Effect of synthetic method on CeZr support and catalytic activity of related Rh catalyst in the oxidative reforming reaction

2019 ◽  
Vol 39 (1) ◽  
pp. 41-52 ◽  
Author(s):  
F. Basile ◽  
R. Mafessanti ◽  
A. Fasolini ◽  
G. Fornasari ◽  
E. Lombardi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synthetic Method ◽  
Rh Catalyst ◽  
Oxidative Reforming

Effect of the synthetic method on the catalytic activity of alumina: Epoxidation of cyclohexene

2015 ◽  
Vol 62 ◽  
pp. 80-87 ◽  
Author(s):  
N.E. Valderruten ◽  
W.F. Peña ◽  
A.E. Ramírez ◽  
J.E. Rodríguez-Páez
Keyword(s):  
Catalytic Activity ◽  
Synthetic Method ◽  
Epoxidation Of Cyclohexene

scholarly journals Selective Hydration of Nitriles to Corresponding Amides in Air with Rh(I)-N-Heterocyclic Complex Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 125 ◽  
Author(s):  
Csilla Enikő Czégéni ◽  
Sourav De ◽  
Antal Udvardy ◽  
Nóra Judit Derzsi ◽  
Gergely Papp ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Catalytic Properties ◽  
13C Nmr Spectroscopy ◽  
Synthetic Method ◽  
X Ray Diffraction ◽  
Nitrile Hydration ◽  
X Ray

A new synthetic method for obtaining [RhCl(cod)(NHC)] complexes (1–4) (cod = η4-1,5-cyclooctadiene, NHC = N-heterocyclic carbene: IMes, SIMes, IPr, and SIPr, respectively) is reported together with the catalytic properties of 1–4 in nitrile hydration. In addition to the characterization of 1–4 in solution by 13C NMR spectroscopy, the structures of complexes 3, and 4 have been established also in the solid state with single-crystal X-ray diffraction analysis. The Rh(I)-NHC complexes displayed excellent catalytic activity in hydration of aromatic nitriles (up to TOF = 276 h−1) in water/2-propanol (1/1 v/v) mixtures in air.

Effect of the Nature of the CeO2Support of the Rh Catalyst on Triggering the Oxidative Reforming ofn-Butane for H2Production from Ambient Temperature

ChemCatChem ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 784-789 ◽  
Author(s):  
Katsutoshi Sato ◽  
Kouhei Adachi ◽  
Yusaku Takita ◽  
Katsutoshi Nagaoka
Keyword(s):  
Ambient Temperature ◽  
Rh Catalyst ◽  
Oxidative Reforming

Catalytic Activity of Gold and Silver Nanoparticles Supported on Zinc Oxide

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Nurlykyz N. Yesmurzayeva ◽  
Zhanar A. Nurakhmetova ◽  
Gulnur S. Tatykhanova ◽  
Bagadat S. Selenova ◽  
Sarkyt E. Kudaibergenov
Keyword(s):  
Catalytic Activity ◽  
Catalyst Concentration ◽  
Synthetic Method ◽  
Impregnation Method ◽  
Optimal Conditions ◽  
One Pot ◽  
Gold And Silver Nanoparticles ◽  
H2o2 Decomposition ◽  
Supramolecular Catalysis ◽  
Vis Spectroscopy

AbstractGold (AuNPs) and silver (AgNPs) nanoparticles have been prepared by “one-pot” synthetic method in the presence of poly(N-vinylpyrrolidone) (PVP). Absorption spectra, size, morphology, and structure of AuNPs and AgNPs were studied by UV-Vis spectroscopy, DLS, SEM, and TEM. According to DLS measurements the average sizes of metal nanoparticles stabilized by PVP in aqueous solution are varied from 10 to 25 nm for AuNPs and from 6.5 to 44 nm for AgNPs. The impregnation method is used to support AuNPs and AgNPs on the surface of ZnO. The amount of AuNPs and AgNPs immobilized on the surface of ZnO does not exceed 0.2 wt.%. The catalytic activity of AuNPs and AgNPs supported on the surface of ZnO was evaluated with respect to decomposition of hydrogen peroxide. The optimal conditions for H2O2 decomposition were found to be dependent on of the amount of the catalyst, concentration of substrate, molecular weight of PVP, and temperature. The activation energy of H2O2 decomposition is equal to 44.1 kJ×mol-1. The decomposition of H2O2 in the presence of AuNPs and AgNPs supported on ZnO surface is discussed in the context of supramolecular catalysis mimicking catalase-like behavior. The recyclability of AuNPs supported on ZnO surface was tested.

