Rapid degradation of oxidation resistant nitrophenols by TAML activator and H2O2

2015 ◽  
Vol 5 (3) ◽  
pp. 1775-1782 ◽  
Author(s):  
Soumen Kundu ◽  
Arani Chanda ◽  
Jasper V. K. Thompson ◽  
George Diabes ◽  
Sushil K. Khetan ◽  
...  
Keyword(s):  
Resting State ◽  
Substrate Inhibition ◽  
Mechanistic Studies ◽  
Rapid Degradation ◽  
Reversible Binding ◽  
Oxidation Resistant

TAML and H2O2remove toxic nitrophenol pollutants producing innocuous minerals. Mechanistic studies reveal the substrate inhibition due to the reversible binding of nitrophenolate to iron(iii) of the TAML resting state.

Hydridosilylamido complexes of Ta and Mo isolobal with Berry's zirconocenes: syntheses, β-Si–H agostic interactions, catalytic hydrosilylation, and insight into mechanism

2016 ◽  
Vol 45 (6) ◽  
pp. 2554-2561 ◽  
Author(s):  
Nicolas A. McLeod ◽  
Lyudmila G. Kuzmina ◽  
Ilia Korobkov ◽  
Judith A. K. Howard ◽  
Georgii I. Nikonov
Keyword(s):  
Resting State ◽  
Mechanistic Studies ◽  
Catalytic Hydrosilylation ◽  
Insight Into

The β-SiH agostic complex (ArN)2Mo{η3-N(tBu)SiMe2–H}H is a pre-catalyst for hydrosilylation of carbonyls. Mechanistic studies revealed a non-hydride mechanism, with the benzoxy complex 8 being the resting state.

Mechanistic Studies on the Reversible Binding of Nitric Oxide to Metmyoglobin

2001 ◽  
Vol 123 (2) ◽  
pp. 285-293 ◽  
Author(s):  
Leroy E. Laverman ◽  
Alicja Wanat ◽  
Janusz Oszajca ◽  
Grazyna Stochel ◽  
Peter C. Ford ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Mechanistic Studies ◽  
Reversible Binding

From Resting State to the Steady State: Mechanistic Studies of Ene–Yne Metathesis Promoted by the Hoveyda Complex

2016 ◽  
Vol 138 (16) ◽  
pp. 5380-5391 ◽  
Author(s):  
Justin R. Griffiths ◽  
Jerome B. Keister ◽  
Steven T. Diver
Keyword(s):  
Steady State ◽  
Resting State ◽  
Mechanistic Studies

Electron Probe Analysis of Muscle

1982 ◽  
Vol 40 ◽  
pp. 398-401
Author(s):  
A. V. Somlyo ◽  
H. Shuman ◽  
A. P. Somlyo
Keyword(s):  
Skeletal Muscle ◽  
Smooth Muscle ◽  
Sarcoplasmic Reticulum ◽  
Resting State ◽  
Binding Sites ◽  
Electron Probe ◽  
Frog Skeletal Muscle ◽  
Electron Probe Analysis ◽  
Probe Analysis

Electron probe analysis of frozen dried cryosections of frog skeletal muscle, rabbit vascular smooth muscle and of isolated, hyperpermeab1 e rabbit cardiac myocytes has been used to determine the composition of the cytoplasm and organelles in the resting state as well as during contraction. The concentration of elements within the organelles reflects the permeabilities of the organelle membranes to the cytoplasmic ions as well as binding sites. The measurements of [Ca] in the sarcoplasmic reticulum (SR) and mitochondria at rest and during contraction, have direct bearing on their role as release and/or storage sites for Ca in situ.

Structural Imperfections in thin Oxide Films Formed on Some Fe- and Ni-Base Alloys

1970 ◽  
Vol 28 ◽  
pp. 510-511
Author(s):  
L. P. Lemaire ◽  
D. E. Fornwalt ◽  
F. S. Pettit ◽  
B. H. Kear
Keyword(s):  
Oxide Scale ◽  
Oxidation Process ◽  
Short Circuit ◽  
Protective Oxide ◽  
Protective Oxide Scale ◽  
Thin Oxide Films ◽  
Diffusion Paths ◽  
Oxidation Resistant ◽  
Structural Imperfections ◽  
Short Circuit Diffusion

Oxidation resistant alloys depend on the formation of a continuous layer of protective oxide scale during the oxidation process. The initial stages of oxidation of multi-component alloys can be quite complex, since numerous metal oxides can be formed. For oxidation resistance, the composition is adjusted so that selective oxidation occurs of that element whose oxide affords the most protection. Ideally, the protective oxide scale should be i) structurally perfect, so as to avoid short-circuit diffusion paths, and ii) strongly adherent to the alloy substrate, which minimizes spalling in response to thermal cycling. Small concentrations (∼ 0.1%) of certain reactive elements, such as yttrium, markedly improve the adherence of oxide scales in many alloy systems.

Morphologies of Nonadherent Al2O3 and Matching Substrate Surfaces

1972 ◽  
Vol 30 ◽  
pp. 524-525
Author(s):  
C. S. Giggins ◽  
J. K. Tien ◽  
B. H. Kear ◽  
F. S. Pettit
Keyword(s):  
Electron Microscopy ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Substrate Surface ◽  
Morphological Features ◽  
Thermally Induced ◽  
Oxide Spallation ◽  
Oxidation Resistant ◽  
Induced Stresses ◽  
Substrate Surfaces

The performance of most oxidation resistant alloys and coatings is markedly improved if the oxide scale strongly adheres to the substrate surface. Consequently, in order to develop alloys and coatings with improved oxidation resistance, it has become necessary to determine the conditions that lead to spallation of oxides from the surfaces of alloys. In what follows, the morphological features of nonadherent Al2O3, and the substrate surfaces from which the Al2O3 has spalled, are presented and related to oxide spallation.The Al2O3, scales were developed by oxidizing Fe-25Cr-4Al (w/o) and Ni-rich Ni3 (Al,Ta) alloys in air at 1200°C. These scales spalled from their substrates upon cooling as a result of thermally induced stresses. The scales and the alloy substrate surfaces were then examined by scanning and replication electron microscopy.The Al2O3, scales from the Fe-Cr-Al contained filamentary protrusions at the oxide-gas interface, Fig. 1(a). In addition, nodules of oxide have been developed such that cavities were formed between the oxide and the substrate, Fig. 1(a).

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