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公开(公告)号:US5447898A
公开(公告)日:1995-09-05
申请号:US306039
申请日:1994-09-14
IPC分类号: B01J21/06 , B01J23/75 , B01J32/00 , B01J35/02 , B01J35/10 , B01J37/00 , B01J37/03 , C01G25/02 , C04B35/624 , C07B61/00 , C07C1/04 , C07C53/10 , C07C53/122 , C10G2/00
CPC分类号: B01J23/75 , B01J21/066 , C01G25/02 , C04B35/624 , C07C53/10 , C07C53/122 , B01J35/1014 , B01J35/1038 , B01J35/1076 , B01J37/0009 , B01J37/036 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/90
摘要: A process for the preparation of a zirconia precursor comprises contacting a solution of an acidic zirconium compound with a solution of a basic zirconium compound to form a gel. A shapable dough may be formed by rendering the zirconia precursor shapable, for example by drying the zirconia precursor or combining the zirconia precursor with a solid filler. The shapable dough may be shaped, for example by extrusion, to form a shaped zirconia precursor, which in turn may be dried and calcined to form shaped zirconia particles. The shapable dough may be prepared so as to comprise a source for a catalytically active component, in which case the shaped zirconia particles may be used directly as a catalyst. A source of a catalytically active component may be deposited on the shaped zirconia particles to yield a finished catalyst.
摘要翻译: 制备氧化锆前体的方法包括使酸性锆化合物的溶液与碱性锆化合物的溶液接触以形成凝胶。 可以通过使氧化锆前体可成形来形成可成形的面团,例如通过干燥氧化锆前体或将氧化锆前体与固体填料结合。 可成形面团可以例如通过挤出成型,以形成成形的氧化锆前体,其又可以被干燥和煅烧以形成成形的氧化锆颗粒。 可成型的面团可以制备成包含催化活性组分的源,在这种情况下,成形的氧化锆颗粒可以直接用作催化剂。 可以将催化活性组分的源沉积在成形的氧化锆颗粒上以产生成品催化剂。