Process for the production of ethylenically unsaturated carboxylic acids or esters and a catalyst therefor
    2.
    发明授权
    Process for the production of ethylenically unsaturated carboxylic acids or esters and a catalyst therefor 有权
    用于制备烯属不饱和羧酸或酯的方法及其催化剂

    公开(公告)号:US09346739B2

    公开(公告)日:2016-05-24

    申请号:US13883863

    申请日:2011-11-04

    摘要: A method of producing an ethylenically unsaturated carboxylic acid or ester such as (meth) acrylic acid or alkyl esters thereof, for example, methyl methacrylate is described. The process comprises the steps of contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester, for example, propionic acid or alkyl esters thereof in the presence of a catalyst and optionally an alcohol. The catalyst comprises group II metal phosphate crystals having rod or needle like morphology or a suitable source thereof. The phosphate may be a hydroxyapatite, pyrophosphate, hydroxyphosphate, PO42− phosphate or mixtures thereof. The group II metal may be selected from Ca, Sr, Ba or mixtures thereof, for example, strontium hydroxyapatite and calcium hydroxyapatite. A catalyst system comprising a crystalline metal phosphate catalyst and a catalyst support is also described. The metal phosphate has rod/needle like morphology.

    摘要翻译: 描述了制备烯键式不饱和羧酸或酯如(甲基)丙烯酸或其烷基酯的方法,例如甲基丙烯酸甲酯。 该方法包括使甲醛或其合适的来源与羧酸或酯,例如丙酸或其烷基酯在催化剂和任选的醇的存在下接触的步骤。 催化剂包括具有棒状或针状形态的II族金属磷酸盐晶体或其合适的来源。 磷酸盐可以是羟基磷灰石,焦磷酸盐,羟基磷酸盐,PO42-磷酸盐或其混合物。 II族金属可以选自Ca,Sr,Ba或其混合物,例如羟基磷灰石锶和羟基磷灰石钙。 还描述了包含结晶金属磷酸盐催化剂和催化剂载体的催化剂体系。 金属磷酸盐具有棒/针状形态。

    PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS AND A CATALYST THEREFOR
    3.
    发明申请
    PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS AND A CATALYST THEREFOR 有权
    生产乙烯不饱和羧酸或酯及其催化剂的方法

    公开(公告)号:US20150307437A1

    公开(公告)日:2015-10-29

    申请号:US13883863

    申请日:2011-11-04

    摘要: A method of producing an ethylenically unsaturated carboxylic acid or ester such as (meth) acrylic acid or alkyl esters thereof, for example, methyl methacrylate is described. The process comprises the steps of contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester, for example, propionic acid or alkyl esters thereof in the presence of a catalyst and optionally an alcohol. The catalyst comprises group II metal phosphate crystals having rod or needle like morphology or a suitable source thereof. The phosphate may be a hydroxyapatite, pyrophosphate, hydroxyphosphate, PO42− phosphate or mixtures thereof. The group II metal may be selected from Ca, Sr, Ba or mixtures thereof, for example, strontium hydroxyapatite and calcium hydroxyapatite. A catalyst system comprising a crystalline metal phosphate catalyst and a catalyst support is also described. The metal phosphate has rod/needle like morphology.

    摘要翻译: 描述了制备烯键式不饱和羧酸或酯如(甲基)丙烯酸或其烷基酯的方法,例如甲基丙烯酸甲酯。 该方法包括使甲醛或其合适的来源与羧酸或酯,例如丙酸或其烷基酯在催化剂和任选的醇的存在下接触的步骤。 催化剂包括具有棒状或针状形态的II族金属磷酸盐晶体或其合适的来源。 磷酸盐可以是羟基磷灰石,焦磷酸盐,羟基磷酸盐,PO42-磷酸盐或其混合物。 II族金属可以选自Ca,Sr,Ba或其混合物,例如羟基磷灰石锶和羟基磷灰石钙。 还描述了包含结晶金属磷酸盐催化剂和催化剂载体的催化剂体系。 金属磷酸盐具有棒/针状形态。

    NITRIDED MIXED OXIDE CATALYST SYSTEM AND A PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS
    4.
    发明申请
    NITRIDED MIXED OXIDE CATALYST SYSTEM AND A PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS 有权
    硝化混合氧化物催化剂体系及一种生产乙烯不饱和羧酸或酯的方法

    公开(公告)号:US20130158287A1

    公开(公告)日:2013-06-20

    申请号:US13805413

    申请日:2011-06-24

    IPC分类号: B01J27/24

    摘要: The invention relates to a method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an α, β ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table. The invention extends to a catalyst system.

    摘要翻译: 本发明涉及一种制备烯属不饱和羧酸或酯,优选α,β-烯属不饱和羧酸或酯的方法。 该方法包括在催化剂存在下和任选在醇存在下使甲醛或其合适的来源与羧酸或酯接触。 催化剂包括具有至少两种金属阳离子M1和M2的氮化金属氧化物,其中M1选自第2,3,4,13族(也称为IIIA)或14(也称为IVA)的金属, 周期表和M2选自元素周期表第5或15族(也称为VA)的金属。 本发明延伸到催化剂体系。