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    Process for the production of benzaldehyde by the catalytic liquid phase air oxidation of toluene
    3.
    发明公开
    Process for the production of benzaldehyde by the catalytic liquid phase air oxidation of toluene 有权
    一种用于通过甲苯的催化空气氧化在液相中制备苯甲醛处理

    公开(公告)号：EP1088810A1

    公开(公告)日：2001-04-04

    申请号：EP99307767.6

    申请日：1999-10-01

    申请人： Council of Scientific and Industrial Research

    发明人： Kantam, Mannepalli Lakshmi ,  Choudary, Boyapati Manoranjan ,  Sreekanth, Pentlavally ,  Rao, Kottapalli Koteswara ,  Naik, Kantarao ,  Kumar, Thella Prathap ,  Khan, Asad Ali

    IPC分类号： C07C45/36 ,  C07C47/54

    CPC分类号： C07C45/36 ,  C07C51/265 ,  C07C47/54 ,  C07C63/06

    摘要： The present invention relates to an improved process for the production of benzaldehyde with 40-50% selectivity by catalytic liquid phase air oxidation of toluene. The process involves providing a continuous flow of air in the presence of a catalyst, a co-catalyst, a promoter and a bromine source, and a carboxylic acid solvent selected from the group consisting of acetic, propionic, benzoic acids ranging between 0.05 to 0.3 wt. times with respect to toluene, at a temperature ranging between 60-130°C and pressures in the range of 1-10 bars for a period of 0.5-1.5 hours to obtain benzaldehyde (40-50%) along with other by-products. Preferably, the catalyst is selected from salts of Fe, Co, Mn, Mo and Ni, and the co-catalyst is selected from manganese or copper salts.

    摘要翻译： 本发明涉及到改进的方法用于生产苯甲醛与甲苯催化液相空气氧化40-50％的选择性。 该方法涉及在催化剂的存在下提供空气的连续流，助催化剂，促进剂和溴源，和羧酸选自乙酸，丙酸，苯甲酸测距以0.3 0:05之间的选择的溶剂 重量相对于甲苯倍，在1-10巴的范围内60-130℃，压力之间的范围内的一段0.5-1.5小时，得到苯甲醛（40-50％）地连同其它副产品的温度 产品。 优选地，所述催化剂为选自Fe，Co，锰，钼和镍的盐中选择，并且所述助催化剂是选自锰或铜的盐。