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    Method for preparing hydroxylamine
    11.
    发明授权
    Method for preparing hydroxylamine 有权
    制备羟胺的方法

    公开(公告)号：US07417168B2

    公开(公告)日：2008-08-26

    申请号：US11732837

    申请日：2007-04-05

    申请人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Yuh-Ing Hwang

    发明人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Yuh-Ing Hwang

    IPC分类号： C07C239/08

    CPC分类号： C01B21/1418 ,  C01C3/11 ,  C01C3/12 ,  C01P2006/80

    摘要： A method for preparing hydroxylamine is provided that includes the steps of (i) pretreating an acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, wherein the pretreatment is performed by adding a precipitant represented by formula (I) to the acidic buffer solution, [(A)aM(CN)6.xH2O]  (I) allowing the metal impurities in the acidic buffer solution to react with the precipitant to form metal complex, and then to remove the metal complex. The metal complex is formed and separated by pretreating the acidic buffer solution with a specific precipitant without adjusting pH and changing the composition of the acidic buffer solution prior to hydroxylamine synthesis, thus enhancing the selectivity of the hydroxylamine production.

    摘要翻译： 提供了制备羟胺的方法，其包括以下步骤：（i）预处理酸性缓冲溶液; （ii）在催化剂存在下用氢还原酸性缓冲溶液中的硝酸根离子，得到羟胺，其中预处理是通过将由式（I）表示的沉淀剂加入到酸性缓冲溶液中， 公式描述=“在线公式”end =“lead”？> [（A）aM（CN）6 .XH （I）<？ -line-formula description =“In-line Formulas”end =“tail”？>使酸性缓冲溶液中的金属杂质与沉淀剂反应形成金属络合物，然后除去金属络合物。 通过用特定沉淀剂预处理酸性缓冲溶液而不调节pH并在羟胺合成之前改变酸性缓冲溶液的组成，形成和分离金属络合物，从而提高羟胺生产的选择性。

    Method for preparing hydroxylamine
    12.
    发明申请
    Method for preparing hydroxylamine 有权
    制备羟胺的方法

    公开(公告)号：US20080015388A1

    公开(公告)日：2008-01-17

    申请号：US11732837

    申请日：2007-04-05

    申请人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Yuh-Ing Hwang

    发明人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Yuh-Ing Hwang

    IPC分类号： C07C239/08

    CPC分类号： C01B21/1418 ,  C01C3/11 ,  C01C3/12 ,  C01P2006/80

    摘要： A method for preparing hydroxylamine is provided that includes the steps of (i) pretreating an acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, wherein the pretreatment is performed by adding a precipitant represented by formula (I) to the acidic buffer solution, [(A)aM(CN)6.xH2O]  (I) allowing the metal impurities in the acidic buffer solution to react with the precipitant to form metal complex, and then to remove the metal complex. The metal complex is formed and separated by pretreating the acidic buffer solution with a specific precipitant without adjusting pH and changing the composition of the acidic buffer solution prior to hydroxylamine synthesis, thus enhancing the selectivity of the hydroxylamine production.

    摘要翻译： 提供了制备羟胺的方法，其包括以下步骤：（i）预处理酸性缓冲溶液; （ii）在催化剂存在下用氢还原酸性缓冲溶液中的硝酸根离子，得到羟胺，其中预处理是通过将由式（I）表示的沉淀剂加入到酸性缓冲溶液中， 公式描述=“在线公式”end =“lead”？> [（A）aM（CN）6 .XH （I）<？ -line-formula description =“In-line Formulas”end =“tail”？>使酸性缓冲溶液中的金属杂质与沉淀剂反应形成金属络合物，然后除去金属络合物。 通过用特定沉淀剂预处理酸性缓冲溶液而不调节pH并在羟胺合成之前改变酸性缓冲溶液的组成，形成和分离金属络合物，从而提高羟胺生产的选择性。

    METHOD FOR PREPARING AMIDE
    13.
    发明申请
    METHOD FOR PREPARING AMIDE 有权
    制备酰胺的方法

    公开(公告)号：US20100063274A1

    公开(公告)日：2010-03-11

    申请号：US12501699

    申请日：2009-07-13

    申请人： Tung-Han Tsai ,  Pin-To Yao ,  Cheng-Fa Hsieh

    发明人： Tung-Han Tsai ,  Pin-To Yao ,  Cheng-Fa Hsieh

    IPC分类号： C07D201/04 ,  C07D223/10

    CPC分类号： C07D201/04 ,  C07D223/10

    摘要： The present invention provides a method for preparing amides, in which an amino acid ionic liquid is used as both a reaction medium and a catalyst to catalyze Beckman rearrangement of a ketoxime, so as to produce an amide. In the method, the rearrangement is conducted by catalyzing a ketoxime with an amino acid ionic liquid having the asymmetric property at a moderate reaction temperature during a short reaction time, so as to produce an amide without adding other catalysts such as concentrate sulfuric acid. The method has advantages such as avoiding corrosion in equipments with pipelines, the high conversion rate of ketoximes and the high selectivity of amides.

