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
    • 81. 发明授权
    • Method for producing shell catalysts for the catalytic vapor-phase oxidation of aromatic hydrocarbons and catalysts obtained in such a manner
    • 用于生产用于芳烃的催化气相氧化的壳催化剂和以这种方式获得的催化剂的方法
    • US06528683B1
    • 2003-03-04
    • US09701517
    • 2000-11-30
    • Thomas HeidemannFrank RosowskiGerd LindenMichael SeufertGerhard HefelePeter Michael Lorz
    • Thomas HeidemannFrank RosowskiGerd LindenMichael SeufertGerhard HefelePeter Michael Lorz
    • C07C5116
    • B01J37/0232B01J23/22B01J37/0219B01J37/0223C07C51/265Y10T428/31935C07C63/16
    • The invention relates to a method for producing shell catalysts for the catalytic vapor-phase oxidation of aromatic carboxylic acids and/or carboxylic acid anhydrides comprised of a supporting core and of catalytically active metal oxides which are deposited in a shell-shaped manner on said supporting core. The inventive catalysts are obtained by spraying an aqueous active mass suspension, said suspension containing the active metal oxides, at higher temperatures onto the hot supporting material which has a temperature ranging from 50 to 450° C. The aqueous active mass suspension contains 1 to 10 wt. %, with regard to the solid content of the active mass suspension, a binding agent comprised of A) a polymerizate obtained by radical polymerization, containing 5 to 100 wt. % of monomers (a) in the form of ethylenically unsaturated acid anhydrides or ethylenically unsaturated dicarboxylic acids whose carboxyl groups can form an anhydride and containing 0 to 95 wt. % monoethylenically unsaturated monomers (b) with the provision that the monomers (a) and (b) comprise, on average, a maximum of 6 carbon atoms which are not functionalized with groups containing oxygen, and of B) an alkanolamine having at least 2 OH groups, a maximum of 2 nitrogen atoms and a maximum of 8 C-atoms, whereby the weight ratio A:B ranges from 1:0.05 to 1:1.
    • 本发明涉及一种用于制备用于催化气相氧化芳族羧酸和/或羧酸酐的壳催化剂的方法,所述芳族羧酸和/或羧酸酐由支撑芯和催化活性金属氧化物组成,其以壳形方式沉积在所述支撑 核心。 本发明的催化剂是通过将含水活性物质悬浮液(含有活性金属氧化物的悬浮液)在较高温度下喷洒到温度为50-450℃的热支撑材料上而获得的。水性活性悬浮液含有1至10 重量 %,关于活性悬浮液的固体含量,结合剂由A)通过自由基聚合获得的聚合物,其含有5〜100重量% %的烯属不饱和酸酐或烯属不饱和二羧酸形式的单体(a),其羧基可以形成酸酐并含有0至95重量% %单烯属不饱和单体(b),条件是单体(a)和(b)平均包含不含有氧的基团不被官能化的最多6个碳原子,和B)具有至少2个的链烷醇胺 OH基团,最多2个氮原子和最多8个C原子,其中重量比A:B的范围为1:0.05至1:1。
    • 87. 发明申请
    • PREPARATION OF PHTHALIC ANHYDRIDE BY GAS PHASE OXIDATION OF O-XYLENE IN A MAIN REACTOR AND POSTREACTOR
    • 通过气相氧化在主反应器和载体中制备邻苯二甲酸二异氰酸酯
    • US20090156835A1
    • 2009-06-18
    • US12301370
    • 2007-05-18
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • C07D307/89
    • C07D307/89C07C51/265C07C63/16
    • A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in which a gaseous mixture of o-xylene and an oxygenous gas is converted in a main reactor to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, the heat of reaction which arises in the main reactor being removed at least partly by indirect cooling with a heat carrier medium, and the intermediate reaction product being introduced into a postreactor. The concentration of unconverted o-xylene in the intermediate reaction product is at least 1% by weight, and the sum of the concentrations of phthalic anhydride underoxidation products in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
    • 描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法,其中邻二甲苯和氧气的气体混合物在主反应器中转化为包含未转化的邻二甲苯的气态中间体反应产物, 邻苯二甲酸酐脱氧产物和邻苯二甲酸酐,至少部分通过用载热介质间接冷却除去主反应器中产生的反应热,并将中间反应产物引入后反应器中。 中间反应产物中未转化的邻二甲苯的浓度为至少1重量%,中间反应产物中邻苯二甲酸酐未氧化产物的浓度之和为至少0.5重量%。 该方法允许邻苯二甲酸酐的总产率提高,而不会产生质量的显着劣化。