发明名称 |
Purification of Group ivb metal halides |
摘要 |
This invention relates to an improved process for removing trace levels of Group IVb contaminants from a Group IVb metal tetrahalide of and particularly to a process for removing zirconium tetrachloride from titanium tetrachloride. The improvement resides in contacting a titanium tetrachloride feedstock containing trace impurities of zirconium tetrachloride or hafnium tetrachloride with a sufficient amount of titanium hydride to convert any zirconium tetrachloride or hafnium tetrachloride to a lower volatile compound. The resultant mixture is distilled and the titanium tetrachloride separated from the lower volatile zirconium or hafnium compounds. |
申请公布号 |
EP1329418(A3) |
申请公布日期 |
2003.12.17 |
申请号 |
EP20030000652 |
申请日期 |
2003.01.16 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
BOWEN, HEATHER REGINA;ROBERTS, DAVID ALLEN |
分类号 |
B01D3/14;B01D7/00;C01B9/00;C01B9/02;C01G23/02;(IPC1-7):C01B9/00;C01G25/04;C01G27/04 |
主分类号 |
B01D3/14 |
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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