Process for preparing cyclohexanol and cyclohexanone by cyclohexane oxidation

    公开(公告)号:US09150481B2

    公开(公告)日:2015-10-06

    申请号:US14381206

    申请日:2012-05-17

    申请人: Zaosheng Xiao

    发明人: Zaosheng Xiao

    摘要: A process for preparing cyclohexanol and cyclohexanone by cyclohexane oxidation, includes steps of: firstly processing uncatalyzed oxidation on cyclohexane by molecular oxygen, in such a manner that an oxidized mixture with cyclohexyl hydrogen peroxide serving as a primary product is generated; then decomposing the cyclohexyl hydrogen peroxide to produce cyclohexanol and cyclohexanone; and then distilling to obtain a cyclohexanol product and a cyclohexanone product, wherein the step decomposing the cyclohexyl hydrogen peroxide utilizes a three-step decomposition process including steps of: (1) performing the homogeneous catalytic decomposition by utilizing the bis(tert-butyl)chromate as a catalyst; (2) performing the heterogeneous catalytic decomposition of the sodium hydroxide alkaline aqueous solution under low alkalinity; and (3) performing the heterogeneous catalytic decomposition of the sodium hydroxide alkaline aqueous solution under high alkalinity.

    METHOD AND SYNTHESIS OF INITIATORS FOR TELECHELIC POLYISOBUTYLENES
    2.
    发明申请
    METHOD AND SYNTHESIS OF INITIATORS FOR TELECHELIC POLYISOBUTYLENES 审中-公开
    电纺聚对苯二甲酸乙二酯的方法与合成

    公开(公告)号:US20130281742A1

    公开(公告)日:2013-10-24

    申请号:US13977941

    申请日:2011-12-30

    IPC分类号: C07C41/01

    摘要: A new methodology for the synthesis of a novel difunctional- and a known trifunctional initiator, i.e., 1,3-di(2-methoxy-2-propyl)-5-isopropyl benzene and 1,3,5-tri(2-methoxy-2-propyl)benzene, respectively, for the preparation of di- and tri-telechelic polyisobutylenes. The synthesis proceeds in three steps: 1) catalytic peroxidation of 1,3,5-triisopropylbenzene, 2) reduction of the peroxides to the corresponding alcohols, and 3) methylation of the alcohols. By controlling the conversion of the key peroxidation step the relative ratio of di- and tri-functional intermediates can be controlled. By the use of the 1,3-di(2-methoxy-2-propyl)-5-isopropyl-benzene, well-defined di-methoxy telechelic polyisobutylenes can be synthesized. Although the overall combined yield of the two initiators was only 14-20%, because of the low cost of the starting material, reagents used, and simple manipulations these compounds represent the most cost effective initiators to-date for the preparation of telechelic polyisobutylenes.

    摘要翻译: 用于合成新的双官能和已知三官能引发剂的新方法,即1,3-二(2-甲氧基-2-丙基)-5-异丙基苯和1,3,5-三(2-甲氧基 -2-丙基)苯,用于制备二 - 和三 - 遥爪聚异丁烯。 合成分三个步骤进行:1)1,3,5-三异丙基苯的催化过氧化,2)过氧化物还原成相应的醇,3)醇的甲基化。 通过控制关键过氧化步骤的转化,可以控制二官能和三官能中间体的相对比例。 通过使用1,3-二(2-甲氧基-2-丙基)-5-异丙基苯,可以合成明确定义的二甲氧基遥爪聚异丁烯。 尽管两种引发剂的总体组合产率仅为14-20%,但是由于原料成本低,使用的试剂和简单的操作,这些化合物代表了迄今为止制备遥爪聚异丁烯的成本最高的引发剂。

    PROCESS FOR PRODUCING METHANOL
    4.
    发明申请
    PROCESS FOR PRODUCING METHANOL 有权
    生产甲醇的方法

    公开(公告)号:US20120283340A1

    公开(公告)日:2012-11-08

    申请号:US13501476

    申请日:2010-10-14

    IPC分类号: C07C29/151 C07C31/04

    摘要: The present invention relates to a novel process for the production of methanol. The process comprises the heterolytic cleavage of hydrogen by a frustrated Lewis pair comprising a Lewis acid and a Lewis base; and the hydrogenation of CO2 with the heterolytically cleaved hydrogen to form methanol.

    摘要翻译: 本发明涉及一种生产甲醇的新方法。 该方法包括由包含路易斯酸和路易斯碱的失败的路易斯对对氢的异裂解; 和用异源裂解的氢气氢化形成甲醇。

    Production of Methanol and Ethanol from CO or CO2
    6.
    发明申请
    Production of Methanol and Ethanol from CO or CO2 有权
    从CO或CO2生产甲醇和乙醇

    公开(公告)号:US20140243435A1

    公开(公告)日:2014-08-28

    申请号:US13774475

    申请日:2013-02-22

    IPC分类号: C07C29/157

    摘要: This invention relates to a process for making methanol and ethanol from carbon dioxide and hydrogen. The process includes contacting a mixture of carbon dioxide and hydrogen with a catalyst system containing a ruthenium compound—and optionally, a chloride or bromide-containing compound—dispersed in a low-melting tetraorganophosphonium chloride or bromide salt under conditions effective to produce methanol and ethanol. The invention also relates to a process for making methanol and ethanol from carbon monoxide and water using the same catalyst system.

    摘要翻译: 本发明涉及从二氧化碳和氢气制备甲醇和乙醇的方法。 该方法包括在有效产生甲醇和乙醇的条件下,将二氧化碳和氢气的混合物与含有钌化合物的催化剂体系和任选的分散在低熔点四氯化鏻氯化物或溴化物盐中的含氯化物或溴化物的化合物接触 。 本发明还涉及使用相同的催化剂体系从一氧化碳和水制造甲醇和乙醇的方法。