发明名称 |
PROCESS FOR RECOVERING GROUP VI-B METALS FROM SPENT CATALYSTS |
摘要 |
The invention relates to a process for recovering 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 H 2 XO 4 , wherein X = W 1-y Mo y , 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; separating the one or more Group VIB metal oxides from the one or more Group VIII metals; 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 IIa) 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. |
申请公布号 |
EP2064358(A1) |
申请公布日期 |
2009.06.03 |
申请号 |
EP20070803502 |
申请日期 |
2007.09.14 |
申请人 |
ALBEMARLE NETHERLANDS BV |
发明人 |
SITTERS, JOHANNES CORNELIS;FREE, HARMANNUS WILLEM HOMAN;OOGJEN, BOB GERARDUS |
分类号 |
C22B34/34;C22B1/02;C22B7/00;C22B23/00;C22B34/36 |
主分类号 |
C22B34/34 |
代理机构 |
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代理人 |
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地址 |
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