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
    • 3. 发明申请
    • PROCESS FOR PREPARING AN ESTER
    • 制备ESTER的方法
    • WO2011015385A1
    • 2011-02-10
    • PCT/EP2010/055862
    • 2010-04-29
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.HAAN, Rene, JohanLANGE, Jean-Paul
    • HAAN, Rene, JohanLANGE, Jean-Paul
    • C07C67/08
    • C07C67/08C07C67/00C07C69/24
    • A process for preparing an ester of formula (I): R 3 CH 2 - (CR 1 R 2 ) n -CH 2 -O-CO-(CR 1 R 2 ) n -CH 2 R 3 (I) wherein n is 1-3 and R 1 and R 2 are each, independently, a hydrogen atom or a carbon-linked organic group and R 3 is a carbon-linked organic group, by hydrogenation of a reactant selected from: (a) a lactone of formula (II) wherein n is 1-3 and R 1 and R 2 are each, independently, a hydrogen atom or a carbon-linked organic group and R 3 is a carbon-linked organic group; (b) an ester of a carboxylic acid of formula (III) R 4 -O-CO- (CR 1 R 2 ) n -CO-R 3 (III) wherein n is 1-3 and R 1 and R 2 are each, independently, a hydrogen atom or a carbon-linked organic group and R 3 and R 4 are a carbon-linked organic group; and c) a carboxylic acid of formula (IV) H-O-CO- (CR 1 R 2 ) n -CO-R 3 (IV) wherein n is 1-3 and R 1 and R 2 are each, independently, a hydrogen atom or a carbon-linked organic group and R 3 is a carbon-linked organic group; which process involves contacting the reactant with a heterogeneous catalyst comprising a hydrogenating metal in the presence of hydrogen, wherein the catalyst is a zeolite-free heterogeneous catalyst comprising a hydrogenating metal supported on a metal oxide or a mixed oxide.
    • 制备式(I)的酯的方法:R 3 -CH 2 - (CR 1 R 2)n -CH 2 -O-CO-(CR 1 R 2)n -CH 2 R 3(I)其中n为1-3,并且R 1和R 2各自独立地为 氢原子或碳连接的有机基团,并且R 3是碳连接的有机基团,通过氢化选自以下的反应物:(a)式(II)的内酯,其中n为1-3且R 1和R 2各自为氢, 独立地是氢原子或碳连接的有机基团,并且R 3是碳连接的有机基团; (b)式(III)的羧酸R 4 -O-CO-(CR 1 R 2)n -CO-R 3(III)的酯,其中n为1-3,并且R 1和R 2各自独立地为氢原子或 碳键的有机基团,R 3和R 4为碳键的有机基团; 和c)式(Ⅳ)HO-CO-(CR1R2)n-CO-R3(Ⅳ)的羧酸,其中n为1-3,R 1和R 2各自独立地为氢原子或碳键连接的有机 基团和R 3是碳键的有机基团; 该方法包括在氢气存在下使反应物与包含氢化金属的多相催化剂接触,其中所述催化剂是不含沸石的多相催化剂,其包含负载在金属氧化物上的氢化金属或混合氧化物。
    • 8. 发明申请
    • PROCESS FOR CONVERTING LEVULINIC ACID INTO PENTANOIC ACID
    • 将维生素酸转化成苦味酸的方法
    • WO2008142127A1
    • 2008-11-27
    • PCT/EP2008/056293
    • 2008-05-21
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.AYOUB, Paul MarieLANGE, Jean-Paul
    • AYOUB, Paul MarieLANGE, Jean-Paul
    • C07C51/36C07C53/126
    • C07C51/36C07C53/126
    • A process for converting levulinic acid into pentanoic acid, the process comprising the following steps: (a) contacting a feedstock comprising levulinic acid under hydrogenating conditions, in the presence of hydrogen, with a non-acidic heterogeneous hydrogenation catalyst comprising a hydrogenation metal supported on a solid catalyst carrier to obtain a first effluent comprising gamma valerolactone; (b) contacting at least part of the first effluent under hydrogenating conditions, in the presence of hydrogen, with a strongly acidic catalyst and a hydrogenation metal to obtain a second effluent comprising pentanoic acid, wherein step (b) is operated at a conversion per pass of at most 70 wt% to obtain the second effluent comprising pentanoic acid and unconverted gamma valerolactone, and wherein part of the unconverted gamma valerolactone is recycled to step (a) and/or step (b).
    • 一种将乙酰丙酸转化为戊酸的方法,该方法包括以下步骤:(a)在氢存在下,在氢化条件下,将包含乙酰丙酸的原料与非酸性非均相氢化催化剂接触,所述非酸性非均相氢化催化剂包含负载在 固体催化剂载体,以获得包含γ-戊内酯的第一流出物; (b)在氢气条件下,在氢气存在下,与强酸性催化剂和氢化金属接触至少部分第一流出物以获得包含戊酸的第二流出物,其中步骤(b)以每转化率 通过至多70重量%以获得包含戊酸和未转化的γ-戊内酯的第二流出物,并且其中部分未转化的γ-戊内酯再循环至步骤(a)和/或步骤(b)。