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    Method for selective dealkylation of alkyl-substituted C9+ aromatic compounds using bimodal porous dealkylation catalyst at low temperature
    1.
    发明授权
    Method for selective dealkylation of alkyl-substituted C9+ aromatic compounds using bimodal porous dealkylation catalyst at low temperature 有权
    在低温下使用双峰多孔脱烷基化催化剂选择性脱烷基烷基取代的C 9+芳族化合物的方法

    公开(公告)号：US08735641B2

    公开(公告)日：2014-05-27

    申请号：US13530414

    申请日：2012-06-22

    申请人： Sung Hyeon Baeck ,  Geon Joong Kim ,  Dong-Kyun Noh ,  Tae Young Jang ,  Tae-Yun Kim ,  Young Soo Ahn ,  Chan-ju Song ,  Sang-Cheol Paik

    发明人： Sung Hyeon Baeck ,  Geon Joong Kim ,  Dong-Kyun Noh ,  Tae Young Jang ,  Tae-Yun Kim ,  Young Soo Ahn ,  Chan-ju Song ,  Sang-Cheol Paik

    IPC分类号： C07C4/18

    CPC分类号： C07C5/2775 ,  C07C2529/44 ,  Y02P20/52 ,  C07C15/02

    摘要： Disclosed is a method for selective dealkylation of alkyl-substituted C9+ aromatic compounds using a bimodal porous dealkylation catalyst at a low temperature. The catalyst has a bimodal porous structure including both mesopores and micropores. The catalyst includes a crystalline aluminosilicate and a metal. The catalyst is highly active at a low temperature. According to the method, C9+ aromatic compounds substituted with at least one C2+ alkyl group as by-products formed by xylene production can be selectively dealkylated and converted to BTX, etc. on a large scale within a short time. In addition, the method is an environmentally friendly process entailing reduced waste treatment cost when compared to conventional mesitylene production methods. Therefore, high value-added mesitylene can be separated from low value-added C9+ aromatic compounds at lower cost compared to conventional methods. Furthermore, the supported metal catalyst is easy to recover after dealkylation and is recyclable, thereby contributing to reduced cost.

    摘要翻译： 公开了使用双峰多孔脱烷基化催化剂在低温下选择性烷基转移烷基取代的C 9+芳族化合物的方法。 催化剂具有包括中孔和微孔的双峰多孔结构。 催化剂包括结晶硅铝酸盐和金属。 该催化剂在低温下具有高活性。 根据该方法，通过二甲苯生成形成的作为副产物的至少一个C2 +烷基取代的C9 +芳香族化合物可以选择性地脱烷基化并在短时间内大规模转化为BTX等。 此外，与常规的均三甲苯生产方法相比，该方法是一种环境友好的方法，降低了废物处理成本。 因此，与常规方法相比，高附加值的均三甲苯可以以低成本的C9 +芳族化合物分离。 此外，负载金属催化剂在脱烷基化后容易回收并且是可回收的，从而有助于降低成本。

    METHOD FOR SELECTIVE DEALKYLATION OF ALKYL-SUBSTITUTED C9+ AROMATIC COMPOUNDS USING BIMODAL POROUS DEALKYLATION CATALYST AT LOW TEMPERATURE
    2.
    发明申请
    METHOD FOR SELECTIVE DEALKYLATION OF ALKYL-SUBSTITUTED C9+ AROMATIC COMPOUNDS USING BIMODAL POROUS DEALKYLATION CATALYST AT LOW TEMPERATURE 有权
    在低温下使用双模多孔脱乙酰化催化剂选择性取代烷基取代的C9 +芳族化合物的方法

    公开(公告)号：US20130165727A1

    公开(公告)日：2013-06-27

    申请号：US13530414

    申请日：2012-06-22

    申请人： Sung Hyeon Baeck ,  Geon Joong Kim ,  Dong-Kyun Noh ,  Tae Young Jang ,  Tae-Yun Kim ,  Young Soo Ahn ,  Chan-Ju Song ,  Sang-Cheol Paik

    发明人： Sung Hyeon Baeck ,  Geon Joong Kim ,  Dong-Kyun Noh ,  Tae Young Jang ,  Tae-Yun Kim ,  Young Soo Ahn ,  Chan-Ju Song ,  Sang-Cheol Paik

