Phosphates represent diverse complex systems, whose basic structural unit is tetrahedron. They are widely applied as catalysts, carriers of catalytic active substances, adsorbents and ion exchangers. Phosphoric acid phosphates act catalyst for reactions alkylation, cracking, izomerization, polymerization, hydrogenation dehydrogenation. some metals promote oxidation normal alkanes with derivatio...

We have demonstrated a novel antioxidant action of ethanolamine plasmalogens both in protecting cholesterol from oxidation by free radicals and in lowering the oxidizability of membranes, along with the action of scavenging radicals, by the oxygen-uptake method using large unilamellar vesicles and the water-soluble azo-radical initiator, AAPH [2,2'-azobis-(2-amidino-propane) dihydrochloride].

Co3O4 catalysts were prepared via carbonate precipitation and subsequent calcination under specific conditions. The different characterized as received using several techniques tested in the total oxidation of toluene or propane. Calcination at low temperature dynamic conditions resulted with small crystallite sizes large surface areas. performances appeared to be closely related low-temperatur...

The polymer supported hypochlorite ion is a facile selective oxidizing agent for the oxidation of various alcohols to aldehydes and ketones. Similarly is successfully oxidizes various Hantzsch type 1,4- dihydropyridines to corresponding pyridines.

The deep ocean and its sediments are a continuous source of non-methane short-chain alkanes (SCAs) including ethane, propane, and butane. Their high global warming potential, and contribution to local carbon and sulfur budgets has drawn significant scientific attention. Importantly, microbes can use gaseous alkanes and oxidize them to CO2, thus acting as effective biofilters. A relative decreas...

Novel carbon adsorbents for propane/propylene separation, with an unprecedented adsorption selectivity to propane – the minority component were prepared from a phenolic resin precursor. The preparation conditions of molecular sieve adsorbents, such as pre-treatment phosphoric acid, carbonization and post-treatment propylene, carefully investigated concerning their role on separation performance...

The low-temperature oxidation of propane was investigated using a jet-stirred reactor at atmospheric pressure and two methods of analysis: gas chromatography and synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) with direct sampling through a molecular jet. The second method allowed the identification of products, such as molecules with hydroperoxy functions, which ar...

The catalytic performances in the oxidation of propane of the AgM@2014 catalyst are quite good, leading to 70% of propene selectivity at 7% of propane conversion. We have checked that, before reaction, results of XANES and EXAFS obtained at the MO K-edge (19999 eV) d r m those obtained by X-ray spectroscopy (oxidation state and MO number of oxygen neighbour of 5.66, Mo=O bond length=1.72A). Mer...

The International Agency for Research cancer (IARC) has classified nitrite in Group 2A of probable carcinogens to human. Herein, we report on the rapid and selective colorimetric detection using a chemically modified gold nanoparticle (AuNP)-cerium oxide (CeO2) NP-anchored graphene (GO) hybrid nanozyme catalytic assay where acts as main oxidant/target analyte 3,3?,5,5?-tetramethylbenzidine (TMB...