Integrated process for preparing a carboxylic acid from an alkane
    1.
    发明申请
    Integrated process for preparing a carboxylic acid from an alkane 审中-公开
    从烷烃制备羧酸的综合方法

    公开(公告)号:US20100029975A1

    公开(公告)日:2010-02-04

    申请号:US12459970

    申请日:2009-07-10

    IPC分类号: C07C253/00 C07C51/16

    摘要: The present invention relates to an integrated process for producing unsaturated carboxylic acids from the corresponding C2-C4 alkane. The process begins with integrated catalytic reactions comprising endothermic soft oxidant conversion (SOC) and exothermic selective hydrogen combustion (SHC) which cumulatively convert a C2-C4 alkane to its corresponding C2-C4 alkene in a product stream substantially free of hydrogen. Heat from the exothermic selective hydrogen combustion reaction zone is recovered and recycled back upstream to the endothermic soft oxidant conversion reaction zone. The hydrogen-free alkene products of the thermally integrated SOC/SHC reactions are then provided to a catalytic vapor phase partial oxidation process for conversion of the alkene to the corresponding unsaturated carboxylic acid or nitrile. Unreacted alkene and carbon dioxide are recovered from the oxidation product stream and recycled back to the thermally integrated soft oxidant conversion reactions.

    摘要翻译: 本发明涉及从相应的C 2 -C 4烷烃制备不饱和羧酸的综合方法。 该过程开始于包括吸热软氧化剂转化(SOC)和放热选择性氢燃烧(SHC)的综合催化反应,其在基本上不含氢的产物流中将C 2 -C 4烷烃累加转化成其相应的C 2 -C 4烯烃。 来自放热选择性氢燃烧反应区的热量被回收并循环回到吸热软氧化剂转化反应区的上游。 然后将热集成的SOC / SHC反应的无氢烯烃产物提供到用于将烯烃转化成相应的不饱和羧酸或腈的催化气相部分氧化方法。 从氧化产物流中回收未反应的烯烃和二氧化碳,并循环回热积分的软氧化剂转化反应。

    Hybrid autothermal catalytic process for converting alkanes to alkenes and catalysts useful for same
    2.
    发明申请
    Hybrid autothermal catalytic process for converting alkanes to alkenes and catalysts useful for same 审中-公开
    用于将烷烃转化为烯烃的混合自热催化方法和对其有用的催化剂

    公开(公告)号:US20100030004A1

    公开(公告)日:2010-02-04

    申请号:US12459969

    申请日:2009-07-10

    IPC分类号: C07C5/333

    摘要: The present invention relates to a thermally integrated multi-zone process for conversion of alkanes to their corresponding alkenes, involving endothermically converting an alkane to its corresponding alkene by soft oxidant conversion in an endothermic reaction zone, in the presence of a weak oxidant, a suitable catalyst, and heat, to produce an intermediate product gas comprising the corresponding alkene and hydrogen. The weak oxidant may be, for example, carbon dioxide. The hydrogen is then removed from the intermediate product gas by contacting the intermediate product gas, in an exothermic reaction zone, with different second catalyst, and oxygen, to combust the hydrogen and produce a heated product stream comprising the corresponding alkene, water and heat. Heat is recovered from the heated product stream and recycled back to the endothermic reaction zone, while the resulting cooled product stream comprising the corresponding alkene may be subjected to further reaction and/or processing.

