公开(公告)号：US4341899A

公开(公告)日：1982-07-27

申请号：US118174

申请日：1980-02-04

申请人： Ross A. Kremer ,  Leopoldo C. Mansueto, Jr.

发明人： Ross A. Kremer ,  Leopoldo C. Mansueto, Jr.

IPC分类号： C07C69/78

CPC分类号： C07C69/78

摘要： This invention provides a selective dechlorination process that comprises contacting a vaporized mixture of methyl 2,5-dichlorobenzoate and hydrogen, in a molar ratio respectively of 1:3-4, optionally together with between about 1% and about 10% of methanol by weight of methyl 2,5-dichlorobenzoate with a nickel catalyst at a temperature between about 200.degree. C. and about 300.degree. C. and for a residence time of between about 2.0 seconds and about 5.0 seconds.

摘要翻译： 本发明提供一种选择性脱氯方法，其包括使摩尔比为1：3-4，任选地与约1％至约10％甲醇的摩尔比的2,5-二氯苯甲酸甲酯和氢气的蒸发混合物 的2,5-二氯苯甲酸甲酯与镍催化剂在约200℃至约300℃之间的温度下进行，停留时间为约2.0秒至约5.0秒。