PROCÉDÉ DE PRÉPARATION DE L'ACROLÉINE À PARTIR DE GLYCÉROL
    2.
    发明公开
    PROCÉDÉ DE PRÉPARATION DE L'ACROLÉINE À PARTIR DE GLYCÉROL 有权
    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN AUS GLYCEROL

    公开(公告)号:EP2914569A1

    公开(公告)日:2015-09-09

    申请号:EP13801617.5

    申请日:2013-10-29

    IPC分类号: C07C45/52

    摘要: The invention relates to a method for preparing acrolein from glycerol, according to which a dehydration of glycerol is carried out in the presence of a MWOA catalyst, MWO representing a mixture of simple oxides and/or of mixed oxides of tungsten and at least one metal M selected from zirconium, silicon, titanium, aluminum, and yttrium, and A represents one or more Lewis bases, one of said Lewis bases having the formula B(R1)p(R2)q(R3)r, B being an element selected from C, S, P, O, N, B and the halides, R1, R2 and R3 represent, independently of one another, H, a C1-C6 alkyl group, O, OH or OR, R representing a C1-C6 alkyl group, and the sum of p, q and r varies from 0 to 4.

    摘要翻译: 本公开涉及从甘油制备丙烯醛的方法,根据该方法,甘油的脱水在催化剂MWOA的存在下进行,其中MWO表示钨和至少一种金属的简单氧化物和/或混合氧化物的混合物 M选自锆,硅,钛,铝和钇,A表示一个或多个路易斯碱,一个所述路易斯碱为式B(R1)p(R2)q(R3)r,其中B为 选自C,S,P,O,N和卤素的元素,R 1,R 2和R 3彼此独立地表示H,C 1 -C 6烷基,O,OH或OR,其中R表示C 1 -C 6烷基 组,p,q和r的和从0变化到4。

    PROCÉDÉ DE PRÉPARATION D'ANALOGUES DE LA MÉTHIONINE

    公开(公告)号:EP3405452A1

    公开(公告)日:2018-11-28

    申请号:EP17706536.4

    申请日:2017-01-17

    摘要: The invention relates to a method for preparing a compound (I) or one of the salts thereof, and the uses of said method, R
    1 OOC-C(=X)-CHR
    2 R
    3 (I), wherein X is selected among O; N-R', wherein R' is H or a C1-C6 alkyl; and N-OR'' wherein R'' is H, or a C1-C6 alkyl or an alkylaryl; R
    1 is H or a C1-C6 alkyl group; R
    2 is H, a C1-C6 alkyl, or an alkylaryl; and R
    3 is CH
    2 SR
    4 or CH
    2 SeR
    4 , where R
    4 is H or a C1-C6 alkyl from a compound (II), or one of the salts thereof, R
    1 OOC-C(=X)-CHR
    2 R
    5 and R
    5 is H or COOR
    6 , where R
    6 is H or a C1-C6 alkyl, said method being carried out in the presence of a compound (III) CH
    2 (Y)(Z). Wherein Y is H; OR
    7 , where R
    7 is H, a C1-C6 alkyl or an acyl with formula CO-R
    4 ; SR
    4 or SeR
    4 where R
    4 matches the preceding definition; or 1 NR
    8 R
    9 , where R
    8 and R
    9 , identical or different, each or together are a C1-C6 alkyl, or an alkylaryl; Z, identical or different to Y, is OR
    10 where R
    10 is H, a C1-C6 alkyl or CO-R
    4 ; a cyclic or acyclic N(COR
    4 )(COR
    4 ) group; or NR
    11 R
    12 , where R
    11 and R
    12 , identical or different, each or together are a C1-C6 alkyl or an alkylaryl; wherein Y and Z together are =O; said method involving an intermediate product (IV) R
    1 OOC-C(=X)-CHR
    2 -CH
    2 Z.

    PROCEDE DE PURIFICATION DE L ACROLEINE
    7.
    发明公开
    PROCEDE DE PURIFICATION DE L ACROLEINE 有权
    清理方法丙烯醛

    公开(公告)号:EP1474374A1

    公开(公告)日:2004-11-10

    申请号:EP03739531.6

    申请日:2003-02-12

    摘要: The invention relates to a continuous method for the purification of acrolein, wherein: an aqueous acrolein solution is supplied, devoid of gas which is difficult to condense, in a distillation column fitted with at least one boiler at the base thereof and with at least one condenser at the head thereof; a mixture which essentially contains water is drawn off at the base of the distillation column; a mixture which essentially contains acrolein and water is drawn off at the head of the distillation column; the mixture drawn off from the head of the distillation column is cooled in the condenser to a temperature enabling an aqueous condensate to be obtained, in addition to a substantial amount of a gaseous mixture which is rich in acrolein; the purified acrolein is isolated in the gaseous mixture which is rich in acrolein.