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    Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts
    2.
    发明授权
    Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts 失效
    水合铌氧化物和水合氧化钽催化剂，它们的制备和使用这些催化剂制备N-烷基化苯胺的方法

    公开(公告)号：US5593936A

    公开(公告)日：1997-01-14

    申请号：US410466

    申请日：1995-03-24

    申请人： Volker Glock ,  Ursula Pentling ,  Bernd Pennemann ,  Joerg-Dietrich Jentsch ,  Eberhard Zirngiebl ,  Horst Koller

    发明人： Volker Glock ,  Ursula Pentling ,  Bernd Pennemann ,  Joerg-Dietrich Jentsch ,  Eberhard Zirngiebl ,  Horst Koller

    IPC分类号： B01J23/20 ,  B01J35/10 ,  C07C209/18 ,  C07C211/48

    CPC分类号： B01J23/20 ,  B01J35/108 ,  C07C209/18

    摘要： New hydrated niobium oxide and hydrated tantalum oxide catalysts containing pores having diameters in the range from 0.4 to 10,000 nm are characterized in that the volume of the pores of the catalyst having a diameter of from 100 to 1000 nm is at least 30% of the total pore volume of the catalyst. The catalysts can be prepared by mixing hydrated niobium oxide or hydrated tantalum oxide with an inert solid and converting this mixture into a solid pellet form, with the pressure in the apparatus for preparing catalysts in pellet form being set in such a way that the volume of the pores of the catalyst having a diameter of from 100 to 1000 nm is at least 30% of the total pore volume of the catalyst. Such catalysts are particularly suitable for preparing N-alkylanilines from anilines and alkanols.

    摘要翻译： 新型水合铌氧化物和含有直径在0.4至10,000nm范围内的孔的水合氧化钽催化剂的特征在于直径为100至1000nm的催化剂的孔的体积至少为总量的30％ 催化剂的孔体积。 催化剂可以通过将水合铌氧化物或水合氧化钽与惰性固体混合并将该混合物转化为固体颗粒形式来制备，其中用于制备颗粒形式的催化剂的装置中的压力设定为使得 直径为100〜1000nm的催化剂的孔隙为催化剂总孔体积的至少30％。 这种催化剂特别适用于从苯胺和链烷醇制备N-烷基苯胺。

    Process for preparing succinic anhydride
    4.
    发明授权
    Process for preparing succinic anhydride 失效
    制备琥珀酸酐的方法

    公开(公告)号：US5616730A

    公开(公告)日：1997-04-01

    申请号：US468586

    申请日：1995-06-06

    申请人： Joerg-Dietrich Jentsch ,  Georg Martin ,  Eberhard Zirngiebl

    发明人： Joerg-Dietrich Jentsch ,  Georg Martin ,  Eberhard Zirngiebl

    IPC分类号： C07D307/60 ,  B01J25/02 ,  C07B61/00 ,  C07C51/567

    CPC分类号： C07C51/567

    摘要： Succinic anhydride (SA) can be prepared by catalytic hydrogenation of maleic anhydride (MA) with hydrogen in the liquid phase, by reacting a starting material composed of from 5 to 100% by weight of MA and from 95 to 0% by weight of SA, based on the total weight of MA and SA, at from 120.degree. to 150.degree. C. and a H.sub.2 pressure of from 10 to 150 bar over a Raney skeleton catalyst or a platinum group metal catalyst.

    摘要翻译： 琥珀酸酐（SA）可以通过马来酸酐（MA）与氢气在液相中的催化氢化，通过使由5〜100重量％的MA和95〜0重量％的SA组成的原料反应来制备 基于MA和SA的总重量，在120-150℃下，在阮内骨架催化剂或铂族金属催化剂上的H 2压力为10至150巴。