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：US3867438A

公开(公告)日：1975-02-18

申请号：US38323273

申请日：1973-07-27

Applicant: DEGUSSA

Inventor： HENSEL JORG ,  LUSSLING THEODOR ,  NOLL EWALD ,  SCHAEFER HANS ,  WEIGERT WOLFGANG

IPC: B01J23/30 ,  B01J23/68 ,  B01J23/88 ,  B01J23/888 ,  B01J37/02 ,  C07C51/25 ,  C07C57/055 ,  C07C57/04 ,  C07C51/26

CPC classification number: B01J23/8885 ,  B01J23/30 ,  B01J23/687 ,  B01J37/0236 ,  C07C51/252 ,  C07C57/04

Abstract: Catalyst for the oxidation of an Alpha , Beta -unsaturated aldehyde to an Alpha , Beta -unsaturated carboxylic acid, said catalyst comprising (A) a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen, and (B) at least one oxide or oxygen containing compound of the elements lead, silver, copper, tin, titanium or bismuth, said catalyst having an atomic ratio of antimony to molybdenum to vanadium to tungsten to Group (B) elements of about 1 - 60 : 12 : 0.5 - 25 : 0.1 - 12 : 0.1 - 12. Processes for the use and preparation of the catalysts are provided.

Abstract translation: 用于将α，β-不饱和醛氧化成α，β-不饱和羧酸的催化剂，所述催化剂包含（A）元素锑，钼，钒和钨的氧化物和/或所述元素的化合物的混合物，和 氧，和（B）元素铅，银，铜，锡，钛或铋的至少一种氧化物或氧化物，所述催化剂具有锑与钼与钒的原子比与钒与钨的原子比与钨（B）元素的 约1：60：12：0.5 - 25：0.1 - 12：0.1 - 12。提供了使用和制备催化剂的方法。

公开(公告)号：US3867345A

公开(公告)日：1975-02-18

申请号：US29262872

申请日：1972-09-27

Applicant: DEGUSSA

Inventor： KOBERSTEIN EDGAR ,  LUESSLING THEODOR ,  NOLL EWALD ,  SCHAEFER HANS ,  WEIGERT WOLFGANG

IPC: B01J23/28 ,  B01J23/30 ,  C07C51/25 ,  C07C57/055 ,  C07C51/26 ,  C07C57/04

CPC classification number: B01J23/30 ,  B01J23/28 ,  C07C51/252 ,  C07C57/04

Abstract: Alpha , Beta -unsaturated aldehydes are oxidized to Alpha , Beta -unsaturated carboxylic acids by contacting the Alpha , Beta -unsaturated aldehyde with air or oxygen and steam at 200*350*C and at atmospheric or elevated pressure in the presence of a catalyst so as to convert the aldehyde to the corresponding carboxylic acid. The catalyst comprises a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen wherein the atomic ratio of the elements is as follows: 1 to 60 : 12 : 0.5 to 25 : 0.1 to 12. The catalyst is made by intimately mixing under agitation aqueous solutions or suspensions of the oxides or other compounds, for instance antimony oxide, ammonium molybdate, ammonium vanadate and ammonium tungstate, and possibly a carrier material and preferably bringing the mixture to boiling point, then separating the catalyst mass from the aqueous phase, drying it and calcining it at 225*-275*C, followed by heating in air for 15-60 minutes at 350*-475*C.

Abstract translation: α，β-不饱和醛被氧化成α，β-不饱和羧酸，通过使α，β-不饱和醛与空气或氧气和蒸汽在200-350℃和大气压或高压下在催化剂存在下接触 以将醛转化成相应的羧酸。 催化剂包括元素锑，钼，钒和钨的氧化物和/或所述元素和氧的化合物的混合物，其中元素的原子比如下：1至60：12：0.5至25：0.1至12 。

公开(公告)号：US3579562A

公开(公告)日：1971-05-18

申请号：US51464865

申请日：1965-12-17

Applicant: DEGUSSA

Inventor： WEIGERT WOLFGANG

IPC: C07C51/14 ,  C07C51/567 ,  C07C121/34 ,  C07C69/66

CPC classification number: C07C51/14 ,  C07C51/567 ,  C07C59/147 ,  C07C62/16

Abstract: METHACRYLIC ACID ESTERS AND NITRIEL ARE HYDROFORMYLATED IN THE PRESENCE OF A RHODIUM CATALYST. A-FORMYL PRODUCTS PREDOMINATE WHEN REACTING BELOW 100*C. AND B-FORMYL PRODUCTS PREDOMINATE WHEN REACTING ABOVE 100*C.

公开(公告)号：US3577416A

公开(公告)日：1971-05-04

申请号：US3577416D

申请日：1969-02-13

Applicant: DEGUSSA

Inventor： SCHWARZE WERNER ,  GIESSELMANN GUNTER ,  WEIGERT WOLFGANG

IPC: C07D55/48

Abstract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

公开(公告)号：US3544569A

公开(公告)日：1970-12-01

申请号：US3544569D

申请日：1968-07-05

Applicant: DEGUSSA

Inventor： SCHWARZE WERNER ,  WEIGERT WOLFGANG

IPC: C07D251/38 ,  C07D55/48

CPC classification number: C07D251/38