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46 条记录 (耗时 0.02 秒)

    Methods for dehydration of sugars and sugar alcohols
    24.
    发明授权
    Methods for dehydration of sugars and sugar alcohols 有权
    糖和糖醇脱水的方法

    公开(公告)号：US07772412B2

    公开(公告)日：2010-08-10

    申请号：US11341968

    申请日：2006-01-26

    申请人： Johnathan E. Holladay ,  Jianli Hu ,  Xinjie Zhang ,  Yong Wang

    发明人： Johnathan E. Holladay ,  Jianli Hu ,  Xinjie Zhang ,  Yong Wang

    IPC分类号： A61K31/34 ,  C07D493/04

    CPC分类号： C07D493/04

    摘要： The invention includes a method of dehydration of a sugar using a dehydration catalyst and a co-catalyst within a reactor. A sugar is introduced and H2 is flowed through the reactor at a pressure of less than or equal to about 300 psig to convert at least some of the sugar into an anhydrosugar product. The invention includes a process for producing isosorbide. A starting material comprising sorbitol is flowed into a reactor. H2 is counter flowed through the reactor. The starting material is exposed to a catalyst in the presence of a co-catalyst which comprises at least one metal. The exposing is conducted at a hydrogen pressure of less than or equal to 300 psig within the reactor and the hydrogen removes at least some of any water present during the exposing and inhibits formation of colored byproducts.

    摘要翻译： 本发明包括使用反应器内的脱水催化剂和助催化剂使糖脱水的方法。 引入糖并且H2以小于或等于约300psig的压力流过反应器，以将至少一些糖转化为脱水糖产品。 本发明包括制备异山梨醇的方法。 将含有山梨醇的原料流入反应器。 H2反向流过反应器。 在包含至少一种金属的助催化剂的存在下，将原料暴露于催化剂。 暴露在反应器内在小于或等于300psig的氢气压力下进行，并且氢去除暴露期间存在的任何水中的至少一些，并且抑制着色副产物的形成。

    Two-stage dehydration of sugars
    26.
    发明授权
    Two-stage dehydration of sugars 有权
    糖两步脱水

    公开(公告)号：US07615652B2

    公开(公告)日：2009-11-10

    申请号：US11341930

    申请日：2006-01-26

    申请人： Johnathan E. Holladay ,  Jianli Hu ,  Yong Wang ,  Todd A. Werpy

    发明人： Johnathan E. Holladay ,  Jianli Hu ,  Yong Wang ,  Todd A. Werpy

    IPC分类号： C07C29/00 ,  C07D315/00 ,  C07D493/00 ,  C07H1/00 ,  C07H17/00 ,  C07H5/04 ,  C07H1/06 ,  C13K5/00

    CPC分类号： C07D493/04

    摘要： The invention includes methods for producing dianhydrosugar alcohol by providing an acid catalyst within a reactor and passing a starting material through the reactor at a first temperature. At least a portion of the staring material is converted to a monoanhydrosugar isomer during the passing through the column. The monoanhydrosugar is subjected to a second temperature which is greater than the first to produce a dianhydrosugar. The invention includes a method of producing isosorbide. An initial feed stream containing sorbitol is fed into a continuous reactor containing an acid catalyst at a temperature of less than 120° C. The residence time for the reactor is less than or equal to about 30 minutes. Sorbitol converted to 1,4-sorbitan in the continuous reactor is subsequently provided to a second reactor and is dehydrated at a temperature of at least 120° C. to produce isosorbide.

    摘要翻译： 本发明包括通过在反应器内提供酸催化剂并使原料在第一温度下通过反应器来生产二脱水甘油的方法。 在通过色谱柱期间，至少一部分起始物质被转化为单一脱氢葡萄糖异构体。 单糖酐经受大于第一温度的第二温度以产生二脱水糖。 本发明包括一种生产异山梨醇的方法。 含有山梨醇的初始进料流在小于120℃的温度下进料到含有酸催化剂的连续反应器中。反应器的停留时间小于或等于约30分钟。 随后将连续反应器中转化为1,4-脱水山梨醇的山梨糖醇提供给第二反应器，并在至少120℃的温度下脱水以制备异山梨醇。

    Methods for dehydration of sugars
    28.
    发明申请
    Methods for dehydration of sugars 有权
    糖脱水方法

    公开(公告)号：US20070173654A1

    公开(公告)日：2007-07-26

    申请号：US11341968

    申请日：2006-01-26

    申请人： Johnathan Holladay ,  Jianli Hu ,  Xinjie Zhang ,  Yong Wang

    发明人： Johnathan Holladay ,  Jianli Hu ,  Xinjie Zhang ,  Yong Wang

    IPC分类号： C07D493/02

    CPC分类号： C07D493/04

    摘要： The invention includes a method of dehydration of a sugar using a dehydration catalyst and a co-catalyst within a reactor. A sugar is introduced and H2 is flowed through the reactor at a pressure of less than or equal to about 300 psig to convert at least some of the sugar into an anhydrosugar product. The invention includes a process for producing isosorbide. A starting material comprising sorbitol is flowed into a reactor. H2 is counter flowed through the reactor. The starting material is exposed to a catalyst in the presence of a co-catalyst which comprises at least one metal. The exposing is conducted at a hydrogen pressure of less than or equal to 300 psig within the reactor and the hydrogen removes at least some of any water present during the exposing and inhibits formation of colored byproducts.

    摘要翻译： 本发明包括使用反应器内的脱水催化剂和助催化剂使糖脱水的方法。 引入糖，并且H 2 O 2以小于或等于约300psig的压力流过反应器，以将至少一些糖转化为脱水糖产物。 本发明包括制备异山梨醇的方法。 将含有山梨醇的原料流入反应器。 H 2反向流过反应器。 在包含至少一种金属的助催化剂的存在下，将原料暴露于催化剂。 暴露在反应器内在小于或等于300psig的氢气压力下进行，并且氢去除暴露期间存在的任何水中的至少一些，并且抑制着色副产物的形成。

    Dimethyl ether production from methanol and/or syngas
    29.
    发明申请
    Dimethyl ether production from methanol and/or syngas 有权
    由甲醇和/或合成气生产二甲醚

    公开(公告)号：US20070078285A1

    公开(公告)日：2007-04-05

    申请号：US11241321

    申请日：2005-09-30

    申请人： Robert Dagle ,  Yong Wang ,  Eddie Baker ,  Jianli Hu

    发明人： Robert Dagle ,  Yong Wang ,  Eddie Baker ,  Jianli Hu

    IPC分类号： C07C41/09

    CPC分类号： C07C41/09 ,  C07C41/01 ,  C07C43/043

    摘要： Disclosed are methods for producing dimethyl ether (DME) from methanol and for producing DME directly from syngas, such as syngas from biomass. Also disclosed are apparatus for DME production. The disclosed processes generally function at higher temperatures with lower contact times and at lower pressures than conventional processes so as to produce higher DME yields than do conventional processes. Certain embodiments of the processes are carried out in reactors providing greater surface to volume ratios than the presently used DME reactors. Certain embodiments of the processes are carried out in systems comprising multiple microchannel reactors.

    摘要翻译： 公开了从甲醇生产二甲醚（DME）并直接从合成气生产DME的方法，例如来自生物质的合成气。 还公开了用于DME生产的装置。 所公开的方法通常在比常规方法更低的接触时间和更低的压力的较高温度下起作用，以产生比常规方法更高的DME产率。 该方法的某些实施方案在提供比目前使用的DME反应器更大的表面与体积比的反应器中进行。 该方法的某些实施方案在包括多个微通道反应器的系统中进行。