A5000693389- Advanced NMR Techniques and Applications
- Zeolite Catalysis and Synthesis
- NMR spectroscopy and applications
- Solid-state spectroscopy and crystallography
- Chemical Synthesis and Characterization
- Mesoporous Materials and Catalysis
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Molecular spectroscopy and chirality
- Hemoglobin structure and function
- Analytical Chemistry and Chromatography
- Biopolymer Synthesis and Applications
- Carbohydrate Chemistry and Synthesis
- Plant Reproductive Biology
- Crystallization and Solubility Studies
- Crystal Structures and Properties
- Enzyme Structure and Function
- Inorganic Fluorides and Related Compounds
- Advanced Cellulose Research Studies
- Heme Oxygenase-1 and Carbon Monoxide
- Coordination Chemistry and Organometallics
- Enzyme Production and Characterization
- Various Chemistry Research Topics
- Protein purification and stability
- Thermal and Kinetic Analysis
University of Cambridge
1999-2023
University College London
1992-2000
University of Ioannina
1995-1996
McGill University
1996
University of Southern California
1996
Missouri University of Science and Technology
1996
Queen Mary University of London
1996
Centre National de la Recherche Scientifique
1995-1996
University of Nottingham
1996
University College Dublin
1996
The kinetic compensation effect states that there is a linear relationship between Arrhenius parameters ln A and E for family of related processes. It widely observed phenomenon in many areas science, notably heterogeneous catalysis. This paper explores one the mathematical, rather than physicochemical, explanations isokinetic relationship. demonstrated, both theoretically by numerical simulations, random errors data generate an apparent (sometimes termed statistical effect) when true are...
The kinetic compensation effect states that there is a linear relationship between Arrhenius parameters ln A and E for family of related processes. It widely observed phenomenon in many areas science, notably heterogeneous catalysis. This paper explores mathematical, rather than physicochemical, explanations the certain situations. Three different topics are covered theoretically illustrated by examples. Firstly, systematic errors experimental data explored, it shown these create apparent...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of the aluminophosphate AlPO4-21 and AlPO4-25 by aluminum-27 double-rotation NMRR. Jelinek, B. F. Chmelka, Y. Wu, P. J. Grandinetti, Alexander Pines, Barrie, KlinowskiCite this: Am. Chem. Soc. 1991, 113, 11, 4097–4101Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 1991https://pubs.acs.org/doi/10.1021/ja00011a007https://doi.org/10.1021/ja00011a007research-articleACS PublicationsRequest...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton magic-angle-spinning NMR studies of the adsorption alcohols on molecular sieve catalystsMichael W. Anderson, Jacek Klinowski, and Patrick J. BarrieCite this: Phys. Chem. 1991, 95, 1, 235–239Publication Date (Print):January 1991Publication History Published online1 May 2002Published inissue 1 January 1991https://pubs.acs.org/doi/10.1021/j100154a046https://doi.org/10.1021/j100154a046research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIn situ solid-state NMR studies of the catalytic conversion methanol on molecular sieve SAPO-34Michael W. Anderson, Bogdan. Sulikowski, Patrick J. Barrie, and Jacek. KlinowskiCite this: Phys. Chem. 1990, 94, 7, 2730–2734Publication Date (Print):April 5, 1990Publication History Published online1 May 2002Published inissue 5 April 1990https://pubs.acs.org/doi/10.1021/j100370a002https://doi.org/10.1021/j100370a002research-articleACS PublicationsRequest...
Fully automated at-line terahertz time-domain spectroscopy in transmission mode is used to measure tablet porosity for thousands of immediate release tablets. The measurements are rapid and non-destructive. Both laboratory prepared tablets commercial samples studied. Multiple on individual quantify the random errors results. These show that refractive index precise, with standard deviation a single being about 0.002, variation between due small thickness measurement from resolution...
