Showing papers in "Journal of Molecular Catalysis in 1983"

TL;DR: In this paper, it was shown that monomeric paramagnetic Ni(I) species, dispersed in X-type zeolite or on SiO2, can reversibly bind ligands (L) such as CO, C2H4 and C3H6 to lead to various Ni(L)+n species, depending on the pressure.

TL;DR: In this article, a Keggin-type heteropoly acid has been shown to have high catalytic activities for the cleavage reactions of epoxides, tetrahydrofuran, dibutyl ether and butyl methyl ether with acetic acid, acetic anhydride andbutyl acetate in the non-aqueous homogeneous liquid phase at 30-118 °C.

TL;DR: In this paper, a brief analysis of transient kinetic data and of the factors affecting transient kinetic experiments in 'homogeneous' and 'heterogeneous' catalysis is presented. But the analysis is limited to the case of single-input single-out (SISO) and single-output (SIMO) catalysis.

TL;DR: In this article, the authors studied the carbonylation of various alcohols in the presence of alkali metals and found that the reaction occurs at ca. 60°C and 4000 kPa, and is selective to the alcohol formate with traces of alkaline formate as an unwanted side product.

TL;DR: In this paper, the anionic cluster [Ru6C(CO)16]2− was identified on the catalyst, which results from the reaction of [HR3(C)11]− with CO + H2.

TL;DR: In this paper, a rhodium-catalyzed formaldehyde hydroformylation as a critical step in the synthesis of ethylene glycol from syngas has been studied.

TL;DR: Lower than expected values for the adsorption limit and for the 00l lattice expansion indicate uncoiling or flattening of the enzyme in the intercalated state, suggesting that the enzyme uncoils on the interlayer surfaces of the mineral.

TL;DR: The most active homogeneous catalyst known for the selective dehydrogenation of 2-propanol has been found to form from Rh2(OAc)4 by adding PPh3 in situ as mentioned in this paper.

TL;DR: In this article, it is suggested that these ions could be precursors of active complexes in oligomerization reactions, and the similarity with homogeneous catalysis by organonickel complexes is emphasized.

TL;DR: In this paper, a series of test reactions were carried out on the Catal.yst supports and the results showed that the surface acidic sites affect the decomposition of the organic solvation sphere around the metal atom/cluster and thus affect the deposition/nucleation onto the support surface.

TL;DR: In this paper, the state of the field of supported catalysts from organometallic precursors is reviewed, with the view of using them to study the problems of fundamental catalysis.

TL;DR: In this paper, a polymer-supported chiral catalyst was used to obtain high optical yields of hydratropaldehyde and styrene in the presence of stannous chloride with a 1:1 mixture of H2/CO.

TL;DR: In this paper, the authors combined two recent developments in zeolite synthesis and modification to demonstrate a new approach to the generation of metalbearing, medium-pore, shape-selective zeolites for use as catalysts in Fischer-Tropsch conversions.

TL;DR: In this article, a technique for entrapping very small iron clusters within the supercages of faujasite zeolites is described, and the metal cluster-zeolite compositions are prepared in a single-step process using metal-vapour solution-phase methods under extremely mild reaction conditions.

TL;DR: In this article, the mechanisms and synthetic applications of catalytic oxygen transfer processes are examined, focusing on reactions with potential commercial utility and/or exhibiting unusual chemo-, regio-and stereoselectivities.

TL;DR: In this article, the organometallic chemistry which occurs during the adsorption of Os3(CO)12 on magnesia is described at a molecular level, where the simple physisorption is followed by oxidative addition of hydroxyl groups to an Os-Os bond.

TL;DR: In this paper, a review of catalyzed and non-catalyzed borohydride reductions is presented by the functional groups which are reduced and also reviewed are some of the photocatalyzed and reduced by supported borhydride reagents in inert solvents.

TL;DR: In this paper, the adsorption and reaction of cyanogen on Cu(110) and oxygen-pretreated Cu (110) surfaces has been studied using temperature-programmed desorption, and photoelectron spectroscopy.

TL;DR: In this paper, the reaction of rhodium carbonyl clusters to catalyze two types of reactions: (1) Carbon-hydrogen bond activation of aromatic compounds and (2) Cross-hydrocarbonylation of acetylenes and olefins.

TL;DR: Some aspects of the chemistry of transition metal carbonyl clusters are reviewed in the following areas: (i) aspects of molecular chemistry of metal clusters and of particular C1 species, bonded to the metal frame of the clusters, which can be models for a mechanistic approach to catalytic CO reduction; (ii) homogeneous catalysis of syn-gas with metal clusters, with particular reference to C1 chemistry; and (iii) heterogeneous Catalysis in the same area with metal clustering supported on inorganic oxides as mentioned in this paper.

TL;DR: In this paper, a series of five one-component catalysts has been investigated: (η 3 -C 8 H 13 )Ni(CH 3 COCHCOCH 3 ) (1a), (α, β)-H elimination reaction, (α), β-H elimination, and (α) H elimination.

TL;DR: It was shown that the decrease in intramolecular protein mobility correlates directly with the increase in its stability against dissocation, and new methods of ESR spectroscopy were used to study the mobility of native and crosslinked protein.

TL;DR: The structure, morphology and composition of 30/70 and 67/33 Cu/ZnO catalysts were determined for methanol synthesis in this paper, and the results indicated that the zinc oxide phase contained an average copper concentration of approximately 2 to 3 at.

TL;DR: In this paper, the authors demonstrate that the photocatalytic and thermal catalytic activity of Pt-TiO 2 for the waters-gas shift reaction can be significantly enhanced by high-temperature treatment with H 2.

TL;DR: In this paper, a series of phenyl-substituted arylmethyl sulphides and of cyclohexene and 1-methylcyclohexenes by hydrogen peroxide in the presence of catalytic amounts of WO 5 · HMPT · H 2 O and W(CO) 6 has been studied in ethanol (HMPT = hexamethyl phosphoric acid triamide).

TL;DR: Isoprene has been telomerized with a variety of symmetrical secondary amines using palladium-trialkylphosphite catalysts as discussed by the authors, and the reactivity of the amines is mainly controlled by their stereochemical properties; thus dimethylamine reacted smoothly with isoprene, whereas diisopropylamine gave a sluggish reaction.