Production of mixtures of methylenedianiline and its higher homologues using calcined metal oxide-silica catalysts
    1.
    发明授权
    Production of mixtures of methylenedianiline and its higher homologues using calcined metal oxide-silica catalysts 有权
    使用煅烧金属氧化物 - 二氧化硅催化剂生产亚甲基二苯胺及其高级同系物的混合物

    公开(公告)号:US08558027B2

    公开(公告)日:2013-10-15

    申请号:US13058603

    申请日:2009-08-14

    IPC分类号: C07C211/00

    摘要: The present disclosure relates to compositions, systems, and methods of forming an amine (e.g., methylenedianiline (MDA)) using an acid catalyst including, for example, a metal oxide-silica catalyst calcined at temperature(s) of about ≧500° C. to form a solid acid silica-metal oxide catalyst. A metal oxide of a solid acid silica-metal oxide catalyst may comprise alumina. A process for making a solid acid silica-metal oxide catalyst may comprise calcining an amorphous alumina-silica material at temperature(s) of about ≧500° C. and/or under an anhydrous and/or inert atmosphere. A rearrangement reaction of the condensation product of aniline and formaldehyde in the presence of a solid acid silica-metal oxide catalyst may yield more MDA and/or more desirable isomer(s) of MDA than reactions performed with a corresponding catalyst calcined at temperature(s) of less than 500° C.

    摘要翻译: 本公开内容涉及使用酸催化剂形成胺(例如亚甲基二苯胺(MDA))的组合物,体系和方法,所述酸催化剂包括例如在大约> 500℃的温度下煅烧的金属氧化物 - 二氧化硅催化剂 C.形成固体酸二氧化硅 - 金属氧化物催化剂。 固体二氧化硅 - 金属氧化物催化剂的金属氧化物可以包含氧化铝。 制备固体酸性二氧化硅 - 金属氧化物催化剂的方法可以包括在约> = 500℃的温度和/或在无水和/或惰性气氛下煅烧无定形氧化铝 - 二氧化硅材料。 在固体酸二氧化硅 - 金属氧化物催化剂存在下,苯胺和甲醛的缩合产物的重排反应可以产生更多的MDA和/或更理想的MDA异构体,而不是用相对应的在 )小于500℃

    PRODUCTION OF MIXTURES OF METHYLENEDIANILINE AND ITS HIGHER HOMOLOGUES USING CALCINED METAL OXIDE-SILICA CATALYSTS
    2.
    发明申请
    PRODUCTION OF MIXTURES OF METHYLENEDIANILINE AND ITS HIGHER HOMOLOGUES USING CALCINED METAL OXIDE-SILICA CATALYSTS 有权
    使用计算的金属氧化物二氧化硅催化剂生产甲基亚胺的混合物及其较高的HOMOLOG

    公开(公告)号:US20110144368A1

    公开(公告)日:2011-06-16

    申请号:US13058603

    申请日:2009-08-14

    IPC分类号: C07C209/78 C07F7/02

    摘要: The present disclosure relates to compositions, systems, and methods of forming an amine (e.g., methylenedianiline (MDA)) using an acid catalyst including, for example, a metal oxide-silica catalyst calcined at temperature(s) of about ≧500° C. to form a solid acid silica-metal oxide catalyst. A metal oxide of a solid acid silica-metal oxide catalyst may comprise alumina. A process for making a solid acid silica-metal oxide catalyst may comprise calcining an amorphous alumina-silica material at temperature(s) of about ≧500° C. and/or under an anhydrous and/or inert atmosphere. A rearrangement reaction of the condensation product of aniline and formaldehyde in the presence of a solid acid silica-metal oxide catalyst may yield more MDA and/or more desirable isomer(s) of MDA than reactions performed with a corresponding catalyst calcined at temperature(s) of less than 500° C.

    摘要翻译: 本公开涉及使用酸催化剂形成胺(例如亚甲基二苯胺(MDA))的组合物,体系和方法,所述酸催化剂包括例如在约500℃的温度下煅烧的金属氧化物 - 二氧化硅催化剂 形成固体酸二氧化硅 - 金属氧化物催化剂。 固体二氧化硅 - 金属氧化物催化剂的金属氧化物可以包含氧化铝。 制备固体酸性二氧化硅 - 金属氧化物催化剂的方法可以包括在约≥500℃的温度和/或在无水和/或惰性气氛下煅烧无定形氧化铝 - 二氧化硅材料。 在固体酸二氧化硅 - 金属氧化物催化剂存在下,苯胺和甲醛的缩合产物的重排反应可以产生更多的MDA和/或更理想的MDA异构体,而不是用相对应的在 )小于500℃