公开(公告)号：US06207605B1

公开(公告)日：2001-03-27

申请号：US08905409

申请日：1997-08-04

申请人： Masatsugu Kawase ,  Kouji Nomura ,  Yukito Nagamori ,  Jiro Kinoshita

发明人： Masatsugu Kawase ,  Kouji Nomura ,  Yukito Nagamori ,  Jiro Kinoshita

IPC分类号： B01J2904

CPC分类号： C10G11/05 ,  B01J29/70 ,  B01J2229/16 ,  B01J2229/36 ,  C10G35/095

摘要： A high silica content zeolite-based catalyst for use in a reaction which uses a feedstock containing an aromatic hydrocarbon or which gives a product containing an aromatic hydrocarbon, which catalyst satisfies the following requirements (1), (2), (3) and (4): (1) the zeolite constituting a zeolite-based catalyst has an SiO2/Al2O3 molar ratio of from 20 to 200; (2) the zeolite constituting a zeolite-based catalyst has a primary particle diameter of from 0.3 to 3 &mgr;m; (3) when a zeolite-based catalyst is converted into H type, the H type zeolite-based catalyst has a ratio of the number of surface acid sites to the total number of acid sites is from 0.03 to 0.15; and (4) a zeolite-based catalyst exhibits a pyridine-desorbed amount (B) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type after being subjected to a steam treatment at an H2O partial pressure of 0.8 atm and a temperature of 650° C. for 5 hours, and a pyridine-desorbed amount (A) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type without the steam treatment, which amounts satisfy the following requirements: &agr;≦1.6 α = ( 1 B 2 - 1 A 2 ) ÷ 5 × 10 5 .

摘要翻译： 用于反应中的高二氧化硅含量的沸石基催化剂，其使用含有芳族烃的原料或产生含有芳族烃的产物，该催化剂满足以下要求（1），（2），（3）和（ 4）：（1）构成沸石型催化剂的沸石的SiO 2 / Al 2 O 3摩尔比为20〜200; （2）构成沸石型催化剂的沸石的初级粒径为0.3〜3μm; （3）当沸石型催化剂转化为H型时，H型沸石型催化剂的表面酸性位数与酸性位置总数之比为0.03〜0.15; 和（4）沸石型催化剂在通过热脱附法在500℃〜900℃的温度下测定的吡啶解吸量（B）后，在经受蒸汽后变为H型时 在H 2 O分压为0.8atm，温度为650℃下处理5小时，并通过热解吸在500℃至900℃的温度下测定吡啶解吸量（A） 方法转换为H型无蒸汽处理，其数量满足以下要求：

公开(公告)号：US4789442A

公开(公告)日：1988-12-06

申请号：US106353

申请日：1987-10-09

申请人： Koji Nakagawa ,  Yukito Nagamori

发明人： Koji Nakagawa ,  Yukito Nagamori

IPC分类号： C25B3/10

CPC分类号： C25B3/105

摘要： A method for producing adiponitrile through the electrohydrodimerization of acrylonitrile by electrolyzing an emulsion comprised of an aqueous phase and an organic phase in at least one undivided cell having a cathode of lead or a lead alloy, in which an ethyltributylammonium salt as a quaternary ammonium salt is included in the aqueous phase in a concentration of from 0.02 to 0.08 mol/liter. The method of the present invention is remarkably improved with respect to the prevention of the corrosion of the cathode.

摘要翻译： 通过在具有铅或铅合金的阴极的至少一个未分隔的电池中电解由水相和有机相组成的乳液，其中作为季铵盐的乙基三丁基铵盐是通过电化由丙烯腈的电子二聚化制备己二腈的方法， 以0.02至0.08mol /升的浓度包含在水相中。 关于防止阴极的腐蚀，本发明的方法得到显着改进。