Copper chromite Struktur

Dichromkupfertetraoxid

Bezeichnung:Dichromkupfertetraoxid

CAS-Nr12018-10-9

Englisch Name:Copper chromite

CBNumberCB4172860

SummenformelCrCuH2O

Molgewicht133.56

MOL-Datei12018-10-9.mol

Synonyma

Dichromkupfertetraoxid

Dichromkupfertetraoxid physikalisch-chemischer Eigenschaften

Dichte	5.400
Dampfdruck	0-0.08Pa at 190-200℃
Löslichkeit	insoluble in H2O, dilute acid solutions
Aggregatzustand	Powder
Farbe	Brown to black
Wasserlöslichkeit	insoluble H2O, dilute acids, conc HCl [MER06]
InChI	InChI=1S/2Cr.Cu.4O
InChIKey	FULFYAFFAGNFJM-UHFFFAOYSA-N
SMILES	O([Cr]=O)[Cr]=O.O=[Cu]
EPA chemische Informationen	Chromium copper oxide (Cr2CuO4) (12018-10-9)

Sicherheit

Kennzeichnung gefährlicher	O,Xi
R-Sätze:	8-37-36/37/38-20/21
S-Sätze:	17-24/25-23
RIDADR	UN 1479 5.1/PG 2
WGK Germany	3
HS Code	28415000

Gefahreninformationscode (GHS)

Copper chromite Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R8:Feuergefahr bei Berührung mit brennbaren Stoffen.
R37:Reizt die Atmungsorgane.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21:Gesundheitsschädlich beim Einatmen und bei Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S17:Von brennbaren Stoffen fernhalten.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
Chemische Eigenschaften
copper chromite is a black, tetragonal powder that is insoluble in water. It is prepared by the heating to 400°C of copper(II) chromate(VI).
Physikalische Eigenschaften
Grayish-black tetragonal crystals; density 5.4 g/cm³. When heated to elevated temperatures (above 900°C) copper(II) chromite decomposes to cupric chromate(II), CuCrO₂ and chromium (VI) oxide, CrO₃. Copper(II) chromite is insoluble in water and dilute acids.
Verwenden
Copper chromite is used as a hydrogenation catalyst.
Application
Copper chromite is primarily used as a catalyst forhydrogenation reactions because of its ability to hydrogenate functional groupsin aliphatic and aromatic compounds selectively. Industrially, copper chromiteis used to reduce furfural to furfuryl alcohol and butyraldehyde to 1-butanol,partially reduce conjugated dienes to monoenes, and selectively reduce carbonylgroups in vegetable oils. This CuCr catalyst is studied for a variety ofcatalytic applications including converting the hydrogenolysis of cellulose.It is also used as a catalyst for combustion to help control burn rate and as alight-absorbing pigment.
synthetische
Copper(II) chromite is obtained by heating copper chromate, CuCrO₄ at 400°C. The Adkin catalyst, a mixture of copper oxide and copper chromite, is prepared by mixing aqueous solutions of copper nitrate, sodium dichromate and ammonium hydroxide; the orange precipitate of copper ammonium chromate formed is dried and then heated below 400°C.
Allgemeine Beschreibung
Copper chromite is a black powder and inorganic pigment thatadopts a spinel crystal structure. It can be made by the high-temperaturecalcination of copper(II) oxide and chromium(III) oxide or the thermaldecomposition of copper chromate, which evolves oxygen at higher temperaturesand decomposes to copper chromite.

Copper chromite Upstream-Materialien And Downstream Produkte

Dichromkupfertetraoxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

12018-10-9, Copper chromite Verwandte Suche:

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