Simon Penner
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View article: How Ti Doping Improves the Catalytic Methane Dry Reforming of Nanoporous Reduced LaNiO <sub>3</sub> Perovskites
How Ti Doping Improves the Catalytic Methane Dry Reforming of Nanoporous Reduced LaNiO <sub>3</sub> Perovskites Open
We studied the effect of Ti substitution on nickel B-sites in LaNiO3 to unravel the influence of Ti doping on structural stability, Ni exsolution, and methane dry reforming (DRM) properties. Ni can be substituted by Ti down to compositions…
View article: <i>In Situ</i> Cw ESR Study on Redox Behavior and Phase Heterogeneity in A-Site-Deficient Lanthanum Iron Manganite Perovskite Catalysts
<i>In Situ</i> Cw ESR Study on Redox Behavior and Phase Heterogeneity in A-Site-Deficient Lanthanum Iron Manganite Perovskite Catalysts Open
Temperature-dependent in situ continuous wave (cw) electron spin resonance (ESR) measurements are used for investigating changes in magnetization upon reduction and reoxidation in La-deficient La x Fe0.7Mn0.3O3 (x < 1) samples to advance t…
View article: Regeneration of Ni–Zr Methane Dry Reforming Catalysts in CO<sub>2</sub>: Reduction of Coking and Ni Redispersion
Regeneration of Ni–Zr Methane Dry Reforming Catalysts in CO<sub>2</sub>: Reduction of Coking and Ni Redispersion Open
Bimetallic Ni-Zr layers on top of a Zr metal substrate are oxidatively transformed into an active Ni metal-ZrO2 interfacial state under methane dry reforming (DRM) conditions, which exhibits progressive coking with increasing DRM cycle num…
View article: The role of Co–Ga<sub>2</sub>O<sub>3</sub> interfaces in methane dry reforming
The role of Co–Ga<sub>2</sub>O<sub>3</sub> interfaces in methane dry reforming Open
As the combination of Co with other non-noble metals is a viable way to improve the catalytic properties of Co in methane dry reforming (DRM), we studied Co 3 O 4 /β-Ga 2 O 3 to understand the influence of Ga and the Co–Ga 2 O 3 interface …
View article: Combined Experimental and Theoretical Approach to the Electronic and Magnetic Properties of Cu-Doped LaMnO<sub>3</sub> Perovskites
Combined Experimental and Theoretical Approach to the Electronic and Magnetic Properties of Cu-Doped LaMnO<sub>3</sub> Perovskites Open
Cu-doped LaCu x Mn1-x O3 perovskites have been used as a model system for a joint experimental and theoretical assessment of the influence of the Cu doping level on the structural, electronic, and magnetic properties. The different Cu-dope…
View article: New Insights into the Hydrogen Evolution Mechanism near the Ni/YSZ Triple Phase Boundary during Steam Electrolysis: A Patterned Model Electrode Study
New Insights into the Hydrogen Evolution Mechanism near the Ni/YSZ Triple Phase Boundary during Steam Electrolysis: A Patterned Model Electrode Study Open
Solid oxide cell technologies play a crucial role in climate change mitigation by enabling the reversible storage of renewable energy. Understanding the electrochemical high-temperature reaction mechanisms and the catalytic role of the ele…
View article: Comprehensive characterisation of multi-channel mixed-matrix membranes and impact of water matrix variability on micropollutant removal
Comprehensive characterisation of multi-channel mixed-matrix membranes and impact of water matrix variability on micropollutant removal Open
Inadequate removal of micropollutants in wastewater treatment plants (WWTPs) contributes to environmental contamination, underscoring the need for effective technologies. Mixed-matrix membranes with embedded powdered activated carbon (PAC)…
View article: Metal–Perovskite Interfacial Engineering to Boost Activity in Heterogeneous Catalysis
Metal–Perovskite Interfacial Engineering to Boost Activity in Heterogeneous Catalysis Open
In this review, we have assessed the possibility of metal–perovskite interfacial engineering to enhance the catalytic activity and selectivity in a range of heterogeneous catalytic reactions. We embarked on a literature screening of differ…
View article: A quantitative microscopic view on the gas‐phase‐dependent phase transformation from tetragonal to monoclinic ZrO <sub>2</sub>
A quantitative microscopic view on the gas‐phase‐dependent phase transformation from tetragonal to monoclinic ZrO <sub>2</sub> Open
ZrO 2 is a versatile material with diverse applications, including structural ceramics, sensors, and catalysts. The properties of ZrO 2 are largely determined by its crystal structure, which is temperature‐ and atmosphere dependent. Thus, …
View article: How defects in lanthanum iron manganite perovskite structures promote the catalytic reduction of NO by CO
How defects in lanthanum iron manganite perovskite structures promote the catalytic reduction of NO by CO Open
Adjusting the defect level during synthesis of A- and B-site deficient lanthanum iron manganite (LFM) perovskites shows that non-stoichiometry can beneficially influence the catalytic reactivity to N2 in the reduction of NO by CO on noble …
View article: Preparation of Ni and NiCu/Yttria‐Stabilized Zirconia Model Electrodes with Optimized Triple‐Phase Boundary Geometry for Fundamental Operando Spectroscopic Studies
Preparation of Ni and NiCu/Yttria‐Stabilized Zirconia Model Electrodes with Optimized Triple‐Phase Boundary Geometry for Fundamental Operando Spectroscopic Studies Open
Solid oxide cell technologies play a pivotal role in the realm of renewable energy storage, guiding us through the journey toward decarbonization. Understanding how electrocatalytic materials behave under high‐temperature conditions is an …
View article: Titanium Oxycarbide as Platinum-Free Electrocatalyst for Ethanol Oxidation
