scholarly journals Cover Feature: Picolinamide‐Based Iridium Catalysts for Dehydrogenation of Formic Acid in Water: Effect of Amide N Substituent on Activity and Stability (Chem. Eur. J. 69/2018)

2018 ◽  
Vol 24 (69) ◽  
pp. 18132-18132
Author(s):  
Ryoichi Kanega ◽  
Naoya Onishi ◽  
Lin Wang ◽  
Kazuhisa Murata ◽  
James T. Muckerman ◽  
...  
Keyword(s):  
Formic Acid ◽  
Water Effect ◽  
Iridium Catalysts

scholarly journals Picolinamide‐Based Iridium Catalysts for Dehydrogenation of Formic Acid in Water: Effect of Amide N Substituent on Activity and Stability

2018 ◽  
Vol 24 (69) ◽  
pp. 18389-18392 ◽  
Author(s):  
Ryoichi Kanega ◽  
Naoya Onishi ◽  
Lin Wang ◽  
Kazuhisa Murata ◽  
James T. Muckerman ◽  
...  
Keyword(s):  
Formic Acid ◽  
Water Effect ◽  
Iridium Catalysts

On-demand hydrogen production from formic acid by light-active dinuclear iridium catalysts

2020 ◽  
Vol 56 (33) ◽  
pp. 4519-4522
Author(s):  
Yuki Sofue ◽  
Kotohiro Nomura ◽  
Akiko Inagaki
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Ambient Temperature ◽  
Catalyst Activity ◽  
Iridium Complexes ◽  
Iridium Catalysts ◽  
On Demand

Light-active dinuclear iridium complexes catalyze the decomposition of formic acid to generate H2 under ambient temperature and base-free conditions. The catalyst activity is sensitive to light demonstrating the ON/OFF switching ability.

scholarly journals Iridium Catalysts with Diazole-containing Ligands for Hydrogen Generation by Formic Acid Dehydrogenation

2017 ◽  
Vol 60 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Yuichi Manaka ◽  
Naoya Onishi ◽  
Masayuki Iguchi ◽  
Hajime Kawanami ◽  
Yuichiro Himeda
Keyword(s):  
Formic Acid ◽  
Hydrogen Generation ◽  
Iridium Catalysts ◽  
Formic Acid Dehydrogenation

scholarly journals Impact of Green Cosolvents on the Catalytic Dehydrogenation of Formic Acid: The Case of Iridium Catalysts Bearing NHC-phosphane Ligands

2021 ◽  
Author(s):  
Ana Luque-Gómez ◽  
Susana García-Abellán ◽  
Julen Munarriz ◽  
Victor Polo ◽  
Vincenzo Passarelli ◽  
...  
Keyword(s):  
Formic Acid ◽  
Catalytic Dehydrogenation ◽  
Iridium Catalysts

Recyclable Silica-Supported Iridium Catalysts for Selective Reductive Transformation of Quinolines with Formic Acid in Water

ChemCatChem ◽  
2017 ◽  
Vol 9 (13) ◽  
pp. 2496-2505 ◽  
Author(s):  
Jing-Fan Zhang ◽  
Rui Zhong ◽  
Quan Zhou ◽  
Xi Hong ◽  
Shuang Huang ◽  
...  
Keyword(s):  
Formic Acid ◽  
Iridium Catalysts ◽  
Reductive Transformation

scholarly journals Synthesis of carbon-supported bimetallic palladium–iridium catalysts by microemulsion: characterization and electrocatalytic properties

2020 ◽  
Vol 56 (1) ◽  
pp. 392-414
Author(s):  
Tomasz Szumełda ◽  
Alicja Drelinkiewicz ◽  
Robert Kosydar ◽  
Jacek Gurgul ◽  
Dorota Duraczyńska
Keyword(s):  
Formic Acid ◽  
Surface Composition ◽  
Formic Acid Oxidation ◽  
Closed Surface ◽  
Atomic Ratio ◽  
Acid Oxidation ◽  
High Concentration ◽  
Iridium Catalysts ◽  
Average Size ◽  
Formic Acid Oxidation Reaction

Abstract Carbon (Vulcan XC-72)-supported bimetallic Pd–Ir catalysts with different Pd/Ir proportions (5–50 mol% Ir, 2 wt% Pd) were prepared by “water-in-oil” microemulsion method (w/o) using solutions of low (0.02 M, L series) and high concentration (0.2 M, H series) of the metals precursors (PdCl2 and IrCl3). The bimetallic particles were examined in terms of nanoscale phase properties (extent of Pd–Ir alloying, phase separation), surface composition (Pd and Ir fractions) and electrocatalytic performance for the formic acid oxidation reaction. Structural characterization was performed using XRD, SEM and HRTEM techniques. Electrochemical characterization allowed estimating the PdH formation ability and the surface composition of Pd–Ir particles what was confirmed by XPS data. The Pd–Ir nanoparticles of similar average size (ca. 4 nm), close to that of Ir (3.8 nm) and below that of Pd (6.2 nm) were formed regardless of the Pd/Ir proportion and the concentration of the metals precursors in the w/o. In contrast to the largely alloyed PdIr nanoparticles with the Pd-rich surface formed at low concentration of the metals precursors (0.02 M), the particles of almost closed surface and bulk Pd/Ir ratios composed mostly of randomly distributed single-phase domains were formed at high concentration (0.2 M). At the lowest bulk Ir content, 5 mol%, the particles have Ir-rich surface regardless of the preparation method. The catalytic studies involving formic acid electrooxidation reaction showed the activity enhancement for the L series catalysts with respect to monometallic Pd/C (twofold TOF increase) and H series counterparts. The Pd85Ir15/C catalyst of the Pd–Ir alloyed and the surface composition expressed by the Pd/Ir atomic ratio near to 6 displayed the highest activity which was 2.9-times higher relative to that of Pd. Graphic abstract

Iridium catalysts featuring amine-containing ligands for the dehydrogenation of formic acid

2020 ◽  
Vol 916 ◽  
pp. 121259
Author(s):  
Ana Luque ◽  
Amaia Iturmendi ◽  
Laura Rubio-Pérez ◽  
Julen Munárriz ◽  
Victor Polo ◽  
...  
Keyword(s):  
Formic Acid ◽  
Iridium Catalysts
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