63 Result(s)

Article

The advantages and future potential of single-site heterogeneous catalysts

Using open-structure (nanoporous) solids, advantage may be taken of single-site catalytically active centres to effect an enormous range of conversions of organic compounds where regio-selectivity and shape-se...

John Meurig Thomas, Robert Raja in Topics in Catalysis (2006)

Article

Benign oxidants and single-site solid catalysts for the solvent-free selective oxidation of toluene

Two types of single-site heterogeneous catalysts have been designed so as to facilitate either the side-chain oxidation or ring-hydroxylation of toluene in O₂ (solvent-free) or by employing aqueous (H₂O₂) or orga...

Robert Raja, John Meurig Thomas, Valeria Dreyer in Catalysis Letters (2006)

Article

The tortuous tale of the catalytically active site

The emergence of the concept of the active site in heterogeneous catalysts is traced from the early, tentative view of H.S. Taylor in 1925 to the structurally well-defined active site (at αTiCl₃ prismatic faces) ...

John Meurig Thomas in Topics in Catalysis (2006)

Article

Ilya Moiseev: A Personal Note

John Meurig Thomas in Journal of Cluster Science (2005)

Article

Preface

Thomas Maschmeyer, Koos Jansen, John Meurig Thomas in Topics in Catalysis (2004)

Article

On the Similarity in Catalytic Activity of Homogeneous and Heterogeneous Cr(VI) Catalysts in the Decomposition of Cyclohexyl Hydroperoxide

Pyridinium dichromate, chromium trioxide and CrAlPO-5 showed a very similar selectivity pattern in the decomposition of cyclohexyl hydroperoxide. CrAPO-5 turned out to be a real heterogeneous catalyst, most li...

Wim Buijs, Robert Raja, John Meurig Thomas, Harry Wolters in Catalysis Letters (2003)

Article

A New Approach to the Design of Heterogeneous Single-Site Enantioselective Catalysts

We analyze the merits of an approach to the design of enantioselective catalysts that relies on constraining an anchored organometallic complex at the inner walls of mesoporous silica. Two distinct metal cente...

Matthew D. Jones, Robert Raja, John Meurig Thomas… in Topics in Catalysis (2003)

Article

The Extremely High Specificity of N-Methyldicyclohexylamine for the Production of the Large-Pore Microporous AFI Material

We describe a highly efficient synthesis of microporous aluminophosphate AlPO₄-5 and its heteroatom-substituted variants, using N-methyldicyclohexylamine as a structure-directing agent that, in addition, does not...

Manuel Sanchez-Sanchez, Gopinathan Sankar, Alexandra Simperler… in Catalysis Letters (2003)

Article

Preface: Electron Microscopy and the Characterization of Heterogeneous Catalysts

Pratibha L. Gai, John Meurig Thomas in Topics in Catalysis (2002)

Article

The Electron Microscope Is an Indispensable Instrument for the Characterisation of Catalysts

No other single instrument rivals the electron microscope in the wealth of structural (atomic, nanoscopic, mesoscopic and microscopic), topographic and electronic information that it provides in the characteri...

John Meurig Thomas, Osamu Terasaki in Topics in Catalysis (2002)

Article

Towards an Environmentally Acceptable Heterogeneous Catalytic Method of Producing Adipic Acid by the Oxidation of Hydrocarbons in Air

A survey is given of the catalytic methods potentially available for the production of adipic acid by the oxidation of readily available hydrocarbon precursors under environmentally benign conditions. Encourag...

Robert Raja, Sang-Ok Lee, Manuel Sanchez-Sanchez, Gopinathan Sankar… in Topics in Catalysis (2002)

Chapter

Technique and Progress in Surface and Solid-State Science

Field-ion microscopy (and cognate techniques such as single atom probe detection), as well as photoelectron spectroscopy (both of the U.V. —stimulated and X-ray-stimulated kind) are chosen as typical examples ...

John Meurig Thomas in Surface Chemistry and Catalysis (2002)

Article

On the nature of isolated active sites in open-structure catalysts for the aerial oxidation of alkanes

Unique insights into structural aspects of ternary and quaternary oxide phases of selective oxidation catalysts containing bismuth and molybdenum are obtainable via high-resolution transmission electron micros...

John Meurig Thomas in Topics in Catalysis (2001)

Article

Towards molecular sieve inorganic catalysts that are akin to enzymes: studies of a selective cyclo-dimerization over ferrierite at ambient temperature

The solid-acid (Brønsted)-catalyzed cyclo-dimerization of 3-hydroxy-3-methylbutan-2-one (HMB) over a synthetic ferrierite molecular sieve is reported. HMB is a stable liquid at ambient temperatures but in acid...

Sang-Ok Lee, Gopinathan Sankar, Simon J. Kitchin, Markus Dugal… in Catalysis Letters (2001)

Article

Gabor Arpad Somorjai: A Tribute

John Meurig Thomas in Topics in Catalysis (2000)

Article

Facile heterogenisation of molecular Ti(OSiPh3)4 to form a highly active epoxidation catalyst

The simple grafting procedure of Ti(OSiPh₃)₄ onto the internal surface of MCM-41 to produce an epoxidation catalyst of high activity and selectivity is described. The presence of the phenyl groups on each titaniu...

Martin P. Attfield, Gopinathan Sankar, John Meurig Thomas in Catalysis Letters (2000)

Article

Preface

John Meurig Thomas in Catalysis Letters (2000)

Article

Combining X‐ray absorption with X‐ray diffraction for the structural elucidation of catalysts

We describe how the combined XAS/XRD technique can provide powerful information on the structures of catalytically active centres. We consider some of the most industrially important catalysts, including Fe‐ZS...

Gopinathan Sankar, John Meurig Thomas, C. Richard A. Catlow in Topics in Catalysis (2000)

Article

Energetic Victorians

John Meurig Thomas in Nature (1999)