申请人:Martin Andreas
公开号:US20050176984A1
公开(公告)日:2005-08-11
The present invention relates to a method for preparing halogenated benzonitriles by vapor phase ammoxidation at a reaction temperature in the range of 300 to 500° C. in a fixed bed reactor using a three-component catalyst. More particularly, the method of the invention relates to a method for preparing 2,6-dichlorobenzonitrile (2,6-DCBN) from 2,6-dichlorotoluene (2,6-DCT) by vapor phase ammoxidation. The invention also relates to a three-component catalyst provided on a carrier and its use in a vapor phase ammoxidation reaction according to the invention. In addition, the invention provides a method for preparing the three-component catalyst.
本发明涉及一种使用三组份催化剂在固定床反应器中,在反应温度 300 至 500 摄氏度范围内,通过气相氨氧化法制备卤代苯腈的方法。更具体地说,本发明的方法涉及一种通过气相氨氧化法从 2,6-二氯甲苯(2,6-DCT)制备 2,6-二氯苯腈(2,6-DCBN)的方法。本发明还涉及一种提供在载体上的三组分催化剂及其在根据本发明进行的气相氨氧化反应中的用途。此外,本发明还提供了一种制备三组分催化剂的方法。