    摘要翻译: 本发明涉及一种用于将烷烃转化成其相应烯烃的热集成多区域方法,包括在弱氧化剂存在下,通过在吸热反应区中的软氧化剂转化将烷烃吸附转化成其相应的烯烃,合适的 催化剂和热,以产生包含相应的烯烃和氢气的中间产物气体。 弱氧化剂可以是例如二氧化碳。 然后通过使中间产物气体,在放热反应区中与不同的第二催化剂和氧气接触,将氢气从中间产物气体中除去,以燃烧氢气并产生包含相应的烯烃,水和热的加热产物流。 从加热的产物流中回收热量并再循环回到吸热反应区,而包含相应烯烃的所得冷却产物流可进行进一步的反应和/或处理。

    Isomerization catalysts
    6.
    发明授权
    Isomerization catalysts 有权
    异构化催化剂

    公开(公告)号:US08343885B2

    公开(公告)日:2013-01-01

    申请号:US12974176

    申请日:2010-12-21

    摘要: Extruded isomerization catalysts comprising MgO, a metal silicate clay binder and a stabilizer and methods of forming such isomerization catalysts are disclosed. Also disclosed are isomerization catalysts that exhibit a fresh isomerization rate and an aged isomerization rate that is at least 50% of the fresh isomerization rate. Embodiments of the isomerization catalysts disclosed herein include metal silicate clay binders that include a layered structure and metal silicate. The metal silicate clay binder may be present in an amount in the range from about 5 wt % to about 20 wt %. Exemplary stabilizers include one or more of ZrO2, tetravalent rare earth metal and a trivalent rare earth metal. Stabilizers may be present in an amount up to about 40 wt %. One or more improved properties, such as piece crush strength and isomerization performance, are exhibited by the catalyst article.

    摘要翻译: 公开了包含MgO,金属硅酸盐粘土粘合剂和稳定剂的挤出异构化催化剂以及形成这种异构化催化剂的方法。 还公开了异构化催化剂,其表现出新鲜异构化速率和老化异构化速率,其为新鲜异构化速率的至少50%。 本文公开的异构化催化剂的实施方案包括包含层状结构和金属硅酸盐的金属硅酸盐粘土粘合剂。 金属硅酸盐粘土粘合剂可以以约5重量%至约20重量%的量存在。 示例性稳定剂包括ZrO 2,四价稀土金属和三价稀土金属中的一种或多种。 稳定剂可以以高达约40重量%的量存在。 催化剂制品表现出一种或多种改进的性能,如碎片强度和异构化性能。

    Isomerization Catalysts
    8.
    发明申请
    Isomerization Catalysts 有权
    异构化催化剂

    公开(公告)号:US20120157294A1

    公开(公告)日:2012-06-21

    申请号:US12974176

    申请日:2010-12-21

    IPC分类号: B01J21/16 B01J37/04

    摘要: Extruded isomerization catalysts comprising MgO, a metal silicate clay binder and a stabilizer and methods of forming such isomerization catalysts are disclosed. Also disclosed are isomerization catalysts that exhibit a fresh isomerization rate and an aged isomerization rate that is at least 50% of the fresh isomerization rate. Embodiments of the isomerization catalysts disclosed herein include metal silicate clay binders that include a layered structure and metal silicate. The metal silicate clay binder may be present in an amount in the range from about 5 wt % to about 20 wt %. Exemplary stabilizers include one or more of ZrO2, tetravalent rare earth metal and a trivalent rare earth metal. Stabilizers may be present in an amount up to about 40 wt %. One or more improved properties, such as piece crush strength and isomerization performance, are exhibited by the catalyst article.

    摘要翻译: 公开了包含MgO,金属硅酸盐粘土粘合剂和稳定剂的挤出异构化催化剂以及形成这种异构化催化剂的方法。 还公开了异构化催化剂,其表现出新鲜异构化速率和老化异构化速率,其为新鲜异构化速率的至少50%。 本文公开的异构化催化剂的实施方案包括包含层状结构和金属硅酸盐的金属硅酸盐粘土粘合剂。 金属硅酸盐粘土粘合剂可以以约5重量%至约20重量%的量存在。 示例性的稳定剂包括一种或多种ZrO 2,四价稀土金属和三价稀土金属。 稳定剂可以以高达约40重量%的量存在。 催化剂制品表现出一种或多种改进的性能,如碎片强度和异构化性能。