公开(公告)号：US4766262A

公开(公告)日：1988-08-23

申请号：US926461

申请日：1986-11-03

申请人： Sergio Carra ,  Renato Paludetto ,  Giuseppe Storti ,  Massimo Morbidelli ,  Bernard Gurtner ,  Raymond Commandeur

发明人： Sergio Carra ,  Renato Paludetto ,  Giuseppe Storti ,  Massimo Morbidelli ,  Bernard Gurtner ,  Raymond Commandeur

IPC分类号： B01J20/12 ,  B01D15/00 ,  B01J20/04 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02

CPC分类号： C07C17/389

摘要： A process for separating dichlorotoluene isomers from a mixture containing at least two dichlorotoluene isomers comprising(a) passing said mixture containing dichlorotoluene isomers through a mordenite having the following composition; in molar ratios:a H.sub.2 O: b M.sub.2/n O: Al.sub.2 O.sub.3 : (10-400 SiO.sub.2) in which M is hydrogen or at least one cation selected from an alkali metal or an alkaline-earth metal with the exception of cesium and rubidium, n is the valence of M, 0.7.ltoreq.a+b.ltoreq.1.1, and 0.ltoreq.b.ltoreq.0.2,(b) separating the non-adsorbed dichlorotoluenes from said mordenite,(c) contacting said mordenite containing the adsorbed isomers with a desorbent capable of separating said isomers from said mordenite, and(d) separating the desorbed isomers from the desorbent.

摘要翻译： 一种从含有至少两种二氯甲苯异构体的混合物中分离二氯甲苯异构体的方法，包括：（a）使含有二氯甲苯异构体的混合物通过具有以下组成的丝光沸石; 摩尔比：H 2 O：b M2 / nO：Al 2 O 3：（10-400SiO 2）其中M是氢或至少一种选自碱金属或碱土金属的阳离子，铯和铷除外，n 是M的化合价，0.7≤a+ b

公开(公告)号：US5126498A

公开(公告)日：1992-06-30

申请号：US613459

申请日：1990-11-09

申请人： Sergio Carra ,  Renato Paludetto ,  Guiseppe Storti ,  Massimo Morbidelli ,  Bernard Gurtner ,  Raymond Commandeur

发明人： Sergio Carra ,  Renato Paludetto ,  Guiseppe Storti ,  Massimo Morbidelli ,  Bernard Gurtner ,  Raymond Commandeur

IPC分类号： B01D15/00 ,  C07C17/00 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02 ,  C07C67/00

CPC分类号： C07C17/389

摘要： The process for the separation of isomeric dichlorotoluenes, comprising the steps of:(a) passing a mixture containing isomeric dichlorotoluenes over a zeolite of the ZSM5 type having the composition (expressed in molar ratios) of (0.9+0.2) M.sub.2/n O:Al.sub.2 O.sub.3 : (10-100) SiO.sub.2 : z H.sub.2 O in which M is at least one cation selected from H, an alkali metal, an alkaline earth metal or a tetraalkylammonium cation; n is the valency of M; and z is between 0 and 40:(b) separating the non-adsorbed dichlorotoluenes;(c) contacting the zeolite containing the adsorbed isomers with an eluent; and(d) separating the isomers from the eluent.

摘要翻译： 分离异构二氯甲苯的方法，包括以下步骤：（a）将含有异构二氯甲苯的混合物通过ZSM5型沸石，其组成（摩尔比）为（0.9 + 0.2）M2 / nO:Al2O3 ：（10-100）SiO 2 :z H 2 O，其中M为选自H，碱金属，碱土金属或四烷基铵阳离子中的至少一种阳离子; n是M的化合价; z在0和40之间：（b）分离未吸附的二氯甲苯; （c）使含有吸附异构体的沸石与洗脱液接触; 和（d）从洗脱液中分离异构体。

公开(公告)号：US4368347A

公开(公告)日：1983-01-11

申请号：US214286

申请日：1980-12-08

申请人： Sergio Carra ,  Elio Santacesaria ,  Massimo Morbidelli ,  Franco Codignola ,  Lucio DiFiore

发明人： Sergio Carra ,  Elio Santacesaria ,  Massimo Morbidelli ,  Franco Codignola ,  Lucio DiFiore

IPC分类号： C07C7/12 ,  C07C7/13 ,  C07C7/14 ,  G01N30/02

CPC分类号： C07C7/13 ,  G01N30/02

摘要： A process for the separation of metaxylene from aromatic C.sub.8 hydrocarbons, particularly from ethylbenzene and paraxylene, wherein a first phase is provided in which the mixture of aromatic hydrocarbons is selectively adsorbed, in vapor phase, into a catalytic bed consisting of zeolite of the Y type, preliminarily exchanged with potassium, and in a second phase a desorption is effected with a suitable solvent. The process, carried out at a temperature of 150.degree. to 200.degree. C. and preferably at atmospherical pressure, permits the recovery of metaxylene, substantially pure and at a concentration much higher than that of the starting mixture.

摘要翻译： 一种从芳烃C8烃，特别是乙苯和对二甲苯中分离间二甲苯的方法，其中提供了一种第一相，其中芳族烃的混合物以汽相方式被选择性地吸附到由Y型沸石组成的催化床中 ，用钾初步交换，在第二阶段用合适的溶剂进行解吸。 该方法在150℃至200℃的温度下进行，优选在大气压下进行，可以回收基本上纯的和以比起始混合物高的浓度的间二甲苯。