Structure and Catalytic Properties

S. Rossignol, C. Micheaud-Especel, and D. Duprez, Structural and catalytic properties ofZr-Ce-0 mixed oxides. Role of the anionic vacancies, Stud. Surf. Sci. Catal. 130, 3327-3332 (2000). 

Recently, the distribution of 2,3-dihydroxybenzoate decarboxylase has been found in a variety of fungal strains (unpubhshed data), and the carboxylation activity for catechol is confirmed by the reaction using resting cells (or cell-free extract) in the presence of 3M KHCO3. The detailed comparative studies of enzyme structures and catalytic properties between 2,3-dihydroxybenzoate decarboxylase and 3,4-dihyroxybenzoate decarboxylase might explain how the decarboxylases catalyze the regioselective carboxylation of catechol. 

Correlation has been suggested between the morphology, electronic structure and catalytic properties of supported gold nanoparticles with special attention to the role of the substrate/interface behaviour. 

The synthesis, structure, and catalytic properties of a Pd11 complex with a partially hydrogenated ligand, shown in Figure 31, are described.393 This study provides the first asymmetric epoxidation of alkenes catalyzed by a palladium complex.393... 

Kedishvili NY, Bosron WF, Stone CL, Hurley TD, Peggs CF, Thomasson HR, Popov KM, Carr LG, Edenberg HJ, Li T-K. Cloning and expression of a human stomach alcohol dehydrogenase Comparison of structure and catalytic properties with the liver isoenzymes. J Biol Chem 1995 280 3625-3630. 

A. Fidalgo, R. Ciriminna, L. M. Ilharco and M. Pagliaro, Role of the Alkyl-Alkoxide Precursor on the Structure and Catalytic Properties of Hybrid Sol-Gel Catalysts, Chem. Mater., 2005, 17, 6686. 

Textural mesoporosity is a feature that is quite frequently found in materials consisting of particles with sizes on the nanometer scale. For such materials, the voids in between the particles form a quasi-pore system. The dimensions of the voids are in the nanometer range. However, the particles themselves are typically dense bodies without an intrinsic porosity. This type of material is quite frequently found in catalysis, e.g., oxidic catalyst supports, but will not be dealt with in the present chapter. Here, we will learn that some materials possess a structural porosity with pore sizes in the mesopore range (2 to 50 nm). The pore sizes of these materials are tunable and the pore size distribution of a given material is typically uniform and very narrow. The dimensions of the pores and the easy control of their pore sizes make these materials very promising candidates for catalytic applications. The present chapter will describe these rather novel classes of mesoporous silica and carbon materials, and discuss their structural and catalytic properties. 

A.K. Santra and D.W. Goodman, Size-dependent electronic, structural, and catalytic properties of metal clusters supported on ultrathin oxide films, in Catalysis and Electrocatalysis at Nanoparticle Surfaces, eds. A. Wieckowski, E.R. Savinova, and C.G. Vayenas. Marcel Dekker, New York, 2003, pp. 281-309. 

S. Chavan, D.Srinivas, and R. Ratnasamy, Structure and catalytic properties of dimeric copper(II) acetato complexes encapsulated in zeolite-Y, J. Catal. 192, 286-295 (2000). 

Correlations between surface structure and catalytic properties 156... 

Our study on the synthesis, structure and catalytic properties of rhodium and iridium dimeric and monomeric siloxide complexes has indicated that these complexes can be very useful as catalysts and precursors of catalysts of various reactions involving olefins, in particular hydrosilylation [9], silylative couphng [10], silyl carbonylation [11] and hydroformylation [12]. Especially, rhodium siloxide complexes appeared to be much more effective than the respective chloro complexes in the hydrosilylation of various olefins such as 1-hexene [9a], (poly)vinylsiloxanes [9b] and allyl alkyl ethers [9c]. 

Schultz, C.P. Ylisastigui-Pons, L. Serina, L. Sakamoto, H. Mantsch, H.H. Neuhard, J. Barzu, 0. Gilles, A.M. Structural and catalytic properties of CMP kinase from Bacillus subtilis a comparative analysis with the homologous enzyme from Escherichia coli. Arch. Biochem. Biophys., 340, 144-153 (1997)... 

An earlier review treated the organometallic derivatives, including alkyl, aryl, vinyl, alkynyl, carbonyl, carbene, alkene and alkyne complexes,16 and these will not be treated here (see Table 1 for other books and reviews on organogold chemistry). Two important articles dealing with [AuCl(CO)], including its structure and catalytic properties, have been published recently.97,381... 

