-
公开(公告)号:US20130310607A1
公开(公告)日:2013-11-21
申请号:US13810985
申请日:2011-07-19
申请人: Wolfgang Hölderich , Verena Ritzerfeld , Bernhard Markus Ernst Russbüldt , Erhard Henning Fleischhauer , Werner Bonrath , Reinhard Karge , Jan Schütz
发明人: Wolfgang Hölderich , Verena Ritzerfeld , Bernhard Markus Ernst Russbüldt , Erhard Henning Fleischhauer , Werner Bonrath , Reinhard Karge , Jan Schütz
CPC分类号: B01J23/10 , B01J23/92 , B01J37/086 , C07C45/00 , C07C45/74 , Y02P20/584 , C07C49/203
摘要: Use of pure lanthanum oxide which is obtained by calcination of oxygen-containing lanthanum salts at temperatures of at least 700° C. as heterogeneous catalyst in the aldol condensation of citral and acetone to give pseudoionone, and process for the preparation of pseudoionone by aldol condensation of citral and acetone in the liquid phase using pure lanthanum oxide.
摘要翻译: 使用纯氧化镧,其通过在至少700℃的温度下煅烧含氧镧盐作为柠檬醛和丙酮的醛醇缩合产生假性离子的非均相催化剂获得,以及通过醛醇缩合制备假性离子的方法 柠檬醛和丙酮在液相中使用纯氧化镧。
-
公开(公告)号:US08921605B2
公开(公告)日:2014-12-30
申请号:US13810985
申请日:2011-07-19
申请人: Wolfgang Hölderich , Verena Ritzerfeld , Bernhard Markus Ernst Russbüldt , Erhard Henning Fleischhauer , Werner Bonrath , Reinhard Karge , Jan Schütz
发明人: Wolfgang Hölderich , Verena Ritzerfeld , Bernhard Markus Ernst Russbüldt , Erhard Henning Fleischhauer , Werner Bonrath , Reinhard Karge , Jan Schütz
CPC分类号: B01J23/10 , B01J23/92 , B01J37/086 , C07C45/00 , C07C45/74 , Y02P20/584 , C07C49/203
摘要: Use of pure lanthanum oxide which is obtained by calcination of oxygen-containing lanthanum salts at temperatures of at least 700° C. as heterogeneous catalyst in the aldol condensation of citral and acetone to give pseudoionone, and process for the preparation of pseudoionone by aldol condensation of citral and acetone in the liquid phase using pure lanthanum oxide.
摘要翻译: 使用纯氧化镧,其通过在至少700℃的温度下煅烧含氧镧盐作为柠檬醛和丙酮的醛醇缩合产生假性离子的非均相催化剂获得,以及通过醛醇缩合制备假性离子的方法 柠檬醛和丙酮在液相中使用纯氧化镧。
-
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%。
-
-