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1. (WO2009135665) RECOVERY OF RHENIUM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/135665    International Application No.:    PCT/EP2009/003242
Publication Date: 12.11.2009 International Filing Date: 06.05.2009
IPC:
C22B 7/00 (2006.01), C22B 11/00 (2006.01), C22B 3/16 (2006.01), C01G 47/00 (2006.01), C07F 13/00 (2006.01), C07F 15/00 (2006.01), C22B 61/00 (2006.01)
Applicants: SCIENTIFIC DESIGN COMPANY, INC. [US/US]; 49 industrial Avenue Little Ferry, NJ 07643-1901 (US) (For All Designated States Except US).
RIZKALLA, Nabil [US/US]; (US) (For US Only).
ROKICKI, Andrzej [AU/US]; (US) (For US Only)
Inventors: RIZKALLA, Nabil; (US).
ROKICKI, Andrzej; (US)
Agent: WESTENDORP, Michael O.; Westendorp Sommer Uhlandstr. 2 80336 Munich (DE)
Priority Data:
12/115,779 06.05.2008 US
Title (EN) RECOVERY OF RHENIUM
(FR) RÉCUPÉRATION DE RHÉNIUM
Abstract: front page image
(EN)The present invention relates to a method for recovering rhenium from an ethylene oxide catalyst containing rhenium and at least silver on a solid support, wherein at least a substantial portion of the rhenium present in the catalyst is extracted by intimate contact of the catalyst with one or more polar non-acidic organic solvents substantially free of water such that a rhenium-containing solution is formed containing the polar non-acidic organic solvent and extracted rhenium, the polar non-acidic organic solvent containing one or more oxygen, nitrogen, and/or halogen atoms in its molecular structure.
(FR)La présente invention porte sur un procédé pour la récupération de rhénium à partir d'un catalyseur d'oxyde d'éthylène contenant du rhénium et au moins de l'argent sur un support solide, au moins une partie importante du rhénium présent dans le catalyseur étant extraite par contact intime du catalyseur avec un ou plusieurs solvants organiques non acides polaires pratiquement exempts d'eau, de sorte qu'il est formé une solution contenant du rhénium contenant le solvant organique non acide polaire et le rhénium extrait, le solvant organique non acide polaire contenant un ou plusieurs atomes d'oxygène, d'azote et/ou d'halogène dans sa structure moléculaire.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)