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公开(公告)号:US06229018B1
公开(公告)日:2001-05-08
申请号:US09386951
申请日:1999-08-31
IPC分类号: C07D213803
CPC分类号: C07D213/803 , C07D213/80
摘要: A process for the preparation of nicotinic acid by the direct oxidation of &bgr;-picoline in the gas phase, wherein water and &bgr;-picoline are fed separately to the catalyst bed and the catalyst is based on a titanium dioxide support which has been prepared by the sulfate method and has a high specific surface area and a vanadium oxide content of from 5 to 50 %.
摘要翻译: 通过在气相中直接氧化β-甲基吡啶来制备烟酸的方法,其中将水和β-甲基吡啶分别加入到催化剂床中,催化剂基于二氧化钛载体,其由 硫酸盐法,比表面积高,氧化钒含量5〜50%。
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公开(公告)号:US08008530B2
公开(公告)日:2011-08-30
申请号:US12065563
申请日:2006-08-22
申请人: Hubert Redlingshöfer , Stephan Kretz , Caspar-Heinrich Finkeldei , Christoph Weckbecker , Wolfgang Böck , Klaus Huthmacher
发明人: Hubert Redlingshöfer , Stephan Kretz , Caspar-Heinrich Finkeldei , Christoph Weckbecker , Wolfgang Böck , Klaus Huthmacher
IPC分类号: C07C319/00
CPC分类号: C01B17/162 , C07C319/08 , C07C321/04
摘要: The present invention relates to a process for continuously preparing methyl mercaptan from hydrogen sulphide and methanol in a direct connection with the preparation of hydrogen sulphide.
摘要翻译: 本发明涉及一种从制备硫化氢直接连接硫化氢和甲醇连续制备甲硫醇的方法。
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公开(公告)号:US07604788B2
公开(公告)日:2009-10-20
申请号:US11976717
申请日:2007-10-26
CPC分类号: C01B17/168
摘要: The invention provides a process for the removal of polysulfanes from gas streams formed during H2S synthesis.
摘要翻译: 本发明提供从H2S合成过程中形成的气流中除去多硫烷的方法。
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公开(公告)号:US07326393B2
公开(公告)日:2008-02-05
申请号:US10529148
申请日:2003-08-26
IPC分类号: C01B12/20
CPC分类号: C01B17/167 , C01B17/168
摘要: The invention provides a process for the removal of polysulfanes from gas streams formed during H2S synthesis.
摘要翻译: 本发明提供了一种从H 2 S合成期间形成的气流中除去多硫烷的方法。
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5.
公开(公告)号:US07199270B2
公开(公告)日:2007-04-03
申请号:US11016130
申请日:2004-12-17
申请人: Alexander Möller , Wolfgang Böck , Stephan Rautenberg , Hans-Joachim Hasselbach , Wolfgang Taugner , Harald Heinzel , Theo Zarfl
发明人: Alexander Möller , Wolfgang Böck , Stephan Rautenberg , Hans-Joachim Hasselbach , Wolfgang Taugner , Harald Heinzel , Theo Zarfl
IPC分类号: C07C319/00
CPC分类号: C07C319/08 , C07C319/18 , C07C319/28 , C07C321/04 , C07C323/22
摘要: The invention relates to a method for the separation of methyl mercaptan from reaction gas mixtures obtained by means of the catalytic conversion of H2S with methanol, by means of converting the methyl mercaptan into MMP in the presence of the byproducts with acrolein, and separating the same.
摘要翻译: 本发明涉及通过在丙烯醛的副产物存在下将甲硫醇转化为MMP,将甲硫醇与通过H 2 S与甲醇的催化转化得到的反应气体混合物分离的方法, 。
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