A5046245868- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysts for Methane Reforming
- Catalysis and Hydrodesulfurization Studies
- Electrocatalysts for Energy Conversion
- Advancements in Solid Oxide Fuel Cells
- Advanced Photocatalysis Techniques
- Industrial Gas Emission Control
- Polyoxometalates: Synthesis and Applications
- Nanomaterials for catalytic reactions
- Chemical Looping and Thermochemical Processes
- Advanced oxidation water treatment
- Metal-Organic Frameworks: Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Mesoporous Materials and Catalysis
- Oxidative Organic Chemistry Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Thermal and Kinetic Analysis
- Zeolite Catalysis and Synthesis
- Asymmetric Hydrogenation and Catalysis
- Advanced Nanomaterials in Catalysis
- Organometallic Complex Synthesis and Catalysis
- Catalytic Cross-Coupling Reactions
University of Udine
2016-2025
National Interuniversity Consortium of Materials Science and Technology
2009-2024
U.S. National Science Foundation
2016
Division of Chemical, Bioengineering, Environmental, and Transport Systems
2016
Universitat Politècnica de Catalunya
2015
Ambiente Italia (Italy)
2015
ETH Zurich
2014
Universitat de Barcelona
2005
Colorado State University
2002
Istituto Nazionale per la Fisica della Materia
1999
Abstract Over the past several years, cerium oxide and CeO2-containing materials have come under intense scrutiny as catalysts structural electronic promoters of heterogeneous catalytic reactions. Recent developments regarding characterization ceria are critically reviewed with a special focus towards catalyst interaction small molecules such hydrogen, carbon monoxide, oxygen, nitric oxide. Relevant technological applications use in automotive exhaust emission control formulation SO x...
Engineering the shape and size of catalyst particles interface between different components heterogeneous catalysts at nanometer level can radically alter their performances. This is particularly true with CeO2-based catalysts, where precise control surface atomic arrangements modify reactivity Ce4+/Ce3+ ions, changing oxygen release/uptake characteristics ceria, which, in turn, strongly affects catalytic performance several reactions like CO, soot, VOC oxidation, WGS, hydrogenation,...
In this study, a series of conventional polycrystalline ceria and single-crystalline nanorods nanocubes were prepared by hydrothermal methods, their structural, redox, morphological properties investigated using XRD, SEM, HRTEM, BET, temperature-programmed reduction, oxygen storage capacity measurements. According to they are characterized exposure different surfaces: {100} surface for nanocubes; {100}, {110}, in part {111} nanorods; mainly ceria, with morphology dominated {111}-enclosed...
An open superstructure: A Pd/CeO2 catalyst prepared by solution combustion synthesis is three to five times more active for CH4 than the best conventional palladium-based systems. The contains an ordered, stable Pd-O-Ce surface superstructure (see picture; cyan arrow a square-planar Pd site, red undercoordinated O atom) and example of ultra-highly dispersed, PdO within oxide carrier. Detailed facts importance specialist readers are published as ”Supporting Information”. Such documents...
The surface atomic arrangement of metal oxides determines their physical and chemical properties, the ability to control optimize structural parameters is crucial importance for many applications, in particular heterogeneous catalysis photocatalysis. Whereas structures macroscopic single crystals can be determined with established methods, nanoparticles (NPs), this a challenging task. Herein, we describe use CO as probe molecule determine structure surfaces exposed by rod-shaped ceria NPs....
Abstract The determination of structure–performance relationships ceria in heterogeneous reactions is enabled by the control crystal shape and morphology. Whereas (100) surface, predominantly exposed nanocubes, optimal for CO oxidation, (111) prevalent conventional polyhedral CeO 2 particles, dominates C H hydrogenation. This result attributed to different oxygen vacancy chemistry on these facets. In contrast oxidations, hydrogenations are favored over low‐vacancy surfaces owing key role...
Abstract The use of mixed-oxides containing CeO2 as oxygen storage/release components is discussed with special focus on the applications these materials in auto-exhaust catalytic converters. Ceria easily forms solid solutions transition-metal/rare-earth oxides over a wide composition range. incorporation dopants like Zr4+, Pr3/4+, Tb3/4+ into cubic fluorite lattice strongly affects structural and energetic properties by lowering activation energy for migration increasing reducibility cerium...
The effects of the high-temperature reduction Rh/CeO2 catalyst on hydrogenation CO, CO2, acetone and ethene, hydrogenolysis ethane, in transient continuous conditions, have been investigated. (HTR) at 773 K induced a Rh–CeO2 interaction which enhances rate CO2 hydrogenation. Temperature-programmed (TPR) X-ray photoelectron spectroscopy (XPS) show Ce4+ to Ce3+ after HTR near surface layers. We suggest that oxygen vacancies support (i.e. presence Ce3+) can interact with CO moiety promoting its...