STRUCTURE AND CATALYTIC PROPERTIES IN HYDROGENATION OF VALERONITRILE OF RANEY NICKEL PREPARED FROM Cr AND Mo DOPED Ni2A13 ALLOYS. 

The composition of the mixed oxides can span the full range from Ti02 to Si02 and has a major influence on the properties of the materials. The procedures used to prepare the mixed oxides are also important in influencing structure and catalytic properties. The procedures can be summarized as follows ... 

The heart of this volume consists of three chapters summarizing work on catalysts that are both industrially applied and structurally well-defined the structural definition has allowed rapid progress in the development of relationships between structure and catalytic properties. 

Assaf, S.A. and Graves, J.D. (1969). Structural and catalytic properties of lobster muscle glycogen phosphorylase. Journal of Biological Chemistry 244, 5544-5555. 

Schiavo G, Papini E, Genna G, Montecucco C (1990) An intact interchain disulfide bond is required for the neurotoxicity of tetanus toxin. Infect Immun 58 4136 11 Scott AB, Magoon EH, McNeer KW, Stager DR (1989) Botulinum treatment of strabismus in children. Trans Am Ophthalmol Soc 87 174-180 discussion 180 1 Scott D (1997) Phospholipase A2 structure and catalytic properties. In Kini R (ed) Venom phospholipase A2 enzymes structure, function and mechanism. John Wiley Sons, Chichester, p 97-128. 

A number of copper) I) and copper) 11) complexes with [22]py4pz and [22]pr4pz have been isolated and structurally characterized [47—49]. Their structural and catalytic properties, as well as studies on the mechanism of the catalytic oxidation of catechol performed by some of these compounds, are discussed below. 

Krocher, O., Koppel, R.A., Froba, M. and Baiker, A. (1998) Silica hybrid gel catalysts containing group(VIII) transition metal complexes preparation, structural, and catalytic properties in the synthesis of N, N-dimethylformamide and methyl formate from supercritical carbon dioxide. Journal of Catalysis, 178, 284-298. 

D. G. Barton, S. L. Soled, G. D. Meitzner, G. A. Fuentes, and E. Iglesia, Structural and Catalytic Properties of Solid Acids Based on Zirconia Modified by Tungsten Oxide, J. Catal. 181, 57-72 (1999). 

Lin MM. Complex metal oxide catalysts for selective oxidation of propane and derivatives. II. The relationship among catalyst preparation, structure and catalytic properties. Applied Catalysis, A General. 2003 250(2) 287-303. 

Oliver JM, Lopez Nieto JM, Botella P, Mifsud A. The effect of pH on structural and catalytic properties of MoVTeNbO catalysts. Applied Catalysis, A General. 2004 257(1) 67-76. 

Auer, S. M., Wandeler, R., Gobel, U. and Baiker, A. (1997). Heterogeneous coupling of phenylethyne over Cu-Mg-Al mixed oxides - influence of catalyst composition and calcination temperature on structural and catalytic properties. J. Catal. 169, 1. 

CASHMAN, J.R., Structural and catalytic properties of the mammalian flavin-containing monooxygenase. Chem. Res. Toxicol, 1995,8,165-181. 

Proteins have an amazing range of structural and catalytic properties as a result of their varying amino acid composition. Because of this versatility, proteins serve an astonishing variety of functions in living organisms. Some of the functions of the major classes of proteins are outlined in Table 24-1. 

Sowokinos, J. R., and Preiss, J. 1982. Pyrophosphorylases in Solanum tuberosum. III. Purification, structural and catalytic properties of potato tuber ADP-glucose pyrophosphorylase. Plant Physiol. 69, 1459-1466. 

Previously, we synthesized and studied various Group 4 complexes with different ligations as alternatives to the cyclopentadienyl ligand. Here we present an overview of the synthesis, structure, and catalytic properties in the polymerization of a-olefins of several zirconium octahedral complexes. We show how the stereoregular polymerization of a-olefins using these octahedral zirconium complexes can be modulated by pressure. These results raise conceptual questions regarding the general applicability of ds-octahedral C2-sym-metry complexes to the stereospecific polymerization of a-olefins. 

Solid catalysts change their chemical composition, surface structure, and catalytic properties under the action of the reaction medium. A specific state of the catalyst which is independent of its initial state is characteristic of each particular composition of the reaction mixture and temperature. 

Many well-characterized, crystalline vanadium phosphate phases have been identified, and their structures and catalytic properties have been well documented. Some of the most widely investigated are the V " ... 

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