Results 11 to 20 of about 111,400 (297)

Efficient aerobic oxidation of ethylbenzene accelerated by cu species in hydrotalcite

open access: yesCatalysis Communications, 2021
The simply prepared CuMgAl hydrotalcite (CuMgAl-LDH) has been developed as an efficient catalyst for the aerobic oxidation of ethylbenzene to acetophenone in the presence of N-Hydroxyphthalimide (NHPI).
Xuan Dai   +5 more
doaj   +1 more source

Light-Dependent Aerobic Methane Oxidation Reduces Methane Emissions from Seasonally Stratified Lakes. [PDF]

open access: yesPLoS ONE, 2015
Lakes are a natural source of methane to the atmosphere and contribute significantly to total emissions compared to the oceans. Controls on methane emissions from lake surfaces, particularly biotic processes within anoxic hypolimnia, are only partially ...
Kirsten Oswald   +6 more
doaj   +1 more source

Active Methanotrophs and Their Response to Temperature in Marine Environments: An Experimental Study

open access: yesJournal of Marine Science and Engineering, 2021
Aerobic methane (CH4) oxidation plays a significant role in marine CH4 consumption. Temperature changes resulting from, for example, global warming, have been suggested to be able to influence methanotrophic communities and their CH4 oxidation capacity ...
Jing Li   +6 more
doaj   +1 more source

Visible light-promoted enantioselective aerobic oxidation of pyrazolones by phase transfer catalysis

open access: yesGreen Synthesis and Catalysis, 2022
An efficient and enantioselective aerobic oxidation of 4-substituted pyrazolones has been developed by phase transfer catalysis. Using visible light as the driving force and O2 (in air) as the oxidant, broad scopes (38 examples) of pyrazolones bearing an
Yakun Wang   +8 more
doaj   +1 more source

Application of Iodine as a Catalyst in Aerobic Oxidations: A Sustainable Approach for Thiol Oxidations

open access: yesMolecules, 2023
Iodine is a well-known oxidant that is widely used in organic syntheses. Thiol oxidation by stoichiometric iodine is one of the most commonly employed strategies for the synthesis of valuable disulfides.
Lijun Wang   +9 more
doaj   +1 more source

Methane oxidation and emission in Lake Lugano (Southern Switzerland) : a lipid biomarker and isotopic approach [PDF]

open access: yes, 2015
Methane is an important greenhouse gas in Earth's atmosphere. The sources of atmospheric methane are largely biogenic, being produced under anoxic conditions by methanogenic Archaea.
Blees, Hendrik Jan Reynier
core   +1 more source

Effect of Addition of Tryptophan on Aggregation of Apo-α-Lactalbumin Induced by UV-Light

open access: yesFoods, 2021
UV-B illumination facilitates aggregation of alpha-lactalbumin (α-LA) by intramolecular disulfide bond cleavage followed by intermolecular thiol-disulfide exchange reactions. However, long term exposure to UV-B illumination may induce undesired oxidative
Zichen Zhao   +4 more
doaj   +1 more source

Aerobic Photocatalysis: Oxidation of Sulfides to Sulfoxides

open access: yesChemPlusChem, 2022
AbstractSulfoxides constitute one of the most important functional groups in organic chemistry found in numerous pharmaceuticals and natural products. Sulfoxides are usually obtained from the oxidation of the corresponding sulfides. Among various oxidants, oxygen or air are considered the greenest and most sustainable reagent.
Elpida Skolia   +2 more
openaire   +3 more sources

Aerobic Oxidation Reactivity of Well-Defined CoII and CoIII Aminophenol Complexes

open access: yes, 2021
This article describes the synthesis and reactivity studies of three cobalt complexes bearing aminophenol-derived ligands without nitrogen substitution: CoII(tBu2APH)2(tBu2AP)2 (1), Co2III(tBu2APH)2(tBu2AP)2(μ-tBu2BAP)2 (2), and CoIII(tBu2AP)3 (3 ...
Brian, Dolinar   +2 more
core   +1 more source

Vertical distribution of methane oxidation and methanotrophic response to elevated methane concentrations in stratified waters of the Arctic fjord Storfjorden (Svalbard, Norway) [PDF]

open access: yes, 2013
The bacterially mediated aerobic methane oxidation (MOx) is a key mechanism in controlling methane (CH₄) emissions from the world’s oceans to the atmosphere.
E. Helmke   +13 more
core   +1 more source

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