制备芳族胺的催化剂体系

文档序号:260936 发布日期:2021-11-16 浏览:25次 >En<

阅读说明:本技术 制备芳族胺的催化剂体系 (Catalyst system for producing aromatic amines ) 是由 V·弗洛卡 D·加雷拉 M·赖泽尔 T·海德曼 H·德维尼 于 2020-04-01 设计创作,主要内容包括:本发明涉及一种适用于将芳族硝基化合物(I)氢化形成相应的芳族胺(II)的催化剂体系,该催化剂体系包含作为基本成分的:选自碳化硅、刚玉(α-Al-(2)O-(3))和微孔至无孔氧化锆(ZrO-(2))的组分A;和组分B,其包含B1选自二氧化硅、γ-、δ-或θ-氧化铝Al-(2)O-(3)、二氧化钛、二氧化锆和石墨的一种载体材料,B2选自铜、镍、钯、铂和钴的一种金属或多种金属,以及任选地B3选自至少一种选自元素周期表的I主族、II主族、IV主族和II副族、V副族、VI副族和VIII副族中的金属的其他金属,组分A的比例为5至60重量%,基于催化剂体系的总重量计,并且芳族硝基化合物(I)为通式R-(NO-(2))-(n)(I)中的那些,芳族胺(II)为通式R-(NH-(2))-(n)(II)中的那些,以及式(I)和(II)中的R部分和指数n具有以下含义:R为取代或未取代的芳族C-(6)-C-(10)部分,n为1至5的整数。(The present invention relates to a catalyst system suitable for hydrogenating aromatic nitro compounds (I) to form the corresponding aromatic amines (II), comprising as essential constituents: selected from silicon carbide and corundum (alpha-Al) 2 O 3 ) And microporous to nonporous zirconia (ZrO) 2 ) Component A of (1); and component B comprising B1 selected from the group consisting of silica, gamma, delta, or theta alumina Al 2 O 3 Titanium dioxide, zirconium dioxide and graphite, B2 being a metal or metals from the group consisting of copper, nickel, palladium, platinum and cobalt, and optionally B3 being at least one further metal from the group consisting of the metals of main group I, main group II, main group IV and subgroups II, V, VI and VIII of the periodic Table of the elements, the proportion of component A being from 5 to 60% by weight, based on the total weight of the catalyst system, and the aromatic nitro compound (I) being of the formula R- (NO) 2 ) n (I) Of (A), the aromatic amine (II) is of the formula R- (NH) 2 ) n Those of formula (II), as well as the R moieties and the index n in formulae (I) and (II), have the following meanings: r is a substituted or unsubstituted aromatic C 6 ‑C 10 And n is an integer of 1 to 5.)

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