Platindioxid

Bezeichnung:Platindioxid

CAS-Nr1314-15-4

Englisch Name:Platinum dioxide

CBNumberCB1254558

SummenformelO2Pt

Molgewicht227.08

MOL-Datei1314-15-4.mol

Synonyma

Platindioxid

Platindioxid physikalisch-chemischer Eigenschaften

Schmelzpunkt	450 °C (lit.)
Dichte	10.2
RTECS-Nr.	TP2506020
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
Aggregatzustand	crystalline
Farbe	Dark brown
Wasserlöslichkeit	Soluble in caustic potash solution. Insoluble in water, acid, aquaregia.
Merck	14,7527
Stabilität	Contact with combustible material may cause fire. Incompatible with organic materials, powdered metals.
InChI	InChI=1S/2O.Pt
InChIKey	WNVYCMIJBVIKSY-UHFFFAOYSA-N
SMILES	[Pt](=O)=O
CAS Datenbank	1314-15-4(CAS DataBase Reference)
NIST chemische Informationen	Platinum dioxide(1314-15-4)
EPA chemische Informationen	Platinum oxide (PtO2) (1314-15-4)
Löslichkeit	THF, o-xylene, chloroform, chlorobenzene and dichlorobenzene

Sicherheit

Kennzeichnung gefährlicher	O,Xi
R-Sätze:	8-36-41-38-36/37/38
S-Sätze:	26-36/37/39-28A-22-17-36
RIDADR	UN 1479 5.1/PG 2
WGK Germany	2
TSCA	Yes
HazardClass	5.1
PackingGroup	II
HS Code	28439000

Gefahreninformationscode (GHS)

Platinum dioxide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R8:Feuergefahr bei Berührung mit brennbaren Stoffen.
R36:Reizt die Augen.
R41:Gefahr ernster Augenschäden.
R38:Reizt die Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S22:Staub nicht einatmen.
S17:Von brennbaren Stoffen fernhalten.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
Platinum dioxide, also known as Adams catalyst, is a dark brown powder, a hydrated form of platinum (IV) oxide (PtO2), produced by heating chloroplatinic acid (H2PtCl6) with sodium nitrate (NaNO3). Platinum nitrate is produced, and this decomposes to Platinum (IV) oxide with evolution of NO2 and oxygen. It is used in hydrogenations of alkenes to alkanes, nitro compounds to aminos, and ketones to alcohols. The actual catalyst is not the oxide but finely divided platinum black, which forms during the hydrogenation reaction.
Verwenden
As catalyst in hydrogenations. The actual catalyst is platinum black which is formed in situ by reduction of the PtO2 by the hydrogen used for the hydrogenation. Especially useful for reduction at room tempereture and hydrogen pressures up to 4 atmospheres. Suitable for the reduction of double and triple bonds, aromatic nuclei, carbonyl groups, nitro groups, and nitriles.
Verwenden
Platinum(IV) oxide is used as catalyst for hydrogenation reactions. It is applied in the hydrogenation of alkenes to alkanes, nitro compounds to amines and ketones to alcohols. It is also involved in the hydrogenolysis of cyclopropyl group in to an isopropyl group and in selective oxidation of primary alcohols.
Application
Platinum (IV) Oxide commonly referred to as Adam’s Catalyst is used frequently in organic synthesis reactions, mainly catalytic hydrogenation. The compound itself shows no cytotoxicity in cells of the pulmonary origin when compared to its PtCl4 counterpart. It has also been used as a catalyst in amperometric biosensors that are based on oxidase enzymes.
Vorbereitung Methode
PtO2 is obtained by reduction in chloroplatinic acid with formaldehyde or by fusing chloroplatinic acid with sodium nitrate.
Allgemeine Beschreibung
Platinum(IV) oxide has been used for the reduction of citernyl bromide to form (S)-3,7-dimethyloctylbromide. Prepared by Adams′ nitrate fusion method.

Platinum dioxide Upstream-Materialien And Downstream Produkte

Platindioxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1314-15-4, Platinum dioxide Verwandte Suche:

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