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公开(公告)号:US4154812A
公开(公告)日:1979-05-15
申请号:US781393
申请日:1977-03-25
申请人: Moises G. Sanchez , Norman R. Laine
发明人: Moises G. Sanchez , Norman R. Laine
CPC分类号: B01J21/04 , B01J35/10 , C01F7/021 , C01F7/34 , B01J35/1019 , B01J35/1042 , B01J35/1061 , B01J35/1085 , C01P2002/60 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C01P2006/11 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/17 , C01P2006/21 , C01P2006/22
摘要: An alumina composition comprising a microcrystalline boehmite-pseudoboehmite intermediate having from about 70 to about 85 weight percent of the total amount of Al.sub.2 O.sub.3 present in crystalline form. The composition is prepared by adding aluminum sulfate and sodium aluminate solutions to a mixture of water and aluminum sulfate solution to precipitate alumina and adjusting the pH to a pH higher than the precipitation pH. The reactant concentrations, and rates of addition, temperatures, and pH's in the precipitation are specifically controlled to form the boehmite-pseudoboehmite intermediate.
摘要翻译: 一种氧化铝组合物,其包含以结晶形式存在的Al 2 O 3总量的约70至约85重量%的微晶勃姆石 - 假勃姆石中间体。 通过将硫酸铝和铝酸钠溶液加入到水和硫酸铝溶液的混合物中以沉淀氧化铝并将pH调节至高于沉淀pH的pH来制备组合物。 特异性地控制反应物浓度以及沉淀速率,温度和pH值以形成勃姆石 - 假勃姆石中间体。