Surface Ir+5 Formation as a Universal Prerequisite for O2 Evolution on Ir Oxides

N Diklić, AH Clark, J Herranz, D Aegerter… - ACS …, 2023 - ACS Publications
The large-scale deployment of polymer electrolyte water electrolysis (PEWE) is largely
limited by the use of O2 evolution reaction (OER) catalysts based on scarce and expensive …

Reaction‐Induced Formation of Stable Mononuclear Cu (I) Cl Species on Carbon for Low‐Footprint Vinyl Chloride Production

D Faust Akl, G Giannakakis… - Advanced …, 2023 - Wiley Online Library
Copper catalysts are attractive candidates for Hg‐free vinyl chloride monomer (VCM)
production via acetylene hydrochlorination due to their non‐toxic nature and high stability …

Time‐resolved potential‐induced changes in Fe/N/C‐catalysts studied by in situ modulation excitation X‐ray absorption spectroscopy

K Ebner, AH Clark, VA Saveleva… - Advanced Energy …, 2022 - Wiley Online Library
To advance the widespread implementation of electrochemical energy storage and
conversion technologies, the development of inexpensive electrocatalysts is imperative. In …

Decoupling the Contributions of Different Instability Mechanisms to the PEMFC Performance Decay of Non-noble Metal O2-Reduction Catalysts

S Ünsal, R Girod, C Appel, D Karpov… - Journal of the …, 2023 - ACS Publications
Non-noble metal catalysts (NNMCs) hold the potential to replace the expensive Pt-based
materials currently used to speed up the oxygen reduction reaction (ORR) in proton …

Potential Pitfalls in the Operando XAS Study of Oxygen Evolution Electrocatalysts

N Diklic, AH Clark, J Herranz, JS Diercks… - ACS Energy …, 2022 - ACS Publications
One of the main challenges in the scale-up of polymer electrolyte membrane water
electrolysis (PEMWE) is the required decrease in the loading of the costly and scarce Ir …

Iron-catalysed cooperative redox mechanism for the simultaneous conversion of nitrous oxide and nitric oxide

F Buttignol, JWA Fischer, AH Clark, M Elsener… - Nature Catalysis, 2024 - nature.com
Iron-exchanged zeolites are often deployed industrially to remediate nitric oxide (NO) and
nitrous oxide (N2O) emissions. The nature of the active site and the reaction mechanism …

Porous polyisothiocyanurates for selective palladium recovery and heterogeneous catalysis

KS Song, T Ashirov, SN Talapaneni, AH Clark… - Chem, 2022 - cell.com
Palladium is an indispensable metal due to its wide range of industrial applications. Pd
refining, however, is an extremely energy-intensive process with a serious environmental …

In situ study of low-temperature dry reforming of methane over La2Ce2O7 and LaNiO3 mixed oxides

AP Ramon, X Li, AH Clark, OV Safonova… - Applied Catalysis B …, 2022 - Elsevier
Dry reforming of methane (DRM) is a promising process to generate synthetic gas with a low
H 2/CO ratio. The main issues in DRM are the deposition of carbon over the catalyst and …

Time-Resolved XAS Provides Direct Evidence for Oxygen Activation on Cationic Iron in a Bimetallic Pt-FeOx/Al2O3 Catalyst

II Sadykov, M Zabilskiy, AH Clark, F Krumeich… - ACS …, 2021 - ACS Publications
Reducible oxides are effective aerobic oxidation catalysts being able to activate molecular
oxygen. This ability is generally attributed to the high concentration of oxygen vacancies …

Redox Dynamics of Active VOx Sites Promoted by TiOx during Oxidative Dehydrogenation of Ethanol Detected by Operando Quick XAS

A Zabilska, AH Clark, BM Moskowitz, IE Wachs… - Jacs Au, 2022 - ACS Publications
Titania-supported vanadia (VO x/TiO2) catalysts exhibit outstanding catalytic in a number of
selective oxidation and reduction processes. In spite of numerous investigations, the nature …