A5033243946- Catalytic Processes in Materials Science
- Nuclear Physics and Applications
- Ion-surface interactions and analysis
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Radiotherapy Techniques
- Catalysis and Oxidation Reactions
- Advanced X-ray and CT Imaging
- Radioactivity and Radon Measurements
- Electron and X-Ray Spectroscopy Techniques
- Surface Chemistry and Catalysis
- Radiation Dose and Imaging
- Asymmetric Hydrogenation and Catalysis
- Integrated Circuits and Semiconductor Failure Analysis
- Radiation Therapy and Dosimetry
- Organometallic Complex Synthesis and Catalysis
- Advanced Semiconductor Detectors and Materials
- Nanomaterials for catalytic reactions
- Medical Imaging Techniques and Applications
- Catalysis for Biomass Conversion
- Radiation Detection and Scintillator Technologies
- Zeolite Catalysis and Synthesis
- Catalysis and Hydrodesulfurization Studies
- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Electrocatalysts for Energy Conversion
Johnson Matthey (United Kingdom)
2012-2024
Catalyst
2003-2023
Johnson Matthey (Germany)
2003-2020
Cardiff University
2002-2018
University of Bath
2018
International Atomic Energy Agency
2017
Royston Hospital
2016
Australian Radiation Protection and Nuclear Safety Agency
2009-2015
RMIT University
2002-2012
MIT University
2011-2012
Glycerol is oxidised to glyceric acid with 100% selectivity using either 1% Au/charcoal or Au/graphite catalyst under mild reaction conditions (60 degrees C, 3 h, water as solvent).
The oxidation of aqueous solutions glycerol is described and discussed for Pd, Pt Au nanoparticles supported on graphite activated carbon. in a batch reactor at 60 °C 1 bar pressure using air as oxidant was initially investigated. Under these conditions, Pd catalysts give some selectivity to glyceric acid, but the main reaction products are considered be non-desired C1 by-products, e.g. CO2, HCHO HCOOH. In addition, under were totally inactive. Using an autoclave with pure oxygen 3 gave...
Gold-on-carbon catalysts are analogs of homogeneous gold that use a redox couple Au(I) and Au(III) species.
Vinyl chloride monomer (VCM) is a major chemical intermediate for the manufacture of polyvinyl (PVC), which third most important polymer in use today. Hydrochlorination acetylene route production vinyl chloride, since based regions world where coal abundant. Until now, mercuric supported on carbon used as catalyst commercial process, and this exhibits severe problems associated with lifetime mercury loss. It has been known over 30 years that gold superior catalyst, but it only now being...
Abstract A LEED and XPS study of the adsorption naphthalene, quinoline, 10,11‐dihydrocinchonidine on Pt(111) at 300K has shown that only naphthalene forms an ordered ad‐layer, quinoline alkaloid adsorb in a disordered state without decomposition. These experiments do not support hypothesis basis template model for interpretation enantioselectivity Pt‐catalysed pyruvate hydrogenation. The is accordingly reviewed. Molecular modelling studies show highly specific 1:1 interaction between...
The output signal of an organic scintillator probe consists a scintillation and Cerenkov fluorescence radiation (CFR) when the is exposed to mega-voltage photon or electron beam. CFR usually unwanted because it comes from both light guide so not proportional absorbed dose in scintillator. A new detector system has been constructed for measurement pulsed beams that are commonly used radiotherapy treatment, eliminating most signal. uses long decay constant BC-444G (Bicron, Newbury, OH, USA)...
The effect of the gold oxidation state and carbon structure on activity Au/C catalysts for hydrochlorination acetylene was investigated by a combined approach using TPR, XPS porosimetry determinations. catalyst in synthesis vinyl chloride monomer found to be dependent presence Au3+ species catalyst. However, preparing with different content it possible determine existence threshold amount, beyond which excess not active reaction. This explained sites at interface, just top Au nanoparticles,...
The active site for a Au/C catalysts acetylene hydrochlorination involves Au<sup>+</sup>–Au<sup>3+</sup>couple.
This Viewpoint discusses the implications of net zero energy transition on traditional chemical feedstocks and catalytic elements. While full impact upcoming changes is difficult to assess, some trends from scenarios already underway can be mapped. For example, a steady growth in electric passenger vehicles will diminish transportation-related petroleum refining output, which could then create feedstock gaps supply/demand dynamics certain critical metals. These impacts present unexpected...
Abstract The use of platinum group metal (PGM) catalysts for the selective oxidation various primary and secondary alcohols under mild conditions is described. High throughput screening (HTS) techniques have been used to identify trends in catalyst activity product selectivity. Using air as oxidant water solvent 5% Pt, 1% Bi/C has identified an efficient transformation 2‐octanol 2‐octanone 1‐octanol octanoic acid. To improve aldehyde selectivity promotion Pt/Al 2 O 3 Ru/C investigated. H...
To establish local diagnostic reference levels (LDRLs) at the Royal Children's Hospital (RCH) Melbourne, Parkville, Australia, for typical paediatric CT examinations and compare these with international (DRLs) to benchmark practice. In addition, aim was develop a method of analysing scan parameters enable identification areas optimisation.A retrospective audit patient records brain, chest abdomen/pelvis undertaken. Demographic information, examination dose indicators--volumetric index...
Abstract Introduction: The use of CT has rapidly increased since its introduction. Although an important medical tool for diagnosis and treatment, is recognised as being among the highest contributors to population radiation exposure. As risks associated with exposure are higher children than adults, this study assessed impact paediatric in Australia by analysing imaging trends. Methods: trends were derived from Medicare data. Comparable data a dedicated hospital (Royal Children's Hospital...
Purpose: On 1 July 2012, the Australian Clinical Dosimetry Service (ACDS) released its Optically Stimulated Luminescent Dosimeter (OSLD) Level I audit, replacing previous TLD based audit. The aim of this work is to present results from new service and complete uncertainty analysis on which audit tolerances are based. Methods: release was preceded by a rigorous evaluation InLight® nanoDot OSLD system Landauer (Landauer, Inc., Glenwood, IL). Energy dependence, signal fading multiple...
When a photon beam passes through the treatment couch or an immobilization device, it may traverse large air gap (up to 15 cm more) prior entering patient. Previous studies have investigated ability of various planning systems calculate dose immediately beyond small gaps, typically less than 5 thick, such as those within body. The aim this study is investigate Eclipse anisotropic analytical algorithm (AAA) and pencil convolution (PBC) gaps. Depth data in water for 6 MV beam, field size, 100...