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    PROCESS FOR PRODUCING AROMATIC DIHYDROXY COMPOUND
    3.
    发明申请
    PROCESS FOR PRODUCING AROMATIC DIHYDROXY COMPOUND 有权
    生产芳族二羟基化合物的方法

    公开(公告)号：US20160176795A1

    公开(公告)日：2016-06-23

    申请号：US14764344

    申请日：2014-09-11

    Applicant: MITSUI CHEMICALS, INC.

    Inventor： Yuya GOTO ,  Takashi NABETA

    IPC: C07C37/60

    CPC classification number: C07C37/60 ,  B01J29/89 ,  Y02P20/52 ,  C07C39/08

    Abstract: [Problem] To provide a process for producing an aromatic dihydroxy compound, in which a hydroquinone compound is highly selectively produced while suppressing formation of by-products derived from a solvent and maintaining a high yield based on hydrogen peroxide when a phenol compound is allowed to react with hydrogen peroxide. [Solution]A process for producing an aromatic dihydroxy compound, including allowing a phenol compound to react with hydrogen peroxide in the presence of a titanosilicate, a C4-C5 alcohol containing a tertiary or quaternary carbon, and water and/or methanol, the amount of the water and/or methanol being 5 to 90 mass % based on the total mass of the reaction liquid.

    Abstract translation: 本发明提供一种芳香族二羟基化合物的制造方法，其中氢醌化合物被高选择性地制备，同时抑制来自溶剂的副产物的形成，并且当使苯酚化合物被允许时，保持基于过氧化氢的高收率 与过氧化氢反应。 [方案]一种芳族二羟基化合物的制备方法，其包括使苯酚化合物在钛硅酸盐，含有叔或季碳的C 4 -C 5醇和水和/或甲醇的存在下与过氧化氢反应，所述量 的水和/或甲醇为5〜90质量％，基于反应液的总质量。

    Method for hydroxylating phenols and phenol ethers
    7.
    发明申请
    Method for hydroxylating phenols and phenol ethers 有权
    苯酚和苯酚醚的羟基化方法

    公开(公告)号：US20140073818A1

    公开(公告)日：2014-03-13

    申请号：US14118082

    申请日：2012-05-15

    Applicant: Laurent Garel ,  Stephanie Normand ,  Pascal Pitiot ,  Jean-Christophe Bigouraux

    Inventor： Laurent Garel ,  Stephanie Normand ,  Pascal Pitiot ,  Jean-Christophe Bigouraux

    IPC: C07C41/26 ,  C07C37/60

    CPC classification number: C07C41/26 ,  C07C37/60 ,  Y02P20/582 ,  C07C39/08

    Abstract: A method for hydroxylating phenols and phenol ethers using hydrogen peroxide and specifically, a method for hydroxylating phenol using hydrogen peroxide. The method for hydroxylating a phenolic substrate selected from a phenol or a phenol ether by reacting such phenolic substrate with hydrogen peroxide in the presence of an acid catalyst comprises the following steps, implemented consecutively or simultaneously: a first step consisting of mixing a phenolic substrate with a hydrogen peroxide solution under conditions in which the temperature is sufficient for the initial phenolic substrate to remain liquid and for minimizing the conversion rate of the hydrogen peroxide; a second step consisting of carrying out the phenolic substrate hydroxylation reaction under adiabatic conditions, the acid catalyst being added at the mixing stage and/or at the beginning of the hydroxylation reaction; and a third step, if necessary, consisting of recovering the hydroxylated product.

    Abstract translation: 使用过氧化氢使酚和酚醚羟基化的方法，具体地说，使用过氧化氢使苯酚羟基化的方法。 在酸催化剂存在下使这种酚类底物与过氧化氢反应，通过使酚类底物与过氧化氢反应来羟基化选自酚或酚醚的方法包括以下步骤：连续或同时实施：第一步，将酚类底物与 过氧化氢溶液，其中温度足以使初始酚类底物保持液体并使过氧化氢的转化率最小化; 第二步是在绝热条件下进行酚类底物羟基化反应，在混合阶段和/或在羟化反应开始时加入酸催化剂; 如果需要，第三步是回收羟基化产物。

    Method of producing hydroxyl radicals for chemical reactions
    9.
    发明授权
    Method of producing hydroxyl radicals for chemical reactions 有权
    生成化学反应的羟基自由基的方法

