发明名称 |
PREPARATION OF ANHYDROUS NIOBIUM AND TANTALUM PENTAFLUORIDES |
摘要 |
A method of producing an anhydrous niobium or tantalum pentafluoride involvi ng reacting the corresponding pentoxide or oxyhalide with an excess of anhydrous hydrogen fluoride in the presence o f a sufficient dehydrating agent (e.g,, COCI2, SOC12 or SO~C12) to react with any water formed. Such a process is useful to produ ce a catalytically active anhydrous niobium or tantalum pentafluoride in essentially a single liquid phase reaction step.</ SDOAB>
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申请公布号 |
CA2088781(A1) |
申请公布日期 |
1992.02.16 |
申请号 |
CA19912088781 |
申请日期 |
1991.08.09 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
NAPPA, MARIO J. |
分类号 |
B01J27/12;C01B9/08;C01G1/06;C01G33/00;C01G35/02;C07B35/08;C07B37/00;C07B61/00;C07C17/087;C07C17/21;(IPC1-7):C01G33/00 |
主分类号 |
B01J27/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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