Ammoxidation catalysts for fluidized/moving bed reactors
    4.
    发明授权
    Ammoxidation catalysts for fluidized/moving bed reactors 失效
    用于流化/移动床反应器的氨氧化催化剂

    公开(公告)号:US06200926B1

    公开(公告)日:2001-03-13

    申请号:US08769446

    申请日:1996-12-19

    IPC分类号: B01J2300

    摘要: Solid catalysts suited for the fluidized/moving bed catalytic ammoxidation of alkanes comprise an active catalytic phase having the empirical formula (I): VSbaSnbTicFedEeOx  (I) in which E is an element which provides an oxide of rutile structure or an element which, in combination with V, Sb, Sn, Ti, Fe and/or with another element E, provides a phase of rutile or trirutile structure, or a solid solution of rutile structure, a is a whole or fractional number equal to or greater than 0.5, b, c, d and e, independently, are each a whole or fractional number ranging from 0 to 100, and x is a whole or fractional number determined by the oxidation state of the other elements, such active catalytic phase being deposited onto/into particulates of a solid and porous oxidic support therefor, and are produced by (a) impregnating the solid and porous oxidic support with a solution, in at least one saturated alcohol, of compounds of vanadium and antimony and, optionally, compounds of tin and/or titanium and/or of iron and/or of element E, (b) contacting the solid and porous oxidic support thus impregnated with an aqueous buffer solution having a pH ranging from about 6 to 8, (c) separating the solids from such aqueous buffer solution and drying same, and (d) calcining the dried solids in two stages.

    摘要翻译: 适用于流化/移动床的固体催化剂催化氨基氧化烷烃包括具有经验式(I)的活性催化相:其中E是提供金红石结构的氧化物的元素或与V,Sb ,Sn,Ti,Fe和/或另一元素E提供金红石或三元结构的相或金红石结构的固溶体,a是等于或大于0.5的整数或分数,b,c,d 和e独立地分别为0至100的整数或分数,x为由其它元素的氧化态确定的整数或分数,该活性催化相沉积在固体颗粒中, 通过(a)在至少一种饱和醇中的溶液中浸渍固体和多孔氧化载体来制备,其中钒和锑的化合物以及任选的锡和/或钛和/或 的铁和 /或元素E,(b)使由此浸渍的固体和多孔氧化物载体与pH范围为约6至8的水性缓冲溶液接触,(c)将该固体与该缓冲溶液分离并干燥,和 d)分两步焙烧干固体。

    Synthesis and applications of 2-OXO-4-methylthiobutyric acid, its salts and its derivatives
    6.
    发明申请
    Synthesis and applications of 2-OXO-4-methylthiobutyric acid, its salts and its derivatives 审中-公开
    2-OXO-4-甲硫基丁酸及其盐及其衍生物的合成与应用

    公开(公告)号:US20100178380A1

    公开(公告)日:2010-07-15

    申请号:US12654745

    申请日:2009-12-30

    IPC分类号: A23K1/22 C07C59/347 A23K1/18

    摘要: The invention relates to a process for preparing 2-oxo-4-methylthiobutyric acid (I), its salts and its derivatives in which R represents a group chosen from COOH, COOR′, NH2, NHR′ or NR′R″, where R′ and R″ are chosen, independently of one another, from the group of linear or branched alkyl radicals having from 1 to 12 carbon atoms and cycloalkyl radicals having from 3 to 12 carbon atoms, according to which process but-3-ene-1,2-diol (II) is catalytically and selectively oxidized to give 2-oxobut-3-enoic acid (III) and methyl mercaptan is selectively condensed with 2-oxobut-3-enoic acid (III). 2-Oxo-4-methylthiobutyric acid (I), its salts and its derivatives are used as food supplement, in particular in animal nutrition.

    摘要翻译: 本发明涉及制备2-氧代-4-甲硫基丁酸(I)及其盐及其衍生物的方法,其中R代表选自COOH,COOR',NH 2,NHR'或NR'R“的基团,其中R '和R“彼此独立地选自具有1至12个碳原子的直链或支链烷基基团和具有3至12个碳原子的环烷基基团,根据该方法,将3-丁烯-1-酮 (II)被催化和选择性氧化,得到2-氧代丁-3-烯酸(III),甲硫醇与2-氧代丁-3-烯酸(III)选择性缩合。 2-氧代-4-甲硫基丁酸(I),其盐及其衍生物用作食品补充剂,特别是在动物营养中。

    Synthesis and applications of 2-oxo-4-methylthiobutyric acid, its salts and its derivatives
    7.
    发明授权
    Synthesis and applications of 2-oxo-4-methylthiobutyric acid, its salts and its derivatives 失效
    2-氧代-4-甲硫基丁酸及其盐及其衍生物的合成与应用

    公开(公告)号:US07662997B2

    公开(公告)日:2010-02-16

    申请号:US11792586

    申请日:2005-12-29

    摘要: The invention relates to a process for preparing 2-oxo-4-methylthiobutyric acid (I), its salts and its derivatives in which R represents a group chosen from COOH, COOR′, NH2, NHR′ or NR′R″, where R′ and R″ are chosen, independently of one another, from the group of linear or branched alkyl radicals having from 1 to 12 carbon atoms and cycloalkyl radicals having from 3 to 12 carbon atoms, according to which process but-3-ene-1,2-diol (II) is catalytically and selectively oxidized to give 2-oxobut-3-enoic acid (III) and methyl mercaptan is selectively condensed with 2-oxobut-3-enoic acid (III). 2-Oxo-4-methylthiobutyric acid (I), its salts and its derivatives are used as food supplement, in particular in animal nutrition.

    摘要翻译: 本发明涉及一种制备2-氧代-4-甲硫基丁酸(I)及其盐及其衍生物的方法,其中R代表选自COOH,COOR',NH 2,NHR'或NR'R“的基团,其中 R'和R“彼此独立地选自具有1至12个碳原子的直链或支链烷基和具有3至12个碳原子的环烷基,根据该方法,将3-丁烯 -1,2-二醇(II)被催化和选择性氧化,得到2-氧代丁-3-烯酸(III),甲硫醇选自与2-氧代丁-3-烯酸(III)缩合。 2-氧代-4-甲硫基丁酸(I),其盐及其衍生物用作食品补充剂,特别是在动物营养中。

    Method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel
    9.
    发明授权
    Method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel 失效
    用含硫燃料运行的内燃机废气处理方法

    公开(公告)号:US06355220B1

    公开(公告)日:2002-03-12

    申请号:US09331474

    申请日:2000-02-02

    IPC分类号: C01B1700

    摘要: The present invention relates to a process for the treatment of exhaust gases from internal combustion engines operating with a fuel containing sulphur. This process is characterized in that use is made, as catalyst, of a composition based on a cerium oxide and on a zirconium oxide, in a cerium/zirconium atomic proportion of at least 1, and on at least one oxide chosen from yttrium, lanthanum and praseodymium oxide and which exhibits a specific surface, after calcination for 6 hours at 900 ° C., of at least 35 m2/g.

    摘要翻译: 本发明涉及一种处理来自内燃机的废气的处理方法,所述内燃机是用含硫燃料进行操作的。 该方法的特征在于,使用基于氧化铈和氧化锆的组合物作为催化剂,以至少1的铈/锆原子比例和至少一种选自钇,镧的氧化物 和氧化镨,并且在900℃煅烧6小时后表现出比表面积至少为35m 2 / g的比表面积。