    公开(公告)号：US06692632B1

    公开(公告)日：2004-02-17

    申请号：US10069939

    申请日：2002-06-25

    Applicant: David Bremner ,  Arthur Ernest Burgess

    Inventor： David Bremner ,  Arthur Ernest Burgess

    IPC: C25B300

    CPC classification number: C02F1/4672 ,  C02F1/36 ,  C02F1/461 ,  C02F2001/46133 ,  C02F2101/308 ,  C02F2101/363 ,  C02F2101/38 ,  C02F2103/14 ,  C02F2305/026 ,  C07C37/60 ,  C07C39/04

    Abstract: A method of reacting chemicals comprising the exposure of the reactants to ultrasound and electrochemical energies in the presence of a metal or metal salt and hydrogen peroxide. HO* radicals are efficiently formed and react with a carbon-based reactant to form a carbon radical which then reacts with other reactants or may dimerize. The invention regenerates the metal ions and may be performed using no special facilities. Increased product yield was achieved for a number of hydroxylation reactions.

    Abstract translation: 包括在金属或金属盐和过氧化氢的存在下将反应物暴露于超声和电化学能的化学反应的方法。 HO *自由基被有效地形成并与碳基反应物反应形成碳自由基，然后与其它反应物反应或可以二聚化。 本发明再生金属离子，并且可以不使用专门的设备进行。 实现了许多羟化反应的产物产率提高。

    Preparation of phenol and its derivatives
    10.
    发明授权
    Preparation of phenol and its derivatives 失效
    苯酚及其衍生物的制备

    公开(公告)号：US06414197B1

    公开(公告)日：2002-07-02

    申请号：US09078253

    申请日：1998-05-13

    Applicant: Leonid Modestovich Kustov ,  Viktor Ignatyevich Bogdan ,  Vladimir Borisovich Kazansky

    Inventor： Leonid Modestovich Kustov ,  Viktor Ignatyevich Bogdan ,  Vladimir Borisovich Kazansky

    IPC: C07C3902

    CPC classification number: C07C37/60 ,  B01J29/40 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/42 ,  Y02P20/52 ,  C07C39/04 ,  C07C39/27 ,  C07C39/07 ,  C07C39/06

    Abstract: A method and a catalyst are described for selective oxidation of aromatic compounds (e.g., benzene and its derivatives) into hydroxylated aromatic compounds (e.g., corresponding phenols). For example, benzene can be converted into phenol with a yield of at least 30-40%, and a selectivity on the basis of benzene of at least 95-97%. The selectivity for this reaction based on N2O is at least 90-95%. Therefore, no substantial N2O decomposition or consumption for complete benzene oxidation to CO+CO2 or other side products occurs. Similar results are obtained with benzene derivatives (e.g., fluorobenzene, difluorobenzene, phenol), although the selectivity is somewhat lower in the case of derivatives (e.g., about 80-85% in the case of fluorosubstituted benzenes). A preferred catalyst for this process is a composition containing a high-silica pentasil-type zeolite (e.g, an HZSM-5 type zeolite) which contains no purposefully introduced additives such as transition or noble metals. The catalytic effect is achieved by performing a specific zeolite modification with strong Lewis acid-base centers of a specific nature. This modification can be achieved by a pretreatment comprising two steps: a first conventional calcination step at 300-600° C., and a second high-temperature calcination step at 600-950° C.

    Abstract translation: 描述了将芳族化合物（例如苯及其衍生物）选择性氧化成羟基化芳族化合物（例如相应的酚）的方法和催化剂。 例如，苯可以转化成苯酚，产率至少为30-40％，苯的选择性至少为95-97％。 基于N2O的该反应的选择性为至少90-95％。 因此，不会发生完全苯氧化成CO + CO2或其他副产物的大量N2O分解或消耗。 尽管在衍生物的情况下选择性略低（例如在氟取代的苯的情况下为约80-85％），但苯衍生物（例如，氟苯，二氟苯，苯酚）也可得到类似的结果。 用于该方法的优选催化剂是含有不需要有目的地引入的添加剂如过渡金属或贵金属的高二氧化硅pentasil型沸石（例如，HZSM-5型沸石）的组合物。 通过用特定性质的强路易斯酸碱中心进行具体的沸石改性来实现催化效果。 该改性可以通过包括两个步骤的预处理来实现：在300-600℃下进行第一常规煅烧步骤，在600-950℃进行第二高温煅烧步骤。

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