Copper suboxide

Synonyms cuprous oxide copper suboxide copper oxide red ide copper hemioxide... 

In situ techniques have allowed simultaneous measurement of catalytic and spectroscopic data (463, 468), estabhshing the morphology and electronic structure of the working catalyst under dynamic conditions. Copper suboxide was found to be the catalytically active phase, which represents a metastable state in UHV or under ambient conditions. This result suggests that the structure of the catalyst under reaction conditions can be significantly different from that determined after reaction or under ex situ conditions. 

Copper suboxide, Cu40.—The olive-green precipitate produced by the interaction of solutions of potassium stannite and cupric sulphate 4 appears not to be the suboxide or quadrantoxide, Cu40, but a mixture of cuprous oxide and copper.5... 

Claims have also been made for the conversion of hydrocarbons in the gaseous phase into other compounds by passage over a copper suboxide at temperatures ranging from 250° to 800° C.88 No information is available in the general technical literature regarding conversions or yields obtainable by processes similar to those disclosed in the patent literature. 

Cuprous oxide 4094 Cu2 Cuprite dioxide of copoer red copper ore red oxide of copper suboxide of copper. 

Copper(I) oxide (KOPP-er one OK-side) is also known as cuprous oxide, red copper oxide, copper protoxide, copper hemi-oxide, and copper suboxide. It is a yellowish, red, or brown crystalline substance, depending on its method of preparation. It does not burn and is stable in dry air. In moist air, it slowly changes to copper(II) oxide (CuO). The compound has been used by humans for thousands of years, first as a pigment in glazes, and later in fungicides, electronic components, and industrial reactions. 

Synonyms Brown copper oxide Cl 77402 Copper (I) oxide Copper oxide, red Copper oxide, yellow Copper protoxide Copper suboxide Cuprous oxide Cuprous oxide, red Cuprous oxide, yellow Dicopper monoxide Red copper oxide Red cuprous oxide Yellow copper oxide Yellow cuprocide Empirical CUjQ... 

Copper protoxide Copper suboxide Cuprous oxide Cuprous oxide, red Cuprous oxide, yellow... 

Copper sodium chlorophyllin. See Chlorophyllin-copper complex Copper suboxide. See Copper oxide (ous) Copper subsulfate. See Copper sulfate, tribasic Copper sulfate Copper (II) sulfate. See Cupric sulfate anhydrous... 

Synonyms cuprous oxide red copper oxide brown copper oxide C.I. 77402 Perenex yellow cuprocide Copper-Sandoz Caocobre cuprite copper oxide Copox copper hemioxide Copper Nordox copper protoxide copper suboxide cuprocide gicopper monoxide dicopper oxide Fungi-rhap CU-75 Fungimar Kuprite Nordox Nordox SD-45 Oleo Nordox Oleo Nordox Perecot Oleocuivre Perecot Perenox... 

In addition to the above oxides M2O, M2O2, M4O6, MO2 and MO3 in which the alkali metal has the constant oxidation state 4-1, rubidium and caesium also form suboxides in which the formal oxidation state of the metal is considerably lower. Some of these intriguing compounds have been known since the turn of the century but only recently have their structures been elucidated by single crystal X-ray analysis. Partial oxidation of Rb at low temperatures gives RbeO which decomposes above —7.3°C to give copper-coloured metallic crystals of Rb902 ... 

Suboxides Rb60 Bronze color dec. 266 K Rb902 Copper color mp 313 K Cs30 Blue green dec. 439 K Cs40 Red-violet dec. 284 K... 

At 293 K, the color of the sample still remains red-brown in O2, but then it turns to olive-green-grey at 373 K. Since Aqjj(3610) seems to be intact in Figure 2 to 373 K, thus the olive green (or dark green) color may refer to some kind of nonionic oxides above, or suboxide like CU4O [12] (if at all), which may form prior to the real oxides as CU2O and CuO. In subsequent steps, these intermediates react with zeolite protons, so that ionic copper forms or/and the formation of an 0-H bond is accompanied by the rupture of 0-0 bond ... 

An older process, now abandoned, possesses interest from a theoretical standpoint. In this case no chlorine compound was used, the mixture consisting of dimethylaniline, copper sulphate, acetic acid, and sand. The violet is precipitated from the solution of the melt as sulphate by sodium sulphate. The absence of chlorine prevents the formation of the insoluble double chloride, and the reduced copper compound is got rid of as insoluble suboxide. 

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