At the lowest pressure the growth rate of the (110) grains was much greater if they lay on stacking faults. Direct evidence was obtained for the influence of oxygen on the surface diffusion of copper.L.O. BrockwayAnne P. RoweFundamentals of Gas–Surface Interactions...
PHOTO-OXIDATION OF FORMIC ACID BY OXYGEN IN THE PRESENCE OF TITANIUM DIOXIDE AND DISSOLVED COPPER IONS: OXYGEN TRANSFER AND REACTION KINETICS Photocatalytic activity of TiO2 in the oxidation by oxygen of formic acid is considerably enhanced by the presence of dissolved copper ions. The role of ox...
This process of oxygen transfer proceeds via initially generated keto-carbenoids which react intramolecularly with the epoxide function to give bicyclic intermediates 10. Release of strain and subsequent ring opening produces but - 3 - ene - 1,2 - diones which acetalise to give the ultimate ...
Molecular oxygen was used in this transformation as an environmentally benign source of oxygen.关键词: 2-aroylquinolines oxygenation anilines acetaldehydes copper catalysis aerobic oxidation annulation DOI: 10.1055/s-0036-1588171 年份: 2017 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 ...
It has been reported that copper melted in a graphite crucible at high temperature will give off its oxygen content mainly as CO and partially as CO 2. Thus if oxygen in copper is determined by means of apparatus designed to measure only CO as the reaction product, the results are obviously...
The feasibility of switching from dehydrogenation to lactonization is also demonstrated by altering reaction conditions. The use of a readily available amide as both radical precursor and internal oxidant allows for the development of redox-neutral C–H functionalization reactions with methanol as the ...
Octa‐, Deca‐, Trideca‐, and Tetradecanuclear Heterometallic Cyclic Chromium–Copper Cages Ring around the amine: Reactions which give heterometallic CrxCuy rings can be controlled through choice of reaction times, and the m... Larry P.,Engelhardt,Christopher A.,... - 《Angewandte ...
Transition metal ascorbic acid reaction mechanism Three detailed mechanisms have been proposed to describe the oxidation process of ascorbic acid by iron and copper28,29,30,31. All of them begin with the oxidized form (Fe(III) or Cu(II)), consume oxygen, and produce A.−or DHA plus a ...
Copper foil, Oxygen-Free High Conductivity (OFHC), alloy 101 is used for automotive rectifiers, transistor component bases, high resistance-ratio cryogenic shunts, wave guides, hollow conductors, anodes for vacuum tubes, coaxial cable, coaxial tube, klystrons, microwave tubes, bus bars, lead-in ...
The cluster is stabilized by two anionic centres due to AlISP lattice sites at the entrance of the MOR side pocket (b) so that the extra-framework oxygens responsible for the initial C–H activation are pointing towards the main channel of MOR (a). The charge due to the remaining AlI...