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    • 4. 发明授权
    • Acid catalyst with a sulfated zirconia base and its uses
    • 具有硫酸化氧化锆基体的酸催化剂及其用途
    • US06448198B1
    • 2002-09-10
    • US09613585
    • 2000-07-10
    • Georges SzaboPedro NascimentoAlain MilanSebastien DeckerJoeri DenayerJean-Pierre Dath
    • Georges SzaboPedro NascimentoAlain MilanSebastien DeckerJoeri DenayerJean-Pierre Dath
    • B01J27053
    • B01J21/066B01J27/053B01J37/0009
    • The invention relates to an acid catalyst containing a substantial quantity of supported or mass sulfated zirconia and at least one hydrogenating transition metal. This catalyst is characterized by the fact that the sulfated zirconia is in crystallized form and that it shows a specific surface area greater than or equal to 135 m2/g, a pore volume greater than or equal to 0.16 cm3/g and an average pore diameter greater than or equal to 20 Angstroms (20×10−10 m). The invention also relates to methods of making this catalyst and to the uses of this catalyst in hydrocarbon transformation chemical reactions requiring the use of an acid type catalyst, such as for example, isomerization, alkylation, oligomerization reactions or even light hydrocarbon dehydration reactions, and also heavier hydrocarbon hydrocracking and hydroisomerization reactions. In a preferred embodiment of the method of the present invention, a hydrated zirconia gel is washed with a soluble polar organic solvent (other than water). In accordance with the method including this washing step, a solid acid catalyst containing pure mass sulfated zirconia in a crystallized form has a surface area greater than or equal to 150 m2/g, a pore volume greater than or equal to 0.2 cm3/g, and more preferably greater than or equal to 0.25 cm3/g, and an average pore diameter greater than or equal to 20 Angstroms (20×10−10 m) and preferably greater than or equal to 30 Angstroms (30×10−10 m).
    • 本发明涉及含有大量负载或大量硫酸化氧化锆和至少一种氢化过渡金属的酸催化剂。 该催化剂的特征在于硫酸化氧化锆是结晶形式,并且其表现出大于或等于135m 2 / g的比表面积,大于或等于0.16cm 3 / g的孔体积和平均孔径 大于或等于20埃(20x10-10米)。 本发明还涉及制备该催化剂的方法以及该催化剂在需要使用酸型催化剂的烃转化化学反应中的用途,例如异构化,烷基化,低聚反应或甚至轻质烃脱水反应,以及 还有较重的烃加氢裂化和加氢异构化反应。 在本发明方法的优选实施方案中,用可溶性极性有机溶剂(水除外)洗涤水合氧化锆凝胶。 根据包括该洗涤步骤的方法,含有结晶形式的纯质量硫酸化氧化锆的固体酸催化剂具有大于或等于150m 2 / g的表面积,大于或等于0.2cm 3 / g的孔体积, 更优选大于或等于0.25cm 3 / g,平均孔径大于或等于20埃(20×10 -10 m),优选大于或等于30埃(30×10 -10 m)。