Adams' catalyst

Adams' catalyst
Names
	IUPAC name Platinum(IV) oxide
	Other names platinum dioxide, platinic oxide
Identifiers
CAS Number	1314-15-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	306130 ;
ECHA InfoCard	100.013.840
PubChem CID	345198;
UNII	9U12312Y2C ;
CompTox Dashboard (EPA)	DTXSID40904275 ;
	InChI InChI=1S/2O.Pt Key: YKIOKAURTKXMSB-UHFFFAOYSA-N ; InChI=1/2O.Pt/rO2Pt/c1-3-2 Key: YKIOKAURTKXMSB-FVLSDXBIAR;
	SMILES O=[Pt]=O;
Properties
Chemical formula	PtO2
Molar mass	227.08 g/mol
Appearance	black solid
Density	10.2 g/cm3
Melting point	450 °C (842 °F; 723 K)
Solubility in water	insoluble
Solubility	insoluble in alcohol, acid, aqua regia ; soluble in caustic potash solution
Magnetic susceptibility (χ)	−37.70·10−6 cm3/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H271
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Adams' catalyst, also known as platinum dioxide, is usually represented as platinum(IV) oxide hydrate, PtO₂•H₂O. It is a catalyst for hydrogenation and hydrogenolysis in organic synthesis.^[1] This dark brown powder is commercially available. The oxide itself is not an active catalyst, but it becomes active after exposure to hydrogen whereupon it converts to platinum black, which is responsible for reactions.

^ Nishimura, Shigeo (2001). Handbook of Heterogeneous Catalytic Hydrogenation for Organic Synthesis (1st ed.). New York: Wiley-Interscience. pp. 30, 32, 64–137, 170–225, 315–386, & 572–663. ISBN 9780471396987.

[1] Nishimura, Shigeo (2001). Handbook of Heterogeneous Catalytic Hydrogenation for Organic Synthesis (1st ed.). New York: Wiley-Interscience. pp. 30, 32, 64–137, 170–225, 315–386, & 572–663. ISBN 9780471396987.

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