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公开(公告)号:US4479024A
公开(公告)日:1984-10-23
申请号:US500039
申请日:1983-06-01
CPC分类号: C07C2/867 , C07C2521/10 , C07C2523/02 , C07C2523/04
摘要: Toluene and formaldehyde produce styrene in a gas phase catalytic process using a basic hydroxide of Group I or II, at formaldehyde to toluene mole ratios of from 0.001 to 0.10.
摘要翻译: 甲苯和甲醛在气相催化方法中使用I或II族的碱性氢氧化物生产苯乙烯,甲醛与甲苯的摩尔比为0.001至0.10。
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公开(公告)号:US4145301A
公开(公告)日:1979-03-20
申请号:US737826
申请日:1976-11-01
申请人: Philippe M. Bruylants , Jose J. Fripiat , Luc W. Rodrigue , Georges M. Poncelet , Antonin A. Munaut
发明人: Philippe M. Bruylants , Jose J. Fripiat , Luc W. Rodrigue , Georges M. Poncelet , Antonin A. Munaut
CPC分类号: G11B5/70642 , C07C31/28 , G11B5/706 , H01F1/11 , H01F1/0009
摘要: This invention relates to a process for the preparation of magnetic oxides and possibly of at least one other metal. It relates also to new products consisting in mono- and polymetal magnetic oxides. According to the invention a glycerin complex of iron and possibly at least one other metal is first prepared and the complex is decomposed into a mono- or polymetal magnetic oxide by hydrolysis or pyrolysis, the possibly decomposed glycerin complex being subjected to a thermal treatment, such as annealing or pyrolysis in an atmosphere of an inert gas, such as nitrogen. The invention relates to magnetic oxides containing 0.2 to 3% by weight of carbon, said oxides preferably containing cobalt and possibly a rare earth element such as yttrium or europium.
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