-
1.发明授权
公开(公告)号：US4714689A
公开(公告)日：1987-12-22
申请号：US894581
申请日：1986-08-07
IPC分类号： B01J23/90 , B01J23/96 , B01J38/12 , C07C67/00 , C07C209/00 , C07C209/36 , C07C211/46 , B01J23/94 , B01J38/16
CPC分类号： B01J38/12 , B01J23/90 , C07C209/36 , Y02P20/584
摘要： Catalysts for the gas-phase reduction of aromatic nitro compounds to aromatic amines are regenerated by treatment of the catalyst, at elevated temperature, with a gas mixture which contains oxygen, inorganic and/or organic amines and/or nitrogen oxides and, where appropiate, steam.
摘要翻译： 用于将芳族硝基化合物气相还原成芳族胺的催化剂通过在升高的温度下用含有氧，无机和/或有机胺和/或氮氧化物的气体混合物处理催化剂再生， 蒸汽。
-
公开(公告)号：US5599965A
公开(公告)日：1997-02-04
申请号：US279328
申请日：1994-07-22
CPC分类号： C07C68/005
摘要： C.sub.1 -C.sub.4 -Dialkyl carbonates can be obtained from the corresponding C.sub.1 -C.sub.4 -alkanols, carbon monoxide and oxygen by reacting these substances in the presence of Cu salts, the water of reaction being limited to less than 10 wt % in the reaction mixture by at least partial withdrawal.
摘要翻译： C 1 -C 4 - 碳酸二烷基酯可以通过在Cu盐存在下使这些物质反应从相应的C 1 -C 4 - 链烷醇，一氧化碳和氧中获得，反应的水在反应混合物中被限制在小于10重量％ 至少部分撤回。
-
公开(公告)号：US5649322A
公开(公告)日：1997-07-15
申请号：US571625
申请日：1995-12-11
IPC分类号： C07C201/04 , C07C203/00 , C07C203/02
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.4 -Alkyl nitrites can be prepared by reaction of C.sub.1 -C.sub.4 -alkanols with nitrogen oxides with the participation of oxygen in a reactor designed as a scrubber column, nitrogen oxides having a proportion of more than 50% of NO of the total amount of gram atoms of N of the nitrogen oxides, oxygen and optionally inert gas being fed into the lower part of the reactor. 5 to 60% of the total amount of C.sub.1 -C.sub.4 -alkanol used is likewise fed into the lower part of the reactor in vaporous or atomized form, while the remaining C.sub.1 -C.sub.4 -alkanol is delivered to the column head.
摘要翻译： C1-C4烷基亚硝酸盐可以通过在设计为洗涤塔的反应器中将C1-C4-链烷醇与氮氧化物反应而制备，氧化反应设计为总量超过NO的50％ 的氮原子的氮原子的克原子，氧和任选的惰性气体被供给到反应器的下部。 使用的C 1 -C 4烷醇的总量的5-60％同样以蒸气或雾化的形式进料到反应器的下部，而剩余的C1-C4-链烷醇被输送到塔头。
-
公开(公告)号：US5523452A
公开(公告)日：1996-06-04
申请号：US358133
申请日：1994-12-16
申请人： Zoltan Kricsfalussy , Heinrich Steude , Helmut Waldmann , Kaspar Hallenberger , Wolfram Wagner , Hans-Joachim Traenckner
发明人： Zoltan Kricsfalussy , Heinrich Steude , Helmut Waldmann , Kaspar Hallenberger , Wolfram Wagner , Hans-Joachim Traenckner
IPC分类号： B01J27/122 , C07B61/00 , C07C68/00 , C07C69/96
CPC分类号： C07C68/005
摘要： The preparation of dimethyl carbonate by reaction of methanol, carbon monoxide and oxygen in the presence of Cu compounds is carried out in distillation units and the water of reaction is removed at least partially from the stripping region or the bottom phase.