Facile and novel synthetic method to prepare nano molybdenum and its catalytic activity

2015 ◽  
Vol 9 (4) ◽  
pp. 201-208 ◽  
Author(s):  
Sugumaran Sam Jaikumar ◽  
Rathinam Yuvakkumar ◽  
Rangaraj Suriya Prabha ◽  
Gopalu Karunakaran ◽  
Venkatachalam Rajendran ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synthetic Method

A NEW SYNTHETIC METHOD OF BIVALENT Rh(II) COMPLEX USING PHOSPHINATED POLYSTYRENE AND ITS CATALYTIC ACTIVITY FOR OLEFIN HYDROGENATION

1976 ◽  
Vol 5 (9) ◽  
pp. 995-998 ◽  
Author(s):  
Kiyotomi Kaneda ◽  
Masami Terasawa ◽  
Toshinobu Imanaka ◽  
Shiichiro Teranishi
Keyword(s):  
Catalytic Activity ◽  
Synthetic Method ◽  
Olefin Hydrogenation

Preparation of Lewis acid ionic liquids for one-pot synthesis of benzofuranol from pyrocatechol and 3-chloro-2-methylpropene

2015 ◽  
Vol 69 (10) ◽  
Author(s):  
Han-Cheng Zhou ◽  
Xiu-Lei Li ◽  
Juan-Li Liu ◽  
Cheng Peng ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Lewis Acid ◽  
Lewis Acidity ◽  
Synthetic Method ◽  
One Pot ◽  
Yield Plateau ◽  
One Pot Synthesis ◽  
Excellent Selectivity

AbstractSeveral Lewis acid ionic liquids (LAILs) with different acidic scales were synthesised and used as catalysts for the synthesis of benzofuranol by condensation of pyrocatechol and 3-chloro-2- methylpropene in one pot. The catalytic activity of these ionic liquids was correlated with their Lewis acidity. Low to moderate conversion with excellent selectivity to benzofuranol was obtained in the presence of the appropriate LAILs. Compared to the two-step synthetic method currently used in industry, a higher yield plateau (81.1 %) of benzofuranol was achieved in the presence of [BMIm][AlCl

scholarly journals Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes

2018 ◽  
Vol 14 ◽  
pp. 2779-2788 ◽  
Author(s):  
Yo Hiranoi ◽  
Koji Nakano
Keyword(s):  
Catalytic Activity ◽  
Cobalt Complex ◽  
Cobalt Complexes ◽  
High Catalytic Activity ◽  
Synthetic Method ◽  
Salen Complex ◽  
Salen Complexes ◽  
Mononuclear Cobalt ◽  
Cyclic Anhydrides ◽  
Alternating Copolymerization

The alternating copolymerization of epoxides with cyclic anhydrides (CAs) is a highly diverse synthetic method for polyesters as the polymers’ architectures and properties can be easily controlled depending on the combination of two monomers. Thus, a variety of catalyst designs has been reported to prepare the desired copolymers efficiently. We herein report dinuclear cobalt–salen complexes with a benzene ring as a linker and their activities in copolymerization reactions. The dinuclear cobalt complexes showed a higher catalytic activity for the copolymerization of propylene oxide with phthalic anhydride than the corresponding mononuclear cobalt–salen complex and achieved one of the highest turnover frequencies ever reported. A variety of epoxides and CAs were also found to be copolymerized successfully by the dinuclear cobalt complex with a high catalytic activity.

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