会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Process for producing p-xylene
    • 生产对二甲苯的方法
    • US4377718A
    • 1983-03-22
    • US285464
    • 1981-07-21
    • Kimihiko SatoTokuji SakaiYasuo YamasakiTamio OnoderaKoji Sumitani
    • Kimihiko SatoTokuji SakaiYasuo YamasakiTamio OnoderaKoji Sumitani
    • B01J29/00C07C1/00C07C2/86C07C15/08C07C67/00C07C2/68
    • C07C2/864C07C2/865C07C2529/44Y02P20/52Y02P20/584
    • In a process for producing p-xylene which comprises catalytically methylating toluene with a methylating agent in the gaseous phase, the improvement wherein(a) said methylation is carried out continuously in a multi-stage reaction system consisting of a plurality of separate series-connected fixed catalyst layers without separating the resulting xylenes in an intermediate stage,(b) said toluene is fed together with hydrogen gas into only the first-stage fixed catalyst layer and passed successively through the subsequent fixed catalyst layers, the amount of toluene fed being such that the total weight hourly space velocity of toluene is from 1 to 300 hr.sup.-1,(c) said methylating agent is fed into each of said fixed catalyst layers, if desired together with hydrogen gas, the amount of the methylating agent fed into each catalyst layer being 0.01/t moles to 1/t moles, in which t is the number of methyl groups in the methylating agent, per mole of toluene fed into the first-stage catalyst layer, and the total amount of the methylating agent fed into all of the catalyst layers being within the range of 0.1/t moles to 2/t moles, in which t is as defined, per mole of toluene fed into the first-stage catalyst layer, and(d) each fixed catalyst layer is filled with a catalyst composed of a crystalline aluminosilicate containing magnesium oxide or lanthanide oxide.
    • 在一种生产对二甲苯的方法中,其包括在气相中用甲基化剂甲苯化甲苯,其中(a)所述甲基化在多级反应体系中连续进行,所述多级反应体系由多个单独的串联 固定的催化剂层,而不在中间阶段分离所得的二甲苯,(b)将所述甲苯与氢气一起进入第一级固定催化剂层,并依次通过随后的固定催化剂层,进料的甲苯的量 甲苯的总重小时空速为1〜300小时-1,(c)如果需要,将所述甲基化剂与氢气一起进料到每个所述固定催化剂层中,将甲基化剂加入到每个 催化剂层为每摩尔进料到第一阶段催化剂中的甲苯为0.01 / t摩尔至1 / t摩尔,其中t为甲基化剂中的甲基数 并且进料到所有催化剂层中的甲基化剂的总量在0.1 / t摩尔至2 / t摩尔的范围内,其中t定义为每摩尔进料到第一阶段催化剂中的甲苯 层,并且(d)每个固定的催化剂层填充有由含有氧化镁或镧系元素氧化物的结晶硅铝酸盐组成的催化剂。
    • 10. 发明授权
    • Method for preparing dialkylnaphthalene
    • 制备二烷基萘的方法
    • US5365001A
    • 1994-11-15
    • US39067
    • 1993-04-08
    • Koji SumitaniKeizo ShimadaSeiji ItohKimihiko SatoRisuke SuzukiAkio Namatame
    • Koji SumitaniKeizo ShimadaSeiji ItohKimihiko SatoRisuke SuzukiAkio Namatame
    • B01J23/60B01J23/62C07C5/41C07C5/00C07C15/24
    • B01J23/62B01J23/60C07C5/41
    • A method for preparing a dialkylnaphthalene in one step by contacting an dialkylbenzene compound with a solid catalyst in a gas or liquid phase in the presence of hydrogen, using a catalyst having composition (I) or (II) below:(1)(M.sup.1).sub.a.(M.sup.2).sub.b.(SiO.sub.2.XAl.sub.2 O.sub.3).(Al.sub.2 O.sub.3).sub.c (I)(2) Mixture of II-(i) and II-(ii):(M.sup.3).sub.d.(Al.sub.2 O.sub.3) II-(i)(M.sup.4).sub.e.(SiO.sub.2.XAl.sub.2 O.sub.3) II-(ii)wherein M.sup.1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and rhenium;M.sup.2 is a member selected from the group consisting of zinc, gallium, and oxides thereof;M.sup.3 is a metal belonging to group VIII of a periodic table;M.sup.4 is at least one alkali metal; anda, b, c, d, e, and X represent proportions, respectively.
    • PCT No.PCT / JP92 / 01006 Sec。 371日期:1993年4月8日 102(e)日期1993年4月8日PCT提交1992年8月6日PCT公布。 公开号WO93 / 02995 日本2月18日,1993年。一种通过使用具有下述组成(I)或(II)的催化剂在氢气存在下,在气相或液相中使二烷基苯化合物与固体催化剂接触的步骤中制备二烷基萘的方法。 :(1)(M1)a。(M2)b。(SiO2.XAl2O3)(Al2O3)c(I)(2)II-(i)和II-(ii)的混合物:(M3)d。 Al 2 O 3)II-(i)(M4)e。(SiO 2·XAl 2 O 3)II-(ii)其中M1是选自属于元素周期表第Ⅷ族的金属和铼的金属; M2是选自锌,镓及其氧化物的成员; M3是属于周期表第VIII族的金属; M4是至少一种碱金属; 和a,b,c,d,e和x分别表示比例。