METHOD OF FORMING A DIANHYDROSUGAR ALCOHOL
    11.
    发明申请
    METHOD OF FORMING A DIANHYDROSUGAR ALCOHOL 审中-公开
    形成二氢化AR醇的方法

    公开(公告)号:WO2007089527A3

    公开(公告)日:2008-01-17

    申请号:PCT/US2007001996

    申请日:2007-01-25

    CPC classification number: C07D307/20 C07D493/04 Y02P20/127

    Abstract: The invention includes methods of producing dianhydrosugars. A polyol is reacted in the presence of a first catalyst to form a monocyclic sugar. The monocyclic sugar is transferred to a second reactor where it is converted to a dianhydrosugar alcohol in the presence of a second catalyst. The invention includes a process of forming isosorbide. An initial reaction is conducted at a first temperature in the presence of a solid acid catalyst. The initial reaction involves reacting sorbitol to produce 1,4-sorbitan, 3,6-sorbitan, 2,5-mannitan and 2,5-iditan. Utilizing a second temperature, the 1,4-sorbitan and 3,6-sorbitan are converted to isosorbide. The invention includes a method of purifying isosorbide from a mixture containing isosorbide and at least one additional component. A first distillation removes a first portion of the isosorbide from the mixture. A second distillation is then conducted at a higher temperature to remove a second portion of isosorbide from the mixture.

    Abstract translation: 本发明包括生产二脱水甘油糖的方法。 多元醇在第一催化剂存在下反应形成单环糖。 将单环糖转移到第二反应器中,在第二反应器中,在第二催化剂的存在下将其转化为二脱水甘油醇。 本发明包括形成异山梨醇的方法。 在固体酸催化剂存在下,在第一温度下进行初始反应。 初始反应包括使山梨醇反应生成1,4-脱水山梨糖醇,3,6-脱水山梨糖醇,2,5-甘露聚糖和2,5-己烷。 利用第二温度,将1,4-脱水山梨醇和3,6-脱水山梨醇转化为异山梨醇。 本发明包括从含有异山梨醇和至少一种另外的组分的混合物中纯化异山梨醇的方法。 第一蒸馏从混合物中除去第一部分的异山梨醇。 然后在较高温度下进行第二次蒸馏以从混合物中除去第二部分的异山梨醇。

    CONVERTING SUGARS TO SUGAR ALCOHOLS BY AQUEOUS PHASE CATALYTIC HYDROGENATION
    18.
    发明申请
    CONVERTING SUGARS TO SUGAR ALCOHOLS BY AQUEOUS PHASE CATALYTIC HYDROGENATION 审中-公开
    通过水性相催化氢化将糖转化成酒精

    公开(公告)号:WO02088057B1

    公开(公告)日:2003-01-16

    申请号:PCT/US0211614

    申请日:2002-04-10

    CPC classification number: C07C29/141 B01J21/063 B01J23/462 C07C31/26

    Abstract: The present invention provides a method of converting sugars to their corresponding sugar alcohols by catalytic hydrogenation in the aqueous phase. It has been found that surprisingly superior results can be obtained by utilizing a relatively low temperature (less than 120°C), selected by hydrogenation conditions, and a hydrothermally stable catalyst. These results include excellent sugar conversion to the desired sugar alcohol, in combination with long life under hydrothermal conditions.

    Abstract translation: 本发明提供了通过在水相中催化氢化将糖转化成其相应的糖醇的方法。 已经发现,通过利用通过氢化条件选择的相对低的温度(小于120℃)和水热稳定的催化剂,可以获得令人惊讶的优异的结果。 这些结果包括优异的糖转化为所需的糖醇,并结合在水热条件下的长寿命。

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