Oxidation of organic compounds

In this research, the nanosized Fe2V4O13 complex oxide material was synthesized by the hydrothermal method. Its structure, morphology characterization, and other properties were determined using X-ray, SEM, EDX, and DTA-TG methods.

5p vikwong 29-09-2024 2 1   Download

Volatile organic compounds (VOCs) are one of the environmental pollutants of concern because they contribute to polluted environmental phenomena such as photochemical smog and secondary particulate matter. The current research focuses on preparing the manganese oxide catalyst by many different methods and evaluating their activity in the toluene oxidation reaction.

6p vikwong 29-09-2024 2 1   Download

Toluene is a component of volatile organic compounds which need to be converted into non-poisonous one. Thus, we study the spinel-typed catalyst as NiCo2O4 for total oxidation of toluene because the advantage of spinel catalyst is multi- defective.

6p vikwong 29-09-2024 3 1   Download

This work investigated the modification of MnOx catalysts by doping various metals (e.g., Cu) and supporting them on cordierite honeycomb ceramics using the impregnation method. The catalysts were characterized by BET, XRD, SEM-EDX, and H2-TPR techniques. The Cu1Mn2Ox catalyst exhibited the best catalytic performance, achieving complete oxidation of benzene and toluene at 275°C with a WHSV of 18,000 mL/(g·h).

6p vikwong 29-09-2024 3 1   Download

Objective of the study: The general objective of this study is to produce catalysts of bimetallic oxides (Cu-Co), on porous materials (activated carbon, silica gel, MCM-41) to adsorb and oxidize VOCs, which is represented by toluene, a popular VOCs with particular properties of the BTEX group in many industrial factories, at low temperature.

144p armyofthedead 23-06-2021 20 2   Download

The main contents of the thesis: Synthesis and characterization of Fe3O4 nanoparticles, -Fe2O3 nanoparticles and γ-Fe2O3 nanoparticles by hydrothermal method. Compare the corrosion protection ability of epoxy film containing synthetic iron oxide particles. Fabrication and evaluation of steel corrosion protection effect of epoxy membrane containing magnetic iron oxide nanoparticles and nano iron oxide from organic denaturation with some silane compounds and with corrosion inhibiting compound.

26p xacxuoc4321 08-07-2019 34 6   Download

Recently, some of the furoquinoline alkaloids were found to have an interesting biological activity, for example, anti-cancer, antiplatelet aggregation and antifungal activities. The interesting biological activity made these compounds 1-13 attractive targets in organic chemistry. A novel generally applicable synthesis of furoquinolines is described. The condensation of 2- methoxy aniline and malonic acid in the presence of POCl3 gave 2,4-dichloro-8- methoxyquinoline. Then, treatment of this compound with sodium methoxide in methanol under reflux afforded 4,8-dimethoxyquinoline.

5p uocvong04 24-09-2015 68 5   Download

A nitroalkane-oxidizing enzyme gene (naoA) was cloned from a genomic DNA library ofStreptomyces ansochromo-genes7100. The deduced protein (NaoA) of this gene con-tains 363 amino acids and has high similarity to several nitroalkane-oxidizing enzymes from various micro-organ-isms.ThenaoAgenewas subcloned intoanexpressionvector pET23b and overexpressed inEscherichia coliBL21(DE3). The protein was then purified, and its characteristics were studied. Experimental results showed that NaoA can con-vert 1-nitropropane, 2-nitropropane and nitroethane into the corresponding carbonyl compounds....

6p tumor12 22-04-2013 44 2   Download

To investigate how solubility and steric issues affect the laccase-catalysedoxidationof phenols, a series of oligomeric polyphenol compounds, having increasing size and decreasing solubility in water, was incubated with laccase. The extent of substrate conversion, and the nature of the products formed in buffered aqueous solutions, were com-pared to those obtained in the presence of an organic cosolvent, and also in the presence of twomediating species, i.e. N-hydroxyphthalimide (HPI) and 2,2,6,6-tetramethyl-piperidin-1-yloxy (TEMPO). ...

6p tumor12 22-04-2013 41 2   Download

The physiological role of a bifunctional enzyme, 3,4-dihydrocoumarin hydrolase (DCH), which is capable of both hydrolysis of ester bonds and organic acid-assisted bromination of organic compounds, was investigated. Purified DCH fromAcinetobacter calcoaceticusF46 cata-lysed dose- and time-dependent degradation of peracetic acid. The gene (dch) was cloned from the chromosomal DNA of the bacterium.

9p tumor12 20-04-2013 37 3   Download

Catalytic oxidation of organic compounds is an extremely important field of chemistry, spanning the range from biological oxidations to large scale industrial production of commodity chemicals. However, many of these transformations can hardly be classified as organometallic reactions, since the catalysts (often simple metal salts) and the intermediates can be rather regarded as coordination complexes than organometallic compounds.

7p boyminsk 10-06-2010 103 18   Download