Titanium Oxycarbide as Platinum-Free Electrocatalyst for Ethanol Oxidation Open
The compound material titanium oxycarbide (TiOC) is found to be an effective electrocatalyst for the electrochemical oxidation of ethanol to CO2. The complete course of this reaction is one of the main challenges in direct ethanol fuel cel…
View article: Electrocatalytic Enhancement of CO Methanation at the Metal–Electrolyte Interface Studied Using In Situ X-ray Photoelectron Spectroscopy
Electrocatalytic Enhancement of CO Methanation at the Metal–Electrolyte Interface Studied Using In Situ X-ray Photoelectron Spectroscopy Open
For the direct reduction of CO2 and H2O in solid oxide electrolysis cells (SOECs) with cermet electrodes toward methane, a fundamental understanding of the role of elemental carbon as a key intermediate within the reaction pathway is of em…
View article: Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy
Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy Open
For the direct reduction of CO2 and H2O in solid oxide electrolysis cells (SOECs) with cermet electrodes toward methane, a fundamental understanding of the role of elemental carbon as a key intermediate within the reaction pathway is of em…
View article: Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy
Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy Open
For the direct reduction of CO2 and H2O in solid oxide electrolysis cells (SOECs) with cermet electrodes toward methane, a fundamental understanding of the role of elemental carbon as a key intermediate within the reaction pathway is of em…
View article: Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy
Electrocatalytic enhancement of CO methanation at the metal-electrolyte interface studied by in situ X-ray photoelectron spectroscopy Open
For the direct reduction of CO2 and H2O in solid oxide electrolysis cells (SOECs) with cermet electrodes toward methane, a fundamental understanding of the role of elemental carbon as a key intermediate within the reaction pathway is of em…
View article: A laboratory-based multifunctional near ambient pressure X-ray photoelectron spectroscopy system for electrochemical, catalytic, and cryogenic studies
A laboratory-based multifunctional near ambient pressure X-ray photoelectron spectroscopy system for electrochemical, catalytic, and cryogenic studies Open
A versatile multifunctional laboratory-based near ambient pressure x-ray photoelectron spectroscopy (XPS) instrument is presented. The entire device is highly customized regarding geometry, exchangeable manipulators and sample stages for l…
View article: Pivotal Role of Ni/ZrO2 Phase Boundaries for Coke-Resistant Methane Dry Reforming Catalysts
Pivotal Role of Ni/ZrO2 Phase Boundaries for Coke-Resistant Methane Dry Reforming Catalysts Open
To identify the synergistic action of differently prepared Ni-ZrO2 phase boundaries in methane dry reforming, we compared an “inverse” near-surface intermetallic NiZr catalyst precursor with the respective bulk-intermetallic NixZry materia…
View article: Zirconium Carbide Mediates Coke‐Resistant Methane Dry Reforming on Nickel‐Zirconium Catalysts
Zirconium Carbide Mediates Coke‐Resistant Methane Dry Reforming on Nickel‐Zirconium Catalysts Open
Graphitic deposits anti‐segregate into Ni 0 nanoparticles to provide restored CH 4 adsorption sites and near‐surface/dissolved C atoms, which migrate to the Ni 0 /ZrO 2 interface and induce local Zr x C y formation. The resulting oxygen‐de…
View article: The pervasive presence of oxygen in ZrC
The pervasive presence of oxygen in ZrC Open
Based on the recent interest in oxy-carbide materials in catalysis, we employ a thin film model concept to highlight that variation of key reaction parameters in the reactive magnetron sputtering of zirconium carbide films (sputtering powe…
View article: Porous Silicon Oxycarbonitride Ceramics with Palladium and Pd2Si Nanoparticles for Dry Reforming of Methane
Porous Silicon Oxycarbonitride Ceramics with Palladium and Pd2Si Nanoparticles for Dry Reforming of Methane Open
Pd-containing precursor has been synthesized from palladium acetate and poly(vinly)silazane (Durazane 1800) in an ice bath under an argon atmosphere. The results of ATR-FTIR and NMR characterizations reveal the chemical reaction between pa…
View article: Who Does the Job? How Copper Can Replace Noble Metals in Sustainable Catalysis by the Formation of Copper–Mixed Oxide Interfaces
Who Does the Job? How Copper Can Replace Noble Metals in Sustainable Catalysis by the Formation of Copper–Mixed Oxide Interfaces Open
Following the need for an innovative catalyst and material design in catalysis, we provide a comparative approach using pure and Pd-doped LaCu x Mn1-x O3 (x = 0.3 and 0.5) perovskite catalysts to elucidate the beneficial role of the Cu/per…
View article: Properties of Bulk In‐Pt Intermetallic Compounds in Methanol Steam Reforming
Properties of Bulk In‐Pt Intermetallic Compounds in Methanol Steam Reforming Open
Heterogeneous catalysts are often complex materials containing different compounds. While this can lead to highly beneficial interfaces, it is difficult to identify the role of single components. In methanol steam reforming (MSR), the inte…
View article: Dry Reforming of Methane on NiCu and NiPd Model Systems: Optimization of Carbon Chemistry
Dry Reforming of Methane on NiCu and NiPd Model Systems: Optimization of Carbon Chemistry Open
A series of ultra-clean, unsupported Cu-doped and Pd-doped Ni model catalysts was investigated to develop the fundamental concept of metal doping impact on the carbon tolerance and catalytic activity in the dry reforming of methane (DRM). …