摘要翻译： 在Cu化合物的存在下，通过甲醇，一氧化碳和氧气的反应制备碳酸二甲酯，在蒸馏单元中进行，反应水至少部分地从汽提区域或底部相去除。
-
公开(公告)号：US5504260A
公开(公告)日：1996-04-02
申请号：US303970
申请日：1994-09-09
IPC分类号： C07D201/02 , B01J23/89 , C07B33/00 , C07B41/00 , C07B61/00 , C07C27/00 , C07C37/58 , C07C37/60 , C07C39/04 , C07C39/06 , C07C39/08 , C07C249/04 , C07D201/06 , C07D301/08 , C07D311/02 , C07D313/04 , C07D315/00
CPC分类号： C07D315/00 , C07B33/00 , C07B41/00 , C07C249/04 , C07C37/58 , C07D201/06 , C07D301/08 , Y02P20/52
摘要： Organic compounds are selectively oxidized by means of a particularly advantageous process, using elemental oxygen and a catalyst containing palladium and copper and carrying out the process in the presence of carbon monoxide.
摘要翻译： 通过特别有利的方法，使用元素氧和含有钯和铜的催化剂并在一氧化碳存在下进行有机化合物的选择性氧化。
-
公开(公告)号：US5476959A
公开(公告)日：1995-12-19
申请号：US272164
申请日：1994-07-08
申请人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
发明人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
CPC分类号： C07C68/00
摘要： Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites in a continuous gas phase reaction in the presence of a heterogeneous platinum metal catalyst, the activity of this catalyst being maintained by the addition of small amounts of halogen. The dialkyl carbonates are thus formed with almost quantitative selectivity and no deactivation of the catalyst occurs.
摘要翻译： 碳酸二烷基酯可以通过在多相铂金属催化剂的存在下在连续气相反应中使一氧化碳与亚硝酸烷基酯反应制备，该催化剂的活性通过加入少量的卤素来维持。 因此，碳酸二烷基酯以几乎定量的选择性形成，并且不会发生催化剂失活。
-
公开(公告)号：US5235026A
公开(公告)日：1993-08-10
申请号：US891506
申请日：1992-05-29
申请人： Claus Wulff , Hermann Kauth , Gunther Weymans , Zoltan Kricsfalussy , Wolfgang Alewelt , Jurgen Heuser
发明人： Claus Wulff , Hermann Kauth , Gunther Weymans , Zoltan Kricsfalussy , Wolfgang Alewelt , Jurgen Heuser
CPC分类号： C08G64/24
摘要： An improvement to the continuous process for the production of polycarbonates by interphase polycondensation is described. Accordingly, the organic phase and the aqueous phase are combined in a tube, forming chlorocarbonic acid ester and further alkali hydroxide is added at, or shortly after, the maximum concentration of said ester is reached. The resulting emulsion is then changed to an oil-in-water emulsion which is then separated and worked up in known manner.
摘要翻译： 描述了通过相间缩聚生产聚碳酸酯的连续方法的改进。 因此，将有机相和水相合并在管中，形成氯碳酸酯，并且在达到所述酯的最大浓度后或之后不久加入另外的碱金属氢氧化物。 然后将所得乳液变成水包油乳液，然后将其以已知方式分离和处理。
-
公开(公告)号：US5233072A
公开(公告)日：1993-08-03
申请号：US976627
申请日：1992-11-16
申请人： Zoltan Kricsfalussy , Helmut Waldmann , Hans-Joachim Traenckner , Marko Zlokarnik , Reinhard Schomacker
发明人： Zoltan Kricsfalussy , Helmut Waldmann , Hans-Joachim Traenckner , Marko Zlokarnik , Reinhard Schomacker
CPC分类号： C07C68/005
摘要： To prepare C.sub.1 -C.sub.4 -dialkyl carbonates, C.sub.1 -C.sub.4 -alkanols are reacted with CO and O.sub.2 at a relatively high temperature in a salt melt containing Cu salts.
摘要翻译： 为了制备C1-C4二烷基碳酸酯，C1-C4-链烷醇在含有Cu盐的盐熔体中在相当高的温度下与CO和O 2反应。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.01 秒)
