公开(公告)号：US20050137437A1

公开(公告)日：2005-06-23

申请号：US10741323

申请日：2003-12-18

申请人： Grigorii Soloveichik ,  Olga Ponomareva ,  Andrei Kuznetsov ,  Andrei Smirnov ,  Elena Knyazeva ,  Irina Moskovskaya ,  Irina Ivanova

发明人： Grigorii Soloveichik ,  Olga Ponomareva ,  Andrei Kuznetsov ,  Andrei Smirnov ,  Elena Knyazeva ,  Irina Moskovskaya ,  Irina Ivanova

IPC分类号： C07C2/66 ,  C07C2/68

CPC分类号： C07C2/66 ,  C07C2529/08 ,  C07C2529/18 ,  C07C2529/40 ,  C07C15/14

摘要： A continuous flow process has been discovered for the highly selective isopropylation of biphenyl to 4,4′-diisopropylbiphenyl. Thus biphenyl and propene in decalin are passed through a solid zeolite catalyst bed contained in a flow reactor at moderate temperature (220° C.) and pressure (10-30 atm) together with a continuous stream of nitrogen. Surprisingly, catalyst performance is improved by the continuous introduction of the nitrogen into the reactor along with the reactants and solvent. Thus, improved performance as measured by higher percent conversion to products, higher yields of diisopropylated products and lower yields of undesired triisopropylated products are observed when a diluent gas such as nitrogen is employed. The alkylation process is selective for 4,4′-diisopropylbiphenyl using a zeolite catalyst, preferably a dealuminated mordenite in which the molar ratio of SiO2 to Al2O3 moieties is in a range between about 10 to 1 and about 500 to 1.

摘要翻译： 已经发现连续流动方法用于联苯至4,4'-二异丙基联苯的高选择性异丙基化。 因此，萘烷中的联苯和丙烯与中等温度（220℃）和压力（10-30atm）的流动反应器中的固体沸石催化剂床和连续的氮气流一起通过。 令人惊奇的是，通过与反应物和溶剂一起连续地将氮气引入反应器，提高了催化剂性能。 因此，当使用诸如氮气的稀释气体时，观察到通过较高的产物转化率，二异丙基化产物的较高收率和较少的不需要的三异丙基化产物的产率来测量的改进的性能。 烷基化方法对于4,4'-二异丙基联苯是选择性的，其使用沸石催化剂，优选脱铝丝光沸石，其中SiO 2与Al 2 O 2的摩尔比 3个部分在约10至1至约500至1的范围内。

公开(公告)号：US20050137436A1

公开(公告)日：2005-06-23

申请号：US10741324

申请日：2003-12-18

申请人： Olga Ponomareva ,  Andrei Kuznetsov ,  Valentina Yushchenko ,  Andrei Smirnov ,  Elena Knyazeva ,  Irina Moskovskaya ,  Irina Ivanova ,  Grigorii Soloveichik

发明人： Olga Ponomareva ,  Andrei Kuznetsov ,  Valentina Yushchenko ,  Andrei Smirnov ,  Elena Knyazeva ,  Irina Moskovskaya ,  Irina Ivanova ,  Grigorii Soloveichik

IPC分类号： C07C2/66 ,  B01J29/00 ,  C07B61/00 ,  C07C2/12 ,  C07C6/12 ,  C07C15/14

CPC分类号： C07C2/66 ,  C07C2529/18 ,  C07C15/14

摘要： A continuous flow process has been discovered for the highly selective isopropylation of biphenyl to 4,4′-diisopropylbiphenyl. Thus biphenyl and propene in decalin are passed through a solid catalyst bed contained in a flow reactor at moderate temperature (220° C.) and pressure (10-30 atm) together with a continuous stream of nitrogen. The catalyst is an acidic zeolite catalyst having a molar ratio of SiO2 to Al2O3 in a range between about 20 to 1 and about 500 to 1. Optimal catalytic performance is achieved when 35% or more of the active sites in the catalyst have an activation energy of ammonia desorption in a range between about 145 kJ/mol and about 170 kJ/mol. Additional enhancements of catalyst performance can be achieved by pretreating the acidic zeolite catalyst with a volatile basic agent prior to the alkylation reaction.

摘要翻译： 已经发现连续流动方法用于联苯至4,4'-二异丙基联苯的高选择性异丙基化。 因此，萘烷中的联苯和丙烯与中等温度（220℃）和压力（10-30atm）的流动反应器中所含的固体催化剂床和连续的氮气流一起通过。 所述催化剂是一种酸性沸石催化剂，其摩尔比为SiO 2至约2:1至约2:1至约2.0:1 500至1.当催化剂中35％或更多的活性位点具有在约145kJ / mol至约170kJ / mol之间范围内的氨解吸活化能时，实现最佳催化性能。 可以通过在烷基化反应之前用挥发性碱性试剂预处理酸性沸石催化剂来实现催化剂性能的进一步增强。