Evans–Showell-type polyoxometalate-based metal–organic complexes with novel 3D structures constructed from flexible bis-pyrazine–bis-amide ligands and copper metals: syntheses, structures, and fluorescence and catalytic properties

2019 ◽  
Vol 48 (6) ◽  
pp. 2160-2169 ◽  
Author(s):  
Feng-Cai Li ◽  
Xi-Li Li ◽  
Li-Kun Tan ◽  
Jin-Tang Wang ◽  
Wei-Zhong Yao
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Catalytic Properties ◽  
3D Structures ◽  
Heterogeneous Catalytic ◽  
Amide Ligands ◽  
Oxidation Of Benzyl Alcohol ◽  
Organic Complexes ◽  
Metal Organic

Two 3D Evans–Showell-type POM-based copper–bis-pyrazine–bis-amide complexes show good heterogeneous catalytic activity for the oxidation of benzyl alcohol.

Syntheses, structures and catalytic properties of Evans–Showell-type polyoxometalate-based 3D metal–organic complexes constructed from the semi-rigid bis(pyridylformyl)piperazine ligand and transition metals

2019 ◽  
Vol 48 (17) ◽  
pp. 5831-5841
Author(s):  
Feng-Cai Li ◽  
Li-Kun Tan ◽  
Xi-Li Li ◽  
Hua-Jie Kong ◽  
Li-Ming Ge ◽  
...  
Keyword(s):  
Transition Metals ◽  
Benzyl Alcohol ◽  
Heterogeneous Catalysts ◽  
Catalytic Properties ◽  
Oxidation Of Benzyl Alcohol ◽  
Organic Complexes ◽  
Metal Organic

Two 3D Evans–Showell-type POM-based different transition metals–bis-pyrazine–bis-amide complexes act as heterogeneous catalysts for the oxidation of benzyl alcohol.

scholarly journals Synthesis of new Mn19 analogues and their structural, electrochemical and catalytic properties

2019 ◽  
Vol 48 (15) ◽  
pp. 4830-4836 ◽  
Author(s):  
Elodie Chevallot-Beroux ◽  
Ayuk M. Ako ◽  
Wolfgang Schmitt ◽  
Brendan Twamley ◽  
Joseph Moran ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Catalytic Properties ◽  
Structural Characterisation ◽  
Oxidation Of Benzyl Alcohol

We report the synthesis, structural characterisation, electrochemistry and catalytic activity in the selective oxidation of benzyl alcohol of new Mn19 and Mn18M analogues: [MnIII12MnII7(μ4-O)8(μ3-OCH3)2(μ3-Br)6(HLMe)12(MeOH)6]Br2 (2) and [MnIII12MnII6Sr(μ4-O8(μ3-Cl)8(HLMe)12(MeCN)6]Cl2 cluster (3), where H3LMe is 2,6-bis(hydroxymethyl)-p-cresol.

Oxidation of benzyl alcohol over metal organic frameworks M-BTC (M = Co, Cu, Fe)

2017 ◽  
Vol 41 (8) ◽  
pp. 2891-2894 ◽  
Author(s):  
Ling Peng ◽  
Shujie Wu ◽  
Xiaoyuan Yang ◽  
Jing Hu ◽  
Xiaoran Fu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Metal Organic Frameworks ◽  
High Catalytic Activity ◽  
Oxidation Of Benzyl Alcohol ◽  
Metal Organic

Co-BTC showed high catalytic activity and selectivity in the oxidation of benzyl alcohol with air as the oxidant.

Hydrogen peroxide decomposition on a two-component CuO-Cr2O3 catalyst

1988 ◽  
Vol 53 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Viliam Múčka ◽  
Kamil Lang
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Extreme Values ◽  
Catalytic Properties ◽  
Active Components ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Peroxide Decomposition ◽  
Two Component ◽  
Catalytically Active

