A5088532593- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Advancements in Solid Oxide Fuel Cells
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Materials Characterization Techniques
- Industrial Gas Emission Control
- Electronic and Structural Properties of Oxides
- Ultrasound and Cavitation Phenomena
- Magnetic and transport properties of perovskites and related materials
- Nanomaterials for catalytic reactions
- X-ray Diffraction in Crystallography
- nanoparticles nucleation surface interactions
- Electrochemical Analysis and Applications
- Art Therapy and Mental Health
- Catalysts for Methane Reforming
- Advanced NMR Techniques and Applications
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- Ultrasonics and Acoustic Wave Propagation
- Schizophrenia research and treatment
- Advanced materials and composites
- Mesoporous Materials and Catalysis
- Microstructure and mechanical properties
- Music Therapy and Health
Yara (Norway)
2018-2025
Norsk Hydro (Norway)
2018-2025
Norsk Hydro (Germany)
2019
University of Brighton
2013-2014
Brighton and Sussex Medical School
2013
Imperial College London
1996-2012
University of Oxford
1995-1997
Royal Institution of Great Britain
1991-1993
UCL Australia
1993
<b>Objectives</b> To evaluate the clinical effectiveness of group art therapy for people with schizophrenia and to test whether any benefits exceed those an active control treatment. <b>Design</b> Three arm, rater blinded, pragmatic, randomised controlled trial. <b>Setting</b> Secondary care services across 15 sites in United Kingdom. <b>Participants</b> 417 aged 18 or over, who had a diagnosis provided written informed consent take part study. <b>Interventions</b> Participants, stratified...
Metallic Pd/Ni gauzes, located downstream of the Pt/Rh ammonia oxidation catalyst nets in Ostwald process, is current technology for capturing volatile gas phase platinum and rhodium species lost from combustion through evaporation. In this screening study, we explore four oxide families, ABO3 perovskites, (ABO3)n(AO) Ruddlesden–Popper (RP) phases, AO rock salt, A2O3 sesquioxide type oxides, as alternative materials capture. It was found that all tested nickelates, LaNiO3, NdNiO3, La2NiO4,...
Cu–Zn hydroxycarbonates have been studied as precursors of Cu–ZnO catalysts, with particular reference to the effect on catalyst activity ageing precursor prior decomposition and reduction. The obtained by precipitation from mixed nitrate solution (Cu/Zn molar ratio 2:1) at 333 K pH 7.0 consisted zincian malachite ≈ 85:15) aurichalcite. was aged in mother liquor for various times. Characterisation XRD, i.r., DTA, electron microscopy, EDAX XPS showed that led loss aurichalcite production a...
The mixed ionic‐electronic conductor (LSCF) is a candidate for use as the membrane material in pressure‐driven air separator. However long‐term stability of these materials major concern commercial realization devices. In an attempt to assess under realistic operating conditions such system, samples LSCF were exposed atmospheres at 750°C. Degradation was studied using Raman spectroscopy and X‐ray diffraction. Oxygen isotope exchange combined with secondary ion mass spectrometry used observe...
Objective To examine the clinical effectiveness and cost-effectiveness of referral to group art therapy plus standard care, compared with an activity care alone, among people schizophrenia. Design A three-arm, parallel group, single-blind, pragmatic, randomised controlled trial. Participants were via independent remote telephone randomisation service using permuted blocks, stratified by study centre. Setting Study participants recruited from secondary mental health social services in four UK...
We have evaluated the kinetics of catalytic oxidation NO to NO2 using a Pt/alumina catalyst, under conditions relevant industrial nitric acid production: and steam contents up 5% 20%, respectively, with temperatures from 250 350 °C, pressures 4.7 bar. The objective is replace current homogeneous process, which requires cooling process gas long residence time, more intensive heterogeneous allowing heat reaction (114 kJ/mol) be recovered. This may give 10% improvement in overall recovery and,...
The Ostwald process is one of the commercial pathways for production nitric acid (HNO3), a key component in nitrate fertilizers. mature, extensively studied, and highly optimized process, there still room further intensification. can be intensified by catalyzing homogeneous oxidation oxide to nitrogen dioxide. In this work, we explore NO NO2 capacity ruthenium on γ-Al2O3 support wash-coated cordierite monolith. lab-scale setup with simulated feed comprising 10% NO, 6% O2, 15% H2O rest Ar, 8%...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCobalt-substituted aluminophosphate molecular sieves: x-ray absorption, infrared spectroscopic, and catalytic studiesJiesheng Chen, Gopinathan Sankar, John Meurig Thomas, Ruren Xu, G. Neville Greaves, David WallerCite this: Chem. Mater. 1992, 4, 6, 1373–1380Publication Date (Print):November 1, 1992Publication History Published online1 May 2002Published inissue 1 November...
Low-temperature nitric oxide oxidation using silver promoted manganese catalyst can reduce energy footprint of industrial acid production.
Nitric acid (HNO3) is an important building block in the chemical industry. Industrial production takes place via Ostwald process, where oxidation of NO to NO2 one three steps. The reaction carried out as a homogeneous gas phase reaction. Introducing catalyst for this can lead significant process intensification. A series LaCo1−xMnxO3 (x = 0, 0.25, 0.5 and 1) LaCo1−yNiyO3 (y 0.50, 0.75 were synthesized by sol-gel method characterized using N2 adsorption, ex situ XRD, SEM TPR. All samples had...
Oxidation of nitric oxide is one the main steps in Ostwald process for industrial acid production. This work summarizes use γ-Al2O3 supported Ru catalyst to study oxidation NO NO2 at ambient and 4 bar pressure with a feed 10% NO, 6% O2, 15% H2O, rest Ar. The was synthesized using wet impregnation characterised by BET, CO chemisorption, H2-TPR, XPS, XRD, in-situ XAS-XRD DRIFTS. We report activity kinetics ruthenium under realistic plant conditions. exhibited promising low-temperature 72% 340...
ADVERTISEMENT RETURN TO ISSUEArticleNEXTTime-resolved energy-dispersive and conventional EXAFS studies of the interactions nitrous oxide with supported copper catalystG. Sankar, J. M. Thomas, D. Waller, W. Couves, C. R. A. Catlow, G. N. GreavesCite this: Phys. Chem. 1992, 96, 19, 7485–7489Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCombined Rietveld-molecular dynamics powder diffraction approach to the location of molecules in porous solids: application 1,4-dibromobutane zeolite YZbigniew A. Kaszkur, Richard H. Jones, David Waller, C. Catlow, and John M. ThomasCite this: J. Phys. Chem. 1993, 97, 2, 426–431Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue 1 January...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn in situ, energy-dispersive x-ray diffraction study of natural gas conversion by carbon dioxide reformingA. T. Ashcroft, A. K. Cheetham, R. H. Jones, S. Natarajan, J. M. Thomas, D. Waller, and ClarkCite this: Phys. Chem. 1993, 97, 13, 3355–3358Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 April...
Platinum-rhodium gauzes are frequently used to catalyse the high temperature ammonia oxidation step for production of synthetic nitrogen-based fertilisers. The suffer from Pt loss in form platinum dioxide (PtO 2 ), due highly exothermic nature reaction. Industrially this is mitigated by installing one or more palladium-nickel catchment directly downstream combustion gauzes, capture lost Pt. Pd-Ni undergo severe structural modification during operation. In study, we undertake a systematic...