    摘要翻译： 本发明提供了一种制备酰胺的方法，其中使用氨基酸离子液体作为反应介质和催化贝克曼重排酮肟的催化剂，以产生酰胺。 在该方法中，通过在短的反应时间内在适度的反应温度下用具有不对称性质的氨基酸离子液体催化酮肟进行重排，从而在不加入其它催化剂如浓硫酸的情况下生成酰胺。 该方法具有避免管道设备腐蚀，酮肟转化率高，酰胺选择性高等优点。

    Catalyst composition for preparing hydroxylamine
    14.
    发明授权
    Catalyst composition for preparing hydroxylamine 有权
    用于制备羟胺的催化剂组合物

    公开(公告)号：US07622420B1

    公开(公告)日：2009-11-24

    申请号：US12454962

    申请日：2009-05-27

    申请人： Pin-To Yao ,  Chun-Kao Wang ,  Cheng-Fa Hsieh

    发明人： Pin-To Yao ,  Chun-Kao Wang ,  Cheng-Fa Hsieh

    IPC分类号： B01J23/00 ,  B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/54 ,  B01J23/56 ,  B01J23/60 ,  B01J23/62 ,  B01J23/64 ,  B01J23/644

    CPC分类号： B01J23/624 ,  B01J23/62 ,  B01J23/66 ,  B01J27/1856 ,  C01B21/1418

    摘要： This invention provides a catalyst composition for preparing hydroxylamine, which comprises palladium, a platinum compound, a germanium compound and a carrier, wherein a halogen concentration of the composition is no more than 10 ppm. The catalyst composition is prevented from poisoning by halogens, and therefore the catalyst composition has high selectivity and catalytic activity. Further, the weight ratio of palladium and platinum in the catalyst composition ranges from 100:1 to 1000:1, such that the catalyst composition can be used to solve the commonly observed problem, i.e., decreased selectivity due to the excessive amount of platinum.

    摘要翻译： 本发明提供一种用于制备羟胺的催化剂组合物，其包含钯，铂化合物，锗化合物和载体，其中组合物的卤素浓度不超过10ppm。 催化剂组合物不会被卤素中毒，因此催化剂组合物具有高选择性和催化活性。 此外，催化剂组合物中钯和铂的重量比为100:1-1000:1，使得催化剂组合物可用于解决普遍观察到的问题，即由于铂的过量引起的选择性降低。

    Method for preparing hydroxylamine
    15.
    发明申请
    Method for preparing hydroxylamine 有权
    制备羟胺的方法

    公开(公告)号：US20070265471A1

    公开(公告)日：2007-11-15

    申请号：US11712690

    申请日：2007-02-28

    申请人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Ren-Hao Hsu

    发明人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Ren-Hao Hsu

    IPC分类号： C07C239/08

    CPC分类号： C01B21/1418

    摘要： A method for preparing hydroxylamine, comprising the steps of: (i) pretreating the acidic buffer solution with the compounds having a functional group represented by formula (I), thereby removing metal impurities from the acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, According to the present invention the selectivity for reducing nitrate ions to give hydroxylamine can be significantly enhanced.

    摘要翻译： 一种制备羟胺的方法，包括以下步骤：（i）用具有由式（I）表示的官能团的化合物预处理酸性缓冲溶液，从而从酸性缓冲溶液中除去金属杂质; 和（ii）用氢还原酸性缓冲溶液中的硝酸根离子，在催化剂存在下得到羟胺。根据本发明，可显着提高还原硝酸根离子以产生羟胺的选择性。

    Method for preparing hydroxylamine
    16.
    发明授权
    Method for preparing hydroxylamine 有权
    制备羟胺的方法

    公开(公告)号：US07399885B2

    公开(公告)日：2008-07-15

    申请号：US11712690

    申请日：2007-02-28

    申请人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Ren-Hao Hsu

    发明人： Pin-To Yao ,  Cheng-Fa Hsieh ,  Ren-Hao Hsu

    IPC分类号： C07C239/08

    CPC分类号： C01B21/1418

    摘要： A method for preparing hydroxylamine, comprising the steps of: (i) pretreating the acidic buffer solution with the compounds having a functional group represented by formula (I), thereby removing metal impurities from the acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, According to the present invention the selectivity for reducing nitrate ions to give hydroxylamine can be significantly enhanced.