Abstract Previous investigations of sporopollenin using 13C Solid State Nuclear Magnetic Resonance have demonstrated differences between the major groups plants in composition this acetolysisresistant biomacromolecule. The work presented here corroborates these results and suggests that obtained from seed megaspore-membranes differs slightly pollen same plant group. Spectra NMR been subjected to multivariate analysis. This approach has provided information which may be interpreted...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdering in the framework of a magnesium aluminophosphate molecular sievePatrick J. Barrie and Jacek KlinowskiCite this: Phys. Chem. 1989, 93, 16, 5972–5974Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue 1 August 1989https://pubs.acs.org/doi/10.1021/j100353a007https://doi.org/10.1021/j100353a007research-articleACS PublicationsRequest reuse permissionsArticle Views159Altmetric-Citations54LEARN...
This paper discusses some methods of analysing TPD data for samples obeying first-order desorption kinetics and proposes several improvements to existing practice. The apply in the case when Arrhenius parameters A E each site are independent coverage, thus normally suitable characterisation porous solids. An improved implementation condensation approximation method is proposed gain an initial estimate adsorption distribution. Further, a variation that can be used function E. distribution...
The fundamental interactions of dimethyl methylphosphonate (DMMP) and chlorophosphate (DMCP) on amorphous silica nanoparticles have been investigated with transmission infrared spectroscopy temperature-programmed desorption (TPD). DMMP DMCP both adsorb molecularly to through the formation hydrogen bonds between isolated silanols phosphoryl oxygen adsorbate. magnitude shift ν(OH) mode upon simulant adsorption is correlated strength. activation energies for a single or molecule from varied...
Hydrothermal methods have conventionally enabled the synthesis of a wide range nanomaterials. However, these simple, single-step syntheses lack scalability due to need high temperatures and autogenous pressures enable dissolution reagents crystallization product. In this work, we demonstrate for first time fast continuous ceria nanoparticles at moderate conditions through combination deep eutectic solvent reline (an mixture choline chloride urea) as reaction medium heat mass transfer rate...
Molybdenum(VI) bis(imido) complexes [Mo(NR)2(S2CNEt2)2] 3a–3p have been prepared via two synthetic routes and their structures investigated. Thermolysis of [MoO2(S2CNEt2)2] 1 with 2,6-disubstituted aryl isocyanates affords air-stable 3i–3m in high yields after column chromatography, a route which fails for sterically less demanding isocyanates. A more general preparation involves room temperature addition equivalents [S2CNEt2]– to the labile [Mo(NR)2Cl2(dme)] 2a–2p (dme =...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-state cadmium-113 NMR studies on cadmium complexes with glycine, L-alanine, and L-cysteinePatrick J. Barrie, Angeli Gyani, Majid Motevalli, Paul O'BrienCite this: Inorg. Chem. 1993, 32, 18, 3862–3867Publication Date (Print):September 1, 1993Publication History Published online1 May 2002Published inissue 1 September 1993https://pubs.acs.org/doi/10.1021/ic00070a016https://doi.org/10.1021/ic00070a016research-articleACS PublicationsRequest reuse...
The complex Na2[Bi2(cit)2]·7H2O (H4cit = 3-carboxy-3-hydroxypentane-1,5-dioic acid) crystallized during reactions of the antiulcer drug ranitidine bismuth citrate with tripeptide glutathione (γ-L-Glu-L-Cys-Gly) at low pH. X-Ray analysis showed one [Bi(cit)]– fragment per asymmetric unit Bi3+ chelated to a terminal carboxylate group; also binds, in tridentate mode, an equivalent (related first by C2 axis)via oxygen donor from each remaining two groups and alkoxy group. Both ends resultant...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT77Se Solid-State NMR Studies of [M(Se4)2]2- Anions (M = Zn, Cd, Hg)Patrick J. Barrie, Robin H. Clark, Robert Withnall, Duck-Young Chung, Kang-Woo Kim, and Mercouri G. KanatzidisCite this: Inorg. Chem. 1994, 33, 6, 1212–1216Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/ic00084a040https://doi.org/10.1021/ic00084a040research-articleACS...
W. Kolodziejski, P. J. Barrie, H. He and Klinowski, Chem. Soc., Commun., 1991, 961 DOI: 10.1039/C39910000961