Method of making mesitylene
    4.
    发明授权
    Method of making mesitylene 失效
    制备均三甲苯的方法

    公开(公告)号:US5087781A

    公开(公告)日:1992-02-11

    申请号:US710843

    申请日:1991-06-06

    CPC classification number: B01J23/20 C07C1/2074 C07C2521/08 C07C2523/20

    Abstract: Mesitylene (1,3,5 trimethylbenzene) is made by passing acetone in the vapor phase over a niobium catalyst. The catalyst is preferably made by impregnating a silica support with 2% niobium by weight and calcining for about 18 hours at about 550.degree. C. 70% selectivity is obtained at 60-80% by weight conversion.

    Abstract translation: 通过使丙酮在气相中通过铌催化剂制备均三甲苯(1,3,5三甲苯)。 催化剂优选通过以2重量%的铌浸渍二氧化硅载体并在约550℃下煅烧约18小时来制备。在60-80重量%的转化率下获得70%的选择性。

    Process for aldol condensation
    5.
    发明授权
    Process for aldol condensation 失效
    醛醇缩合方法

    公开(公告)号:US5055620A

    公开(公告)日:1991-10-08

    申请号:US576909

    申请日:1990-09-04

    Inventor: Alain A. Schutz

    CPC classification number: B01J37/0045 B01J21/10 B01J21/16 C07C45/74 B01J23/007

    Abstract: Basic mixed oxides useful for base catalyzed reactions such as the aldol condensation of acetone and also useful as catalyst supports are made by mixing an acid such as nitric acid or acetic acid with a pseudoboehmite to form a gel, adding magnesium oxide or hydroxide, in a ratio of magnesium to aluminum of about 1:1 to about 10:1, agitating and heating for about 1 to 24 hours, and subsequently drying and calcining. The resulting polymorphic magnesium-aluminum oxide composition is hightly effective in the aldol condensation of acetone to isophorone, and other base catalyzed reactions such as isomerization of olefins, aldol condensation of aldehydes.

    Abstract translation: 用于碱催化反应的碱性混合氧化物,例如丙酮的醛醇缩合并且也可用作催化剂载体,通过将酸例如硝酸或乙酸与假勃姆石混合以形成凝胶,在氧化镁或氢氧化物中加入氧化镁或氢氧化物 镁与铝的比例为约1:1至约10:1,搅拌加热约1-24小时,随后干燥和煅烧。 所得到的多晶型镁 - 铝氧化物组合物在丙酮与异佛尔酮的醛醇缩合中以及其它碱催化反应如烯烃的异构化,醛的醛醇缩合具有很高的有效性。

    Basic mixed oxide
    8.
    发明授权
    Basic mixed oxide 失效
    基本混合氧化物

    公开(公告)号:US4970191A

    公开(公告)日:1990-11-13

    申请号:US339745

    申请日:1989-04-18

    Inventor: Alain A. Schutz

    CPC classification number: B01J37/0045 B01J21/10 B01J21/16 C07C45/74 B01J23/007

    Abstract: Basic mixed oxides useful for base catalyzed reactions such as the aldol condensation of acetone and also useful as catalyst supports are made by mixing an acid such as nitric acid or acetic acid with a pseudob oehmite to form a gel, adding magnesium oxide or hydroxide, in a ratio of magnesium to aluminum of about 1:1 to about 10:1, agitating and heating for about 1 to 24 hours, and subsequently drying and calcining. The resulting polymorphic magnesium-aluminum oxide composition is highly effective in the aldol condensation of acetone to isophorone, and other base catalyzed reactions such as isomerization of olefins, aldol condensation of aldehydes.

    Abstract translation: 用于碱催化反应的碱性混合氧化物,例如丙酮的醛醇缩合,也可用作催化剂载体,通过将酸例如硝酸或乙酸与假勃姆石混合来形成凝胶,将氧化镁或氢氧化物加入到 镁与铝的比例为约1:1至约10:1,搅拌加热约1-24小时,随后干燥和煅烧。 所得到的多晶型镁 - 铝氧化物组合物在丙酮与异佛尔酮的醛醇缩合和其它碱催化反应如烯烃异构化,醛醛醛缩合中是非常有效的。

Patent Agency Ranking