William S. Epling
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Methane partial oxidation under periodic reaction conditions on Pt/Al<sub>2</sub>O<sub>3</sub> Open
Exploring the impact of periodic reaction conditions on hydrogen production in methane partial oxidation on Pt/Al 2 O 3 catalyst.
PdCu Alloy Catalyst for Inhibition‐free, Low‐temperature CO Oxidation Open
Designing robust catalysts for low‐temperature oxidation is pertinent to the development of advanced combustion engines to meet increasingly stringent emissions limitations. Oxidation of CO, hydrocarbon, and NO pollutants over platinum‐gro…
Rhodium Catalyst Structural Changes during, and Their Impacts on the Kinetics of, CO Oxidation Open
Catalysts can undergo structural changes during the reaction, affecting the number and/or the shape of active sites. For example, Rh can undergo interconversion between nanoparticles and single atoms when CO is present in the reaction mixt…
View article: Design and Optimization of Structured Multi-Functional Trapping Catalysts for Conversion of Hydrocarbons and NOx from Diesel and Advanced Combustion Engines
Design and Optimization of Structured Multi-Functional Trapping Catalysts for Conversion of Hydrocarbons and NOx from Diesel and Advanced Combustion Engines Open
Oxides of nitrogen in the form of nitric oxide (NO) and nitrogen dioxide (NO2) commonly referred to as NOx, is one of the two chemical precursors that lead to ground-level ozone, a ubiquitous air pollutant in urban areas. A major source of…
Effects of CO and H2O Co-Feed on the Adsorption and Oxidation Properties of a Pd/BEA Hydrocarbon Trap Open
Hydrocarbon traps for exhaust emissions control adsorb hydrocarbons in low temperature exhaust and release them as the exhaust warms up. In this work, a Pd/BEA hydrocarbon trap was tested under lean exhaust conditions using ethylene and do…
View article: Integration of an Oxidation Catalyst with Pd/Zeolite-Based Passive NOx Adsorbers: Impacts on Degradation Resistance and Desorption Characteristics
Integration of an Oxidation Catalyst with Pd/Zeolite-Based Passive NOx Adsorbers: Impacts on Degradation Resistance and Desorption Characteristics Open
Fully ion-exchanged Pd/SSZ-13 model passive NOx adsorbers (PNA) exhibit significant NOx storage capability, achieving NOx-to-Pd ratios of 1, and NOx desorption at higher temperatures, where downstream NOx reduction catalysts are active, un…
Condition-Dependent Pd Speciation and NO Adsorption in Pd/Zeolites Open
Metal ions exchanged on zeolites represent a unique bridge between heterogeneous solid materials and homogeneous inorganic chemistry. The complexing of exchanged metal ions with H2O or NO, is of particular relevance for a number of reactio…
View article: Coupled NO and C<sub>3</sub>H<sub>6</sub> Trapping, Release and Conversion on Pd/BEA: Evaluation of the Lean Hydrocarbon NO<sub><i>x</i></sub> Trap
Coupled NO and C<sub>3</sub>H<sub>6</sub> Trapping, Release and Conversion on Pd/BEA: Evaluation of the Lean Hydrocarbon NO<sub><i>x</i></sub> Trap Open
Automotive emission control catalysts are not effective in eliminating CO, hydrocarbons (HCs), and NOx during engine cold start (below 200 °C). In this study, the effectiveness of coupled low-temperature NOx and C3H6 trapping and conversio…
Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation Open
This work investigates the morphological control of the anisotropic [Zn2(NDC)2(DABCO)]n MOF (Metal organic framework) and the subsequent adsorption characteristics for CO2/CH4 gas separation. Morphology of the MOF crystals is controlled by…
View article: Mechanistic Aspect of N2O Formation Over Pt–Ba/γ-Al2O3 Catalysts
Mechanistic Aspect of N2O Formation Over Pt–Ba/γ-Al2O3 Catalysts Open
NOX reduction in lean-burn gasoline or diesel engines is challenging in the oxidizing environment, and depending on the after-treatment technology, can lead to by-product, such as N2O or ammonia, formation. The current study focuses on pos…
View article: Waste into Fuel—Catalyst and Process Development for MSW Valorisation
Waste into Fuel—Catalyst and Process Development for MSW Valorisation Open
The present review paper highlights recent progress in the processing of potential municipal solid waste (MSW) derived fuels. These wastes come from the sieved fraction (∅ < 40 mm), which, after sorting, can differ in biodegradable fractio…
Modelling Selective Catalytic Reduction (SCR) of NOx to N2 over Cu-SSZ-13 Open
Modelling Selective Catalytic Reduction (SCR) of NOx to N2 over Cu-SSZ-13 Reduction of NOx emissions from diesel engine exhaust is an environmental issue driven by increasingly stringent emission regulations. Cu-SSZ-13 catalysts have been …
From Active‐Site Models to Real Catalysts: Importance of the Material Gap in the Design of Pd Catalysts for Methane Oxidation Open
The front cover artwork for Issue 9/2017 is provided by the University of Houston. The image shows the charge density difference in the transition state of methane activation over a single crystal Pd(1 0 0) surface as obtained from electro…
From Active‐Site Models to Real Catalysts: Importance of the Material Gap in the Design of Pd Catalysts for Methane Oxidation Open
Rapid computational screening to aid novel catalyst design has evolved into an important and ubiquitous tool in modern heterogeneous catalysis. A possible shortcoming of this approach, however, is the material gap, that is, simplified comp…