Room temperature oxidation of alcohols with 1 atm dioxygen and air catalyzed by a novel three-dimensional microporous ruthenium(II,III) 4,4′,4″,4‴-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakisbenzoate tetrafluoroborate

2006 ◽  
Vol 7 (9) ◽  
pp. 673-677 ◽  
Author(s):  
Chika Nozaki Kato ◽  
Masato Ono ◽  
Tomonari Hino ◽  
Tetsushi Ohmura ◽  
Wasuke Mori
Keyword(s):  
Room Temperature ◽  
Three Dimensional ◽  
Temperature Oxidation ◽  
Oxidation Of Alcohols

ChemInform Abstract: An Efficient and Reusable Vanadium Based Catalytic System for Room Temperature Oxidation of Alcohols to Aldehydes and Ketones.

ChemInform ◽  
2015 ◽  
Vol 46 (7) ◽  
pp. no-no
Author(s):  
Gayatri Sarmah ◽  
Saitanya K. Bharadwaj ◽  
Anindita Dewan ◽  
Ankur Gogoi ◽  
Utpal Bora
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
Temperature Oxidation ◽  
Oxidation Of Alcohols ◽  
Aldehydes And Ketones

An efficient and reusable vanadium based catalytic system for room temperature oxidation of alcohols to aldehydes and ketones

2014 ◽  
Vol 55 (36) ◽  
pp. 5029-5032 ◽  
Author(s):  
Gayatri Sarmah ◽  
Saitanya K. Bharadwaj ◽  
Anindita Dewan ◽  
Ankur Gogoi ◽  
Utpal Bora
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
Temperature Oxidation ◽  
Oxidation Of Alcohols ◽  
Aldehydes And Ketones

Room-temperature catalytic oxidation of alcohols with the polyoxovanadate salt Cs5(V14As8O42Cl)

2016 ◽  
Vol 6 (9) ◽  
pp. 3208-3213 ◽  
Author(s):  
McKenzie L. Campbell ◽  
Dino Sulejmanovic ◽  
Jacqueline B. Schiller ◽  
Emily M. Turner ◽  
Shiou-Jyh Hwu ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Room Temperature ◽  
Secondary Alcohols ◽  
Temperature Oxidation ◽  
Oxidation Of Alcohols ◽  
Reduced Salt ◽  
Initial Results

Herein we present some initial results demonstrating the room temperature oxidation of secondary alcohols catalyzed by the reduced salt-inclusion polyoxometalate, Cs5(V14As8O42Cl).

scholarly journals Crystal structure of K[Hg(SCN)3] – a redetermination

2014 ◽  
Vol 70 (9) ◽  
pp. i46-i46 ◽  
Author(s):  
Matthias Weil ◽  
Thomas Häusler
Keyword(s):  
Crystal Structure ◽  
Room Temperature ◽  
Three Dimensional ◽  
Lattice Parameters ◽  
Bond Lengths ◽  
Dimensional Network ◽  
Anisotropic Displacement Parameters ◽  
Precision And Accuracy ◽  
Standard Deviations ◽  
Atomic Coordinates

The crystal structure of the room-temperature modification of K[Hg(SCN)3], potassium trithiocyanatomercurate(II), was redetermined based on modern CCD data. In comparison with the previous report [Zhdanov & Sanadze (1952).Zh. Fiz. Khim.26, 469–478], reliability factors, standard deviations of lattice parameters and atomic coordinates, as well as anisotropic displacement parameters, were revealed for all atoms. The higher precision and accuracy of the model is, for example, reflected by the Hg—S bond lengths of 2.3954 (11), 2.4481 (8) and 2.7653 (6) Å in comparison with values of 2.24, 2.43 and 2.77 Å. All atoms in the crystal structure are located on mirror planes. The Hg2+cation is surrounded by four S atoms in a seesaw shape [S—Hg—S angles range from 94.65 (2) to 154.06 (3)°]. The HgS4polyhedra share a common S atom, building up chains extending parallel to [010]. All S atoms of the resulting1∞[HgS2/1S2/2] chains are also part of SCN−anions that link these chains with the K+cations into a three-dimensional network. The K—N bond lengths of the distorted KN7polyhedra lie between 2.926 (2) and 3.051 (3) Å.

scholarly journals Graphene oxide prepared by a room temperature oxidation using a green mechanochemical method.

