公开(公告)号：US5892092A

公开(公告)日：1999-04-06

申请号：US144478

申请日：1998-08-31

申请人： Andreas Kramer ,  Wolfgang Siegel ,  Michael Henningsen ,  Georg Heinrich Grosch

发明人： Andreas Kramer ,  Wolfgang Siegel ,  Michael Henningsen ,  Georg Heinrich Grosch

IPC分类号： B01J23/02 ,  C07B61/00 ,  C07C253/00 ,  C07C255/06 ,  C07C255/07 ,  C07C255/31

CPC分类号： C07C253/00

摘要： A process for preparing unsaturated nitriles of the formula I ##STR1## where R, R.sup.1 and R.sup.2 are each independently of one another alkyl or alkenyl each having 1-20 carbon atoms or cycloalkyl or cycloalkenyl each having 3-12 carbon atoms and any two of the radicals R, R.sup.1 and R.sup.2 may be part of a saturated or unsaturated ring and R.sup.1 and R.sup.2 may also be hydrogen and n is 0 or 1-20, by dehydration of oximes of the formula II ##STR2## where R, R.sup.1, R.sup.2 and n are as defined above, comprises dehydrating in the gas or liquid phase at from 150.degree. to 300.degree. C. over a heterogeneous catalyst consisting of an oxidic, carbidic or nitridic support doped with basic oxides and/or hydroxides or compounds which are converted into said oxides or hydroxides under the reaction conditions, or of said basic oxides.

摘要翻译： 制备式I的不饱和腈的方法，其中R，R 1和R 2各自独立地为各自具有1-20个碳原子的烷基或链烯基或各自具有3-12个碳原子的环烷基或环烯基，任何两个 的基团R 1，R 2和R 2可以是饱和或不饱和环的一部分，R 1和R 2也可以是氢，n是0或1-20，通过式II的肟脱水，其中R，R 1 R2和n如上定义，包括在气相或液相中在150-300℃下脱水，所述非均相催化剂由掺有碱性氧化物和/或氢氧化物或化合物的氧化，碳化或氮化载体组成， 在反应条件下或所述碱性氧化物中转化为所述氧化物或氢氧化物。