A5081165916- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Catalysis for Biomass Conversion
- Oxidative Organic Chemistry Reactions
- Polyoxometalates: Synthesis and Applications
- Catalysts for Methane Reforming
- Electrocatalysts for Energy Conversion
- Mesoporous Materials and Catalysis
- Nanomaterials for catalytic reactions
- Ammonia Synthesis and Nitrogen Reduction
- Surface Chemistry and Catalysis
- Zeolite Catalysis and Synthesis
- Asymmetric Hydrogenation and Catalysis
- Transition Metal Oxide Nanomaterials
- Carbon dioxide utilization in catalysis
- Advanced Photocatalysis Techniques
- Chemical Synthesis and Characterization
- Advanced Materials Characterization Techniques
- Electron and X-Ray Spectroscopy Techniques
- Hydrogen Storage and Materials
- Iron oxide chemistry and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Chemical Synthesis and Reactions
- Advancements in Solid Oxide Fuel Cells
Cardiff University
2015-2025
Google (United States)
2017
University of Wollongong
2014-2015
Institute of Catalysis and Petrochemistry
2015
Iron copper zeolite (Fe-Cu-ZSM-5) with aqueous hydrogen peroxide is active for the selective oxidation of methane to methanol. involved in activation carbon–hydrogen bond, while allows methanol form as major product. The catalyst stable, re-usable and activates giving >90 % selectivity 10 conversion a closed catalytic cycle (see scheme).
Ein Eisen-Kupfer-Zeolith (Fe-Cu-ZSM-5) katalysiert die selektive Oxidation von Methan zu Methanol mit wässrigem Wasserstoffperoxid. Das Eisen aktiviert Kohlenstoff-Wasserstoff-Bindung, während das Kupfer dafür sorgt, dass als Hauptprodukt gebildet wird. Der Katalysator ist stabil und wiederverwendbar >90 % Selektivität 10 Umsatz in einem geschlossenen Katalysezyklus (siehe Schema). Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents...
The selective oxidation of methane to methanol, using H2O2, under mild reaction conditions was studied bimetallic 1 wt % AuPd/TiO2 prepared by stabilizer-free sol-immobilization. as-prepared catalysts exhibited low, unselective activity and deleterious H2O2 decomposition, which ascribed the small mean particle size supported AuPd nanoparticles. Heat treatments were employed facilitate growth, yielding an improvement in catalyst turnover frequency decreasing decomposition rate. effect support...
The rise in atmospheric CO2 concentration and the concomitant global surface temperature have prompted massive research effort designing catalytic routes to utilize as a feedstock. Prime among these is hydrogenation of make methanol, which key commodity chemical intermediate, hydrogen storage molecule, possible future fuel for transport sectors that cannot be electrified. Pd/ZnO has been identified an effective candidate catalyst this reaction, yet there no attempt gain fundamental...
Recent advances in the oxidation of alcohols to methyl esters using metal nanoparticles have paved way for more environmentally benign processes, operating at lower reaction temperatures with high product selectivity. Here, we demonstrate use bimetallic 1 wt % Au–Pd/TiO2 catalysts that achieve activity methanol formate low temperature. The application a water extraction treatment retain size-stabilized Au–Pd nanoparticles, contrast standard thermal treatment, provides most active catalyst...
A post-synthesis method was developed to reduce the extra-framework titanium in TS-1 zeolites which TPAOH used convert amorphous Ti zeolitic phases.
Discovering catalysts that can decompose N2O at low temperatures represents a major challenge in modern catalysis. The effect of preparative route on decomposition activity has been examined for PrBaCoO3 perovskite catalyst. Initially, citric acid preparation was utilized, where the A site ratio altered order to increase phase purity. Comparable compositions were then prepared by an oxalic precipitation method and supercritical antisolvent (SAS) technique produce perovskites with higher...
Abstract PdZn/TiO 2 catalysts have been investigated for the hydrogenation of CO to methanol. Varying ratio Pd and Zn using TiO as a support has dramatic effect on catalytic performance. Chemical vapour impregnation was used produce PdZn alloys X-ray diffraction, photoelectron spectroscopy, scanning transmission electron microscopy revealed changes in structure at varying total molar ratios. Compared monometallic Pd/TiO , introducing low loading drastically product selectivity. When is...
The behaviour of Pd deposited on Ga2O3 and In2O3 by CVI is compared for the hydrogenation CO2 to methanol. alone inactive, but has good conversion, selectivity as high 89% CH3OH. addition catalysts had relatively little effect In2O3, in contrast, Ga2O3, a very big effect, inducing activity Both oxides form intermetallics - Pd2In3 Pd2Ga. However, In there also thick (~3 nm) overlayer oxide, while Ga catalyst was no such overlayer. Hence this why Indium performance with Ga. Furthermore, Zn...
Deuterated amines are key building blocks for drug synthesis and the identification of metabolites new pharmaceuticals, which drives search general, efficient, widely applicable methods selective such compounds. Here, we describe a multifunctional phosphorus-doped carbon-supported Fe catalyst with highly dispersed isolated metal sites that allow tandem reductive amination-deuteration sequences. The optimal phosphorus-modified Fe-based shows excellent performance in terms both reactivity...
Electric plasma activation of methane opens up the possibility to produce ethene, an important platform chemical in industry, by using sustainable resources like biogas or hydrogenated carbon dioxide and electricity from renewable energies. The ethene stream such pyrolysis plants contains, however, much higher concentrations acetylene (≥ 15 vol.%) compared conventional steam cracking naphtha (< 2 vol.%). In this study, silver‐palladium catalysts various compositions supported on alumina...
Oxidation is one of the major pathways for synthesis chemical intermediates. The epoxidation alkenes by electrophilic addition oxygen to a carbon–carbon double bond remains most significant challenges in oxidation. Of key importance use as oxidant, but many cases more reactive, and less green, sources are used. We report solvent-free cyclooctene with air using supported gold catalysts small amounts hydroperoxide. identify appropriate reaction conditions maximize selectivity epoxide. In...
Selective oxidation is of immense importance in the synthesis chemical intermediates and epoxidation alkenes by electrophilic addition oxygen to a carbon–carbon double bond remains one most significant challenges catalysis. Although molecular environmentally benign oxidant many cases, far more reactive forms are required achieve reaction, this can lead by-products with heavy environmental burden respect their disposal. We show that gold supported on graphite very effective catalyst for...
Abstract The efficacy of using cerium oxide foams as a support for Au nanoparticles and subsequent use oxidation catalysts have been investigated. These were synthesized L ‐asparagine to produce coordination polymer foam, which was calcined give the foam. supported on CeO 2 sol‐immobilization method. activity Au/foamCeO solvent‐free benzyl alcohol superior standard Au/CeO catalysts, found be dependent crystallization time precursor A 4 h most active catalyst, retained high selectivity...
MnO2 was synthesised as a catalyst support material using hydrothermal method. This involved reacting MnSO4⋅H2O and (NH4)2S2O8 at 120 °C for range of crystallisation times, which affords control over the morphology phase composition formed. Gold deposited on these supports sol-immobilisation, impregnation deposition precipitation methods, resultant materials were used oxidation benzyl alcohol carbon monoxide. The effect dispersion gold nanoparticles consequent catalytic performance is...