2021 ◽  
Vol 27 (S1) ◽  
pp. 726-728
Author(s):  
G. Tarango-Rivero ◽  
G. Herrera-Perez ◽  
C. Carreño-Gallardo ◽  
C.G. Garay-Reyes ◽  
I. Estrada-Guel ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Mechanochemical Method ◽  
Temperature Oxidation

scholarly journals The influence of high-temperature oxidation on the phase distribution of metal substrate in duplex stainless steel

2021 ◽  
Author(s):  
Minami Matsumoto ◽  
Ken Kimura ◽  
Natsuko Sugiura
Keyword(s):  
Stainless Steels ◽  
Room Temperature ◽  
Phase Distribution ◽  
High Strength ◽  
Metal Substrate ◽  
Temperature Oxidation ◽  
Good Corrosion Resistance ◽  
Mn Oxide ◽  
Typical Type ◽  
Compositional Changes

AbstractDuplex stainless steels (DSSs), which consist of ferrite and austenite phases, are widely used owing to their high strength and good corrosion resistance. However, the oxidation behavior of DSSs is extremely complicated because they have dual phases. In this study, changes in the scale and the metal substrate during oxidation were investigated. UNS S32101 (Fe-21.5%Cr–5%Mn–1.5%Ni–0.3%Mo–0.22%N), which is a typical type of DSS, was annealed at 1473 K for up to 36 ks in air. The microstructure of UNS S32101 consisted of austenite/ferrite phases, the ratio of which was 50:50 at room temperature. After oxidation, Cr, Mn-oxide formed predominantly. The metal substrate beneath the scale changed mostly to ferrite. In the same region, depletion of Mn and N concentrations resulted. The decrease in Mn was due to the formation of Cr, Mn-oxide. In addition, it was revealed that N content of the metal substrate decreased due to the formation of N2 gas along with the depletion of Mn. It was assumed that the decrease in Mn and N, which are austenite-stabilized elements, led to an increase in ferrite in the depletion area of Mn and N. From this result, it was expected that the compositional changes in the Mn/N depletion area were caused by the oxidation of steel.

scholarly journals Ab initiostructure determination of nanocrystals of organic pharmaceutical compounds by electron diffraction at room temperature using a Timepix quantum area direct electron detector

2016 ◽  
Vol 72 (2) ◽  
pp. 236-242 ◽  
Author(s):  
E. van Genderen ◽  
M. T. B. Clabbers ◽  
P. P. Das ◽  
A. Stewart ◽  
I. Nederlof ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Room Temperature ◽  
Dynamic Range ◽  
Signal To Noise Ratio ◽  
Three Dimensional ◽  
Direct Methods ◽  
Liquid Nitrogen Temperature ◽  
High Dynamic Range ◽  
Electron Diffraction Data ◽  
High Signal

Until recently, structure determination by transmission electron microscopy of beam-sensitive three-dimensional nanocrystals required electron diffraction tomography data collection at liquid-nitrogen temperature, in order to reduce radiation damage. Here it is shown that the novel Timepix detector combines a high dynamic range with a very high signal-to-noise ratio and single-electron sensitivity, enablingab initiophasing of beam-sensitive organic compounds. Low-dose electron diffraction data (∼0.013 e− Å−2 s−1) were collected at room temperature with the rotation method. It was ascertained that the data were of sufficient quality for structure solution using direct methods using software developed for X-ray crystallography (XDS,SHELX) and for electron crystallography (ADT3D/PETS,SIR2014).

Room temperature oxidation of chromium and nickel implanted iron, and bulk alloys

1983 ◽  
Vol 15 (1-4) ◽  
pp. 66-74 ◽  
Author(s):  
P.J. Osborne ◽  
P.J.K. Paterson ◽  
O. Spillecke
Keyword(s):  
Room Temperature ◽  
Temperature Oxidation ◽  
Bulk Alloys
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