Patent 2007296136

Process for recovering Group VI-B metals from spent catalysts

Abstract

Abstract: The invention relates to process forrecovering Group VIB metals from a catalyst, in particular a spent bulk catalyst, Comprising one or more Group VIB metals and one or more Group VIII metals. Further, the invention relates to a solid Group VIB metal compound obtainable by the process according to the invention having the general formula 112X0 4, wherein X = W1~yMoy, wherein y is between 0 and 1 and to its use in a process for the manufacture of a fresh catalyst. The process comprises the steps of: a) oxidizing the one or more Group VIB metals to one or more Group VIB metal oxides; b) separating the one or more Group VB metal oxides from the one or more Group VIII metals; c) dissolving the one or more Group VIB metal oxides in water to produce an aqueous solution of one or more Group VIB metal oxides; d) precipitating the one or more Group VIB metal oxides from the aqueous solution by adding alkaline earth metal (Group IHa) ions to the aqueous solution; e) optionally filtering and washing the precipitate; and f) transforming the precipitate by adding an acid to form a solid metal compound comprising one or more Group VIB metals.

Information

Australian application number
2007296136
Country
NL
Status
Lapsed
Type
Standard
Applicant
Albemarle Netherlands B.V., BV (NL)
Application year
2009

International Patent Classification (IPC) codes