申请人:POLIMERI EUROPA S.p.A.
公开号:US20040127762A1
公开(公告)日:2004-07-01
A process is described for the contemporaneous preparation of mesitylene and durene, characterized in that mesitylene and durene are obtained exclusively starting from pseudo-cumene without the use of any further chemical compound, operating in continuous, at a temperature ranging from 210 to 400° C., at a pressure ranging from 1 to 50 bar, with a weight space velocity ranging from 0.1 to 20 hours
−1
and in the presence of a catalyst based on crystalline metal-silicates in acid form. After the recovery of mesitylene and durene from the reaction raw product, some of the remaining components of the raw product itself are recycled and fed to the reactor together with the pseudo-cumene.
描述了一种同时制备三甲苯和二甲苯的过程,其特点在于仅使用伪叔丙烷,不使用任何其他化学物质,在连续操作中,在温度范围为210至400°C,压力范围为1至50 bar,重量空间速率为0.1至20小时-1,并在基于结晶金属硅酸盐的酸性催化剂的存在下进行。在从反应原料中回收三甲苯和二甲苯之后,将剩余的一些原料组分回收并与伪叔丙烷一起进入反应器。