    摘要翻译： 一种制备羟胺的方法，包括以下步骤：（i）用具有由式（I）表示的官能团的化合物预处理酸性缓冲溶液，从而从酸性缓冲溶液中除去金属杂质; 和（ii）用氢还原酸性缓冲溶液中的硝酸根离子，在催化剂存在下得到羟胺。根据本发明，可显着提高还原硝酸根离子以产生羟胺的选择性。

    CATALYST COMPOSITION AND METHOD FOR PREPARING AMIDE USING THE SAME
    18.
    发明申请
    CATALYST COMPOSITION AND METHOD FOR PREPARING AMIDE USING THE SAME 有权
    催化剂组合物及其制备方法

    公开(公告)号：US20120184733A1

    公开(公告)日：2012-07-19

    申请号：US13332834

    申请日：2011-12-21

    申请人： Tung-Han Tsai ,  Cheng-Fa Hsieh ,  Hung-Hung Hseuh ,  Chien-Chuan Shih

    发明人： Tung-Han Tsai ,  Cheng-Fa Hsieh ,  Hung-Hung Hseuh ,  Chien-Chuan Shih

    IPC分类号： C07D201/04 ,  B01J31/02

    CPC分类号： C07D201/04 ,  B01J31/0237 ,  B01J31/0244 ,  B01J2231/52 ,  C07C231/10 ,  Y02P20/584 ,  C07C233/07 ,  C07C233/05

    摘要： The present invention provides a method for preparing an amide. The method includes the steps of performing in a reactor including a catalyst composition having a nitrogen-containing heterocyclic compound and sulfuric acid Beckman rearrangement of a ketoxime to form a product stream having the amide, wherein a molar ratio of the nitrogen-containing heterocyclic compound to the sulfuric acid is from 1:1 to 1:8; and separating an organic phase having the amide and an aqueous phase having the catalyst composition from the product stream. The present invention facilitates the regeneration of the catalyst composition with low water content, so as to increase the conversion rate of a ketoxime and the selectivity of an amide.

    摘要翻译： 本发明提供一种制备酰胺的方法。 该方法包括以下步骤：在包括具有含氮杂环化合物的催化剂组合物和酮肟的硫酸贝克曼重排反应器的反应器中进行，以形成具有酰胺的产物流，其中含氮杂环化合物与 硫酸为1:1至1:8; 并从产物流中分离出具有酰胺的有机相和具有催化剂组成的水相。 本发明有助于低水含量的催化剂组合物的再生，从而提高酮肟的转化率和酰胺的选择性。

    Method for manufacturing hydroxylamine
    19.
    发明申请
    Method for manufacturing hydroxylamine 有权
    制备羟胺的方法

    公开(公告)号：US20090324480A1

    公开(公告)日：2009-12-31

    申请号：US12459784

    申请日：2009-07-08

    申请人： Shu-Hung Yang ,  Cheng-Fa Hsieh ,  Yi-Bau Hung

    发明人： Shu-Hung Yang ,  Cheng-Fa Hsieh ,  Yi-Bau Hung

    IPC分类号： C01B21/14

    CPC分类号： C01B21/1418

    摘要： Provided is a method for manufacturing hydroxylamine. In this method, an aqueous reaction medium containing acidic buffer agent and nitrate ions in the presence of a limited amount of metal impurities such as Fe or Cu is introduced into a hydroxylamine synthesis reactor in the presence of catalyst to proceed hydroxylamine synthesis by reduction of nitrate ions with hydrogen gas as reducing agent in the aqueous reaction medium to produce hydroxylamine. The reaction is processed in the aqueous reaction medium with a limited amount of metal impurities or even without metal impurities, such that the selection rate of the hydroxylamine product is increased.

    摘要翻译： 提供了制备羟胺的方法。 在该方法中，在有限量的金属杂质如Fe或Cu的存在下，将酸性缓冲剂和硝酸根离子的含水反应介质在催化剂存在下引入羟胺合成反应器中以通过还原硝酸盐进行羟胺合成 离子与氢气作为还原剂在水性反应介质中产生羟胺。 反应在水性反应介质中用有限量的金属杂质或甚至没有金属杂质处理，使得羟胺产物的选择速率增加。