Some physical and catalytic properties of the two-component copper(II)oxide-chromium(III)oxide catalyst with different content of both components were studied using the decomposition of the aqueous solution of hydrogen peroxide as a testing reaction. It has been found that along to both basic components, the system under study contains also the spinel structure CuCr2O4, chromate washable by water and hexavalent ions of chromium unwashable by water. The soluble chromate is catalytically active. During the first period of the reaction the equilibrium is being established in both homogeneous and heterogeneous catalytic systems. The catalytic activity as well as the specific surface area of the washed solid is a non-monotonous function of its composition. It seems highly probable that the extreme values of both these quantities are not connected with the detected admixtures in the catalytic system. The system under study is very insensitive with regard to the applied doses of gamma radiation. Its catalytic properties are changed rather significantly after the thermal treatment and particularly after the partial reduction to low degree by hydrogen. The observed changes of the catalytic activity of the system under study are very probably in connection with the changes of the valence state of the catalytically active components of the catalyst.

scholarly journals Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 641
Author(s):  
Lukasz Wolski ◽  
Grzegorz Nowaczyk ◽  
Stefan Jurga ◽  
Maria Ziolek
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Benzyl Alcohol ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Key Factor ◽  
Au Particle Size ◽  
Co Precipitation

The aim of the study was to establish the influence of a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth of nanostructures) on the properties and catalytic activity of as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with the use of XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, and tested in low-temperature oxidation of benzyl alcohol as a model oxidation reaction. The results obtained in this study indicated that the type of co-precipitation agent has a significant impact on the growth of gold species. Immediate co-precipitation of Au-CeO2 nanostructures with the use of NaOH allowed obtainment of considerably smaller and more homogeneous in size gold nanoparticles than those formed by gradual co-precipitation and growth of Au-CeO2 nanostructures in the presence of hexamethylenetetramine or urea. In the catalytic tests, it was established that the key factor promoting high activity in low-temperature oxidation of benzyl alcohol was size of gold nanoparticles. The highest conversion of the alcohol was observed for the catalyst containing the smallest Au particle size (i.e., Au-CeO2 nanocomposite prepared with the use of NaOH as a co-precipitation agent).

On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow

2014 ◽  
Vol 3 (1) ◽  
pp. 99-110 ◽  
Author(s):  
Hannes Alex ◽  
Norbert Steinfeldt ◽  
Klaus Jähnisch ◽  
Matthias Bauer ◽  
Sandra Hübner
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Aerobic Oxidation ◽  
X Ray ◽  
X Ray Scattering ◽  
Oxidation Of Benzyl Alcohol ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Selective Aerobic Oxidation

AbstractNanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We, herein, report on the selective aerobic oxidation of benzyl alcohol catalyzed by unsupported Pd/Au and Pd NPs at atmospheric pressure. NPs of varying compositions were synthesized and characterized by UV/Vis spectroscopy, transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS). The NPs were tested in the model reaction regarding their catalytic activity, stability, and recyclability in batch and continuous procedure. Additionally, in situ extended X-ray absorption fine structure (EXAFS) measurements were performed in order to get insight in the process during NP catalysis.

Selective oxidation of benzyl alcohol to benzaldehyde with H2O2 in water on epichlorohydrin-modified Fe3O4 microspheres

2015 ◽  
Vol 39 (6) ◽  
pp. 4924-4932 ◽  
Author(s):  
Shiwei Xiao ◽  
Chuntao Zhang ◽  
Rong Chen ◽  
Fengxi Chen
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Title Reaction ◽  
Enhancing Effect ◽  
Oxidation Of Benzyl Alcohol ◽  
Fe3o4 Microspheres

The enhancing effect of modification by epichlorohydrin on the catalytic activity of Fe3O4 microspheres in the title reaction was theoretically and experimentally confirmed.

Cerium‐Based Metal–Organic Frameworks with UiO Architecture for Visible Light‐Induced Aerobic Oxidation of Benzyl Alcohol

Solar RRL ◽  
2019 ◽  
Vol 4 (8) ◽  
pp. 1900449 ◽  
Author(s):  
Xueying Qiu ◽  
Yanfei Zhu ◽  
Xiaofei Zhang ◽  
Yin Zhang ◽  
Leta Takele Menisa ◽  
...  
Keyword(s):  
Visible Light ◽  
Benzyl Alcohol ◽  
Aerobic Oxidation ◽  
Metal Organic Frameworks ◽  
Oxidation Of Benzyl Alcohol ◽  
Metal Organic
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