This paper reviews the intrinsic properties of singlet oxygen, emphasising the physical aspects of its natural occurrences, production techniques, as well as chemical reactivity with organic fuels and contaminants. The review assembles critical scientific studies on the implications of singlet oxygen in ...
Oxygen-containing carbons are promising supports and metal-free catalysts for many reactions. However, distinguishing the role of various oxygen functional groups and quantifying and tuning each functionality is still difficult. Here we investigate the r
Scheme 21.Substitution reaction with different electrophiles. 2. Ring-opening reactions With aziridine, being highly strained, a three-membered saturatedheterocycleis susceptible to ring opening by various nitrogen, sulfur, oxygen, and carbonnucleophilesresulting in a variety of functionalized open chain ...
In summary, we propose that chemically inert elements such as He have a prevalent propensity to react with ionic compounds that have unequal numbers of cations and anions. The He atoms do not form any chemical bonds with the ions in the compounds. However, the insertion of He atoms will low...
Ovac1/Ovac2 formation on the surface would trigger further reactions of H2O adsorption and splitting,which refilled the oxygen vacancy and ensured the considerable stability of the PbO2 (110) surface.Multiple H2O dissociation pathways were proposed on PbO2 (110) with oxygen vacancy sites:the acid...
Infrared photon dissociation (IRPD) spectra of the NaSO4(-)(H2O)n clusters with up to five water molecules have been studied using quantum chemical calcula... J Tan,BB Zhang,J Song,... - 《Journal of Physical Chemistry A》 被引量: 7发表: 2014年 Application of molecular mechanics (MMX...
Oxidation of SO2 to ionic sulfate, confirmed by isotopic substitution, occurs in the presence of soot, water vapor, and oxygen. The presence of simulated solar radiation results in the formation of both ionic and covalent sulfate species. The substrate, whether it is carbon black, cab-o-sil,...
energy. The most reactive elements and compounds may ignite spontaneously or explosively. They generally burn in water as well as the oxygen in the air. Reactivity is dependent upontemperature. Increasing temperature increases the energy available for a chemical reaction, usually making it more likely...
ssystem of 1858. De Chancourtois plotted the atomic weights on the surface of a cylinder with a circumference of 16 units, corresponding to the approximate atomic weight of oxygen. The resulting helical curve brought closely related elements onto corresponding points above or below one another on ...
The moles of dissolved oxygen per mole of chromium present in the liquids have been determined for some compositions. 展开 关键词: direct energy conversion materials science inorganic, organic, physical and analytical chemistry calcium oxides chemical reactions chromium oxides lanthanum oxides mhd ...