Supported catalysts containing a platinum metal and process for preparing diaryl carbonates
    2.
    发明授权
    Supported catalysts containing a platinum metal and process for preparing diaryl carbonates 失效
    含铂金属的载体催化剂和制备碳酸二芳基酯的方法

    公开(公告)号:US06548445B1

    公开(公告)日:2003-04-15

    申请号:US08625613

    申请日:1996-03-29

    IPC分类号: B01J2713

    摘要: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.

    摘要翻译: 在使用铂金属催化剂和助催化剂的季盐和碱的存在下,由芳族羟基化合物,CO和O 2制备芳香族碳酸酯的方法中,有利地由负载型催化剂制成, 状态,(i)铂金属,铂金属卤化物或铂金属卤化物络合物和(ii)作为IB,IIB,IIIA,IIIB,IVA,IVB,VB,VIB,VIIB族的助催化剂的金属化合物, 元素周期表(Mendeleev)的铁族(原子数26-28)或稀土金属(原子数58-71),其量为0.01-15%(重量),以金属计算,基于 催化剂的总重量。

    Method for hydrogenating aromatic polymers in the presence of special catalysts
    5.
    发明授权
    Method for hydrogenating aromatic polymers in the presence of special catalysts 失效
    在特殊催化剂存在下氢化芳族聚合物的方法

    公开(公告)号:US06509510B1

    公开(公告)日:2003-01-21

    申请号:US09743870

    申请日:2001-01-16

    IPC分类号: C07C510

    CPC分类号: C08F8/04

    摘要: Process for hydrogenating aromatic polymers in the presence of catalysts, wherein a metal or mixture of metals from group VIII of the Periodic Table together with a support of silicon dioxide, aluminium dioxide or a mixture thereof is used as the catalyst, and the catalyst pore volume defined by pores of diameters between 100 and 1000 Å, measured by mercury porosimetry, is generally from 100 to 15%, in relation to the total pore volume, measured by mercury porosimetry.

    摘要翻译: 在催化剂存在下氢化芳族聚合物的方法,其中使用周期表第VIII族的金属或金属混合物以及二氧化硅,二氧化铝或其混合物的载体作为催化剂,催化剂孔体积 由通过水银孔率法测量的直径在100和1000埃之间的孔限定,相对于通过水银孔率法测量的总孔体积通常为100至15%。

    Hydrated niobium oxide and hydrated tantalum oxide catalysts, their
preparation and a process for preparing N-alkylated anilines using
these catalysts
    6.
    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

    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。