The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2017
Filed:
Jul. 03, 2015
Umicore Ag & Co. KG, Hanau-Wolfgang, DE;
Angelino Doppiu, Seligenstadt, DE;
Ralf Karch, Kleinostheim, DE;
Andreas Rivas-Nass, Bensheim, DE;
Eileen Woerner, Nidderau, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
The present invention relates to a process for preparing hydridocarbonyltris(triphenylphosphine)rhodium(I), RhH(CO)(PPh), also referred to hereinafter as 'Rh-hydrido.' An alcoholic suspension of triphenylphosphine is stirred with an Rh(III) chloride precursor at elevated temperature. The Rh(III) chloride precursor used may be rhodium(III) chloride hydrate RhCl*xHO or rhodium(III) chloride solution H[RhCl]*(HO). After cooling, alcoholic alkali metal hydroxide solution is added, and the mixture is stirred for a few hours. Finally, sparging is effected with CO gas and the Rh-hydrido formed is removed. Rh-hydrido can be prepared by this process on the industrial scale with high yields and at very good quality.