Ograniczanie wyników
Czasopisma help
Lata help
Autorzy help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 148
first rewind previous Strona / 8 next fast forward last
Wyszukiwano:
w słowach kluczowych:  hydrogen peroxide
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Polish Journal of Chemistry
2006 Vol. 80, nr 8 1407-1414
EN Two novel silica-based organic-inorganic hybrid (interphase) Fe(III) catalysts have been successfully prepared by the flexible ligandmethod, characterized and applied to the efficient catalytic oxidation of various types of substrates using 30% H2O2 or tert-BuOOH under mild conditions. The catalysts[...]
2
100%
Przemysł Chemiczny
3
100%
Polish Journal of Chemistry
2001 Vol. 75, nr 9 1203-1208
EN ž-phth (phthalic acid dianion), having two isolated metal-binding groups, together with X ligand (X = CH3CO2 _, CF3 CO2 _ and Ph-CO2 _ ) formed dicobalt(II) complexes [Co2(II)(ž-phth)(ž-CH3CO2 _ )(bipy)2]ClO4 (1), [Co2(II)(ž-phth)(ž-CF3CO2 _ )(bipy)2]ClO4 (2) and [Co2(II)(ž-phth)(ž-Ph-CO2 _ )(bipy)2[...]
4
100%
Polish Journal of Chemistry
2002 Vol. 76 / nr 11 1527-1535
EN 2-Hydroxy-1-naphthaldehyde-2-aminothiazole (HNATS) and its copper complex [CuII-(HNATS)2] had been synthesized. The complex of [CuII-(HNATS)2] was used to mimic the active group of horseradish peroxidase (HRP). The catalytic characteristics of this HRP-like catalyst in the H2O2-phenol- 4-AAP redox c[...]
5
100%
Polish Journal of Chemistry
1999 Vol. 73, nr 11 1827-1836
EN Vanadium(V) cataluzes perborate oxidation of iodide ion in acidic solution, being 1.6 order with respect to the oxidant, first order in the catalyst, inhibited by H+ and displays Michaelis-menten kinetics on the reductant. in aqueous solution perborate generates hydrogen peroxide and the kinetic res[...]
6
100%
Polish Journal of Chemistry
EN Three NAPH (1,8-naphthalate dianion) bridged dicopper(II) complexes have been synthesized, namely [NAPHCu2(_-X)2_2H2O]_nH2O, X = OH- (1), OAc- (2) and Cl- (3). NAPH was found to have the ability to form a dinuclear core with _-X as additional ligand. Based on IR, elemental analysis and electronic sp[...]
7
100%
Archives of Metallurgy and Materials
EN Titania nanotube (TNT) arrays fabricated by anodizing of titanium foil in organic (ethylene glycol) and inorganic (phosphoric acid) electrolytes and thermally modified in argon revealed much improved properties to detect hydrogen peroxide. Horseradish peroxidase and acetate thionine co-absorbed by a[...]
8
100%
Physicochemical Problems of Mineral Processing
EN The mechanism and leaching kinetics of a molybdenite concentrate in a H2O2-H2SO4 system were studied. The experimental work was performed in a batch reactor equipped with a condenser, a mechanical agitator and a temperature control system. The effects of the temperature, H2O2 and H2SO4 concentration[...]
9
100%
Polish Journal of Chemical Technology
EN The soil contaminated with petroleum products must be excluded from the crops and treated to reclamation processes. Natural processes of decomposition of hydrocarbon compounds go very slow, so it is necessary to use bioaugumentation or stimulation in order to accelerate the return of the soil to hig[...]
10
100%
Polish Journal of Chemical Technology
EN In this paper, 2,5-furandicarboxylic acid (FDCA) was efficiently prepared by the direct oxidation of 5-hydroxymethylfurfural (5-HMF) using hydrogen peroxide (H2O2) in alkaline conditions without any catalysts. The effects of reaction parameters on the process were systematicall[...]
11
100%
Polish Journal of Chemical Technology
EN This work presents the studies on the oxidation of limonene with hydrogen peroxide and tert-butyl hydroperoxide (TBHP) in the presence of : TS-2, Ti-Beta, Ti-MCM-41 and Ti-MWW catalysts, at the autogenic pressure and atmospheric pressure. The examination were performed at the following conditions: t[...]
12
100%
Polish Journal of Chemical Technology
EN The course of epoxidation of sesame oil (SO) with performic acid formed „in situ” by the reaction of 30 wt% hydrogen peroxide and formic acid in the presence of sulfuric acid(VI) as a catalyst was studied. The most advantageous of the technological independent parameters of epoxidation are as follow[...]
13
100%
Central European Journal of Energetic Materials
2017 Vol. 14, no. 4 759--774
EN Mining explosives based on ammonium nitrate(V) are safe and effective, however, the risk of NOx fume production during blasting is still present. In 2013, a project to eliminate NOx fumes from blasting began and hydrogen peroxide was chosen to replace ammonium nitrate(V) as the oxidiser. Previous wo[...]
14
88%
Polish Journal of Chemistry
EN Oxidation of 1- and 2-substituted naphthalenes (1) with 30% hydrogen peroxide in the presence of poly(bis-1,2-diphenylene) diselenide (PPDS) has been investigated. Depending on the substrate used trans-2-carboxycinnamic acid (2), and its isomer, (1-oxo-1,3-dihydroisobenzofuran-1-yl)acetic acid (3) o[...]
15
88%
Physicochemical Problems of Mineral Processing
EN The leaching conditions of chalcopyrite (CuFeS2) concentrate in a hydrogen peroxide medium were investigated by studying the effects of its leaching parameters, such as stirring speed, temperature, hydrogen peroxide concentration and the particle size of the concentrate on Cu extraction. It was foun[...]
16
88%
Acta Chromatographica
2014 Vol. 26, no. 3 563--573
EN Pomegranates (Punica granatum) have been known for centuries for their healing properties. The phenolic components of pomegranate are believed to be responsible for their antioxidant activities, hence playing a major role in reducing oxidative stress-related disease, such as cardiovascular diseases,[...]
17
88%
Journal of KONES
EN The paper presents the main activities of the Institute of Aviation (IoA) in the field of chemical rocket propulsion. The relatively "fresh" research and development team performed many useful works within the last 5 years, starting from the strategy and ideas. Nowadays, the Space Technology Departm[...]
18
88%
Physicochemical Problems of Mineral Processing
EN The leaching behaviour of a sulphide gold-silver ore was investigated in terms of a relationship between gold and silver extractions and cyanide consumption. Ninity five Au % and 88.0% Ag extractions were obtained under the determined conditions of 24 h leaching duration, -74 μm particle size, 40% s[...]
19
88%
Journal of Ecological Engineering
2018 Vol. 19, nr 5 186--193
EN The paper presents the possibility of using the ozonation process in landfill leachate pretreatment. The study was conducted in three stages. In the first stage, the landfill leachate was subjected only to the ozone, with the dose varying from 10 mg/dm3 to 40 mg/dm3. As part of[...]
20
88%
Polish Journal of Chemical Technology
EN Catalase with the commercial catalase name Terminox Ultra is widely used in the textile industry in bleaching processes. This enzyme is used to catalyse the decomposition of residual hydrogen peroxide into oxygen and water. In this study catalase was kept for about 30 hours in water baths in a tempe[...]
first rewind previous Strona / 8 next fast forward last