a Calcined Mg(Al)O LDH with Three Mg:Al Molar Ratios Using a Novel Method
Next Article in Special Issue
Towards Higher Rate Electrochemical CO2 Conversion: From Liquid-Phase to Gas-Phase Systems
Previous Article in Journal
Influence of Transition Metal on the Hydrogen Evolution Reaction over Nano-Molybdenum-Carbide Catalyst
Previous Article in Special Issue
Theoretical Study of the Mechanism for CO2 Hydrogenation to Methanol Catalyzed by trans-RuH2(CO)(dpa)
Open AccessFeature PaperArticle

Molecular Rh(III) and Ir(III) Catalysts Immobilized on Bipyridine-Based Covalent Triazine Frameworks for the Hydrogenation of CO2 to Formate

1
Department of Applied Chemistry, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136702, Korea
2
Clean Energy Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 136-791, Korea
3
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
*
Author to whom correspondence should be addressed.
Catalysts 2018, 8(7), 295; https://doi.org/10.3390/catal8070295
Received: 22 June 2018 / Revised: 20 July 2018 / Accepted: 20 July 2018 / Published: 22 July 2018
(This article belongs to the Special Issue Catalysis and Catalytic Processes for CO2 Conversion)
  |  
PDF [3996 KB, uploaded 22 July 2018]
  |  

Abstract

The catalytic reactivity of molecular Rh(III)/Ir(III) catalysts immobilized on two- and three-dimensional Bipyridine-based Covalent Triazine Frameworks (bpy-CTF) for the hydrogenation of CO2 to formate has been described. The heterogenized Ir complex demonstrated superior catalytic efficiency over its Rh counterpart. The Ir catalyst immobilized on two-dimensional bpy-CTF showed an improved turnover frequency and turnover number compared to its three-dimensional counterpart. The two-dimensional Ir catalyst produced a maximum formate concentration of 1.8 M and maintained its catalytic efficiency over five consecutive runs with an average of 92% in each cycle. The reduced activity after recycling was studied by density functional theory calculations, and a plausible leaching pathway along with a rational catalyst design guidance have been proposed. View Full-Text
Keywords: heterogenization on covalent triazine frameworks; immobilized bipyridine complexes; heterogenized Ir and Rh complexes; heterogeneous CO2 hydrogenation catalyst; leaching pathway of heterogenized half-sandwich complexes heterogenization on covalent triazine frameworks; immobilized bipyridine complexes; heterogenized Ir and Rh complexes; heterogeneous CO2 hydrogenation catalyst; leaching pathway of heterogenized half-sandwich complexes
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Gunasekar, G.H.; Park, K.; Jeong, H.; Jung, K.-D.; Park, K.; Yoon, S. Molecular Rh(III) and Ir(III) Catalysts Immobilized on Bipyridine-Based Covalent Triazine Frameworks for the Hydrogenation of CO2 to Formate. Catalysts 2018, 8, 295.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top