公开(公告)号：US3600441A

公开(公告)日：1971-08-17

申请号：US3600441D

申请日：1969-02-27

Applicant: DEGUSSA

Inventor： LUSSLING THEODOR ,  THEISSEN FERDINAND ,  WEIGERT WOLFGANG

IPC: C07C235/00 ,  C07C97/00

CPC classification number: C07C235/00

Abstract: OXAMIDE IS FORMED IN GOOD YIELDS UNDER ANHYDROUS CONDITIONS EMPLOYING (1) CYANOGEN, (2) A CARBOXYLIC ACID AND (3) A CARBOXYLIC ACID HALIDE OR HYDROGEN HALIDE. PREFERABLY SUPERATMOSPHERIC PRESSURE IS EMPLOYED.

公开(公告)号：US3887490A

公开(公告)日：1975-06-03

申请号：US38954373

申请日：1973-08-20

Applicant: DEGUSSA

Inventor： SCHREYER GERD ,  THEISSEN FERDINAND ,  WEIBERG OTTO ,  WEIGERT WOLFGANG

IPC: B01J23/96 ,  C01B15/023 ,  B01J11/18 ,  C01B15/02

CPC classification number: B01J23/96 ,  C01B15/023 ,  Y02P20/584

Abstract: In situ regeneration of noble metal catalysts for the synthesis of hydrogen peroxide by the anthraquinone process is provided by employing as the working solution coming from the extraction or desorption step and being introduced into the hydrogenation step a solution which contains at least 250 mg/liter of hydrogen peroxide, to thereby completely regenerate the noble metal catalyst by full capacity of the hydrogenation step.

Abstract translation: 通过使用来自提取或解吸步骤的工作溶液并将其引入氢化步骤中，提供了通过蒽醌法合成过氧化氢的贵金属催化剂的原位再生，所述溶液含有至少250mg / 过氧化氢，从而通过氢化步骤的全部容量完全再生贵金属催化剂。

公开(公告)号：US3870746A

公开(公告)日：1975-03-11

申请号：US21784372

申请日：1972-01-14

Applicant: DEGUSSA

Inventor： LUSSLING THEODOR ,  SCHREYER GERD ,  THEISSEN FERDINAND ,  WEIGERT WOLFGANG

IPC: C07C20060101 ,  C07C121/18 ,  C07C121/32

CPC classification number: C07C255/00 ,  Y10S203/03

Abstract: Pure acetonitrile is recovered from aqueous acetonitrile by extracting with an organic solvent which has little miscibility with water, boils higher than acetonitrile and does not form an azeotrope with acetonitrile. The portion of the extract boiling up to 76*C is distilled off. The remaining acetonitrile containing more difficulty volatile portion is freed from the residual water by addition of an entraining agent and recovering the pure acetonitrile by a fractional distillation.

Abstract translation: 通过用与水混溶性小的有机溶剂提取，从乙腈水溶液中回收纯乙腈，沸点高于乙腈，不与乙腈形成共沸物。 将沸腾至76℃的提取物部分蒸馏掉。 通过加入夹带剂将含有更难挥发性部分的剩余乙腈从残余水中除去，并通过分馏回收纯乙腈。

公开(公告)号：US3867422A

公开(公告)日：1975-02-18

申请号：US42273873

申请日：1973-12-07

Applicant: DEGUSSA

Inventor： HEIMBERGER WERNER ,  SCHMITT HERMANN ,  SCHREYER GERD ,  THEISSEN FERDINAND ,  WEIGERT WOLFGANG

IPC: C07C255/04 ,  C07C20060101 ,  C07C67/00 ,  C07C253/00 ,  C07C253/04 ,  C07C253/32 ,  C07C121/20 ,  C07C121/22

CPC classification number: C07C255/00

Abstract: Malonodinitrile produced from cyanogen halide and acetonitrile and containing fumarodinitrile as an impurity is purified and stabilized by recrystallizing from an aliphatic alcohol or dialkyl ether in the presence of benzonitrile.

Abstract translation: 由氰卤化物和乙腈生成的含有作为杂质的烟草腈的丙二腈是通过在苄腈存在下从脂族醇或二烷基醚中重结晶来纯化和稳定的。

公开(公告)号：US3687621A

公开(公告)日：1972-08-29

申请号：US3687621D

申请日：1970-05-15

Applicant: DEGUSSA

Inventor： GEIGER FRIEDHELM ,  LUSSLING THEODOR ,  THEISSEN FERDINAND ,  WEIGERT WOLFGANG

IPC: B01J21/00 ,  C01C3/00

CPC classification number: C01C3/003

Abstract: CYANOGEN IS PREPARED BY REACTING HYDROGEN CYANIDE AND CHLORINE IN THE PRESENCE OF A SURFACE ACTIVE CATALYST. THE PRODUCT STILL CONTAINING HYDROGEN CYANIDE IS TREATED WITH 1 TO 1.1 MOLE OF CHLORINE PER MOLE OF HYDROGEN CYANIDE REMAINING AT 195 TO 800* C. FOR 10 TO 0.01 SECOND AND IN THE PRESENCE OF THE SURFACE ACTIVE CATALYST, PREFERABLY ACTIVATED CARBON.