    IPC分类号： C07C4/18

    CPC分类号： C07C5/2775 ,  C07C2529/44 ,  Y02P20/52 ,  C07C15/02

    摘要： Disclosed is a method for selective dealkylation of alkyl-substituted C9+ aromatic compounds using a bimodal porous dealkylation catalyst at a low temperature. The catalyst has a bimodal porous structure including both mesopores and micropores. The catalyst includes a crystalline aluminosilicate and a metal. The catalyst is highly active at a low temperature. According to the method, C9+ aromatic compounds substituted with at least one C2+ alkyl group as by-products formed by xylene production can be selectively dealkylated and converted to BTX, etc. on a large scale within a short time. In addition, the method is an environmentally friendly process entailing reduced waste treatment cost when compared to conventional mesitylene production methods. Therefore, high value-added mesitylene can be separated from low value-added C9+ aromatic compounds at lower cost compared to conventional methods. Furthermore, the supported metal catalyst is easy to recover after dealkylation and is recyclable, thereby contributing to reduced cost.

    摘要翻译： 公开了使用双峰多孔脱烷基化催化剂在低温下选择性烷基转移烷基取代的C 9+芳族化合物的方法。 催化剂具有包括中孔和微孔的双峰多孔结构。 催化剂包括结晶硅铝酸盐和金属。 该催化剂在低温下具有高活性。 根据该方法，通过二甲苯生成形成的作为副产物的至少一个C2 +烷基取代的C9 +芳香族化合物可以选择性地脱烷基化并在短时间内大规模转化为BTX等。 此外，与常规的均三甲苯生产方法相比，该方法是一种环境友好的方法，降低了废物处理成本。 因此，与常规方法相比，高附加值的均三甲苯可以以低成本的C9 +芳族化合物分离。 此外，负载金属催化剂在脱烷基化后容易回收并且是可回收的，从而有助于降低成本。

    Process for preparing chiral compounds from recemic epoxides by using chiral salen catalysts
    5.
    发明授权
    Process for preparing chiral compounds from recemic epoxides by using chiral salen catalysts 有权
    通过使用手性盐酸催化剂从接受环氧化物制备手性化合物的方法

    公开(公告)号：US06720434B2

    公开(公告)日：2004-04-13

    申请号：US10181193

    申请日：2002-07-11

    申请人： Geon-Joong Kim ,  Dae-Woon Park ,  Ho Seong Lee ,  Jin Won Yun ,  Seong Jin Kim

    发明人： Geon-Joong Kim ,  Dae-Woon Park ,  Ho Seong Lee ,  Jin Won Yun ,  Seong Jin Kim

    IPC分类号： C07D30104

    CPC分类号： B01J31/2243 ,  B01J2231/487 ,  B01J2531/0252 ,  B01J2531/845 ,  C07B2200/07 ,  C07D301/00 ,  C07F15/065

    摘要： The present invention relates to chiral salen catalysts and a process for preparing chiral compounds from racemic epoxides by using them. More particularly, the present invention is to provide chiral salen catalysts and its use for producing chiral compounds such as chiral epoxides and chiral 1,2-diols economically in high yield and high optical purity by performing stereoselective hydrolysis of racemic epoxides, wherein the chiral salen catalyst comprises a cationic cobalt as a center metal of chiral salen ligand and counterions having weak nucleophilic property to resolve disadvantages associated with conventional chiral salen catalysts, and can be used continuously without any activating process of used catalysts because it does not loose a catalytic activity during the reaction process.

    摘要翻译： 本发明涉及手性盐酸催化剂和通过使用它们由外消旋环氧化物制备手性化合物的方法。 更具体地说，本发明是通过进行外消旋环氧化物的立体选择性水解，提供手性盐酸催化剂及其用于以高产率和高光学纯度经济地制备手性环氧化物和手性1,2-二醇的用途，其中手性盐 催化剂包含阳离子钴作为手性salen配体的中心金属和具有弱亲核性质的抗衡离子，以解决与常规手性salen催化剂相关的缺点，并且可以连续使用而不使用所用催化剂的任何活化方法，因为它不会在 反应过程。