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公开(公告)号：US20050171385A1
公开(公告)日：2005-08-04
申请号：US10678902
申请日：2003-10-02
申请人： Raksh Jasra , Beena Tyagi , Yogiraj Badheka
发明人： Raksh Jasra , Beena Tyagi , Yogiraj Badheka
CPC分类号： C07C45/46 , B01J21/16 , B01J29/085 , B01J29/18 , B01J29/7057 , B01J29/90 , Y02P20/584 , C07C49/76
摘要： An ecofriendly process for acylation of an alkylated benzene derivative has increased selectivity towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenzene, dimethylsulfolane, and/or benzonitrile, and a crystalline alumino silicate catalyst having general formula M2/nO.Al2O3.x SiO2.wH2O, wherein M is an alkali cation, a rare earth cation, and/or a proton, wherein the Si/Al ration is in the range of 5.5 to 20, wherein the weight percentage of the alkali and/or lanthanide cation is between 10 to 30, and wherein the step of reacting is performed at temperature between 90° to 140° C. for 5 to 25 hours. In a further step, the solid catalyst is separated from the reaction mixture of step, and in yet another step, the acylated alkyl benzene derivative is separated from the mixture.
摘要翻译： 酰化烷基化苯衍生物的环保方法具有增加对对位的选择性，并且包括在硝基苯，二氯苯，二甲基环丁砜和/或苄腈存在下使烷基化苯衍生物与酰化剂反应的步骤，以及结晶铝硅酸盐 具有通式M 2 / n O的催化剂.Al 2 O 3 O 3 x SiO 2 .WH
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公开(公告)号：US07544831B2
公开(公告)日：2009-06-09
申请号：US11859001
申请日：2007-09-21
CPC分类号： C07C67/08 , C07C69/157
摘要： The present invention provides a green catalytic process for the synthesis of acetyl salicylic acid using solid acid catalysts at atmospheric pressure. The invention involve the solid acid catalyst such as sulfated transition metal oxides namely nano-crystalline sulfated zirconia, sulfated titania; modified zeolites namely zeolite H-beta, H-Y, H-ZSM-5 and K-10 montmorillonite clay in a solvent free environment using salicylic acid and acetic anhydride with yield about 95% and high selectivity (100%). The solid acid catalysts can be recovered, regenerated and reused.
摘要翻译： 本发明提供了在大气压下使用固体酸催化剂合成乙酰基水杨酸的绿色催化方法。 本发明涉及固体酸催化剂，例如硫酸化过渡金属氧化物，即纳米结晶硫酸氧化锆，硫酸化二氧化钛; 改性沸石，即沸石H-β，H-Y，H-ZSM-5和K-10蒙脱土粘土，在无溶剂环境中使用水杨酸和乙酸酐，产率约95％，高选择性（100％）。 固体酸催化剂可以回收，再生和再利用。
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公开(公告)号：US07132582B2
公开(公告)日：2006-11-07
申请号：US10448457
申请日：2003-05-30
CPC分类号： B01J21/066 , B01J37/036 , B01J37/20 , C07C5/31 , C07C2521/06 , C07C13/28
摘要： The present invention relates to a catalytic process for preparation of isolongifolene using nanocrystalline solid super acid. This process is an eco-friendly, single step, solvent free catalytic process for the preparation of a tricyclic sesqui-terpene hydrocarbon, isolongifolene. More particularly, the present invention provides a process for the catalytic isomerisation of longifolene to iso-longifolene using nano-crystalline sulfated zirconia as a solid super acid catalyst.
摘要翻译： 本发明涉及使用纳米结晶固体超强酸制备异龙蕊烯的催化方法。 该方法是一种环保，单步，无溶剂的催化方法，用于制备三环倍半萜烃，异环戊烯。 更具体地说，本发明提供了使用纳米结晶硫酸化氧化锆作为固体超酸催化剂将长叶烯催化异构化为异龙蒿烯的方法。
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公开(公告)号：US07087791B2
公开(公告)日：2006-08-08
申请号：US10678902
申请日：2003-10-02
IPC分类号： C07C45/00
CPC分类号： C07C45/46 , B01J21/16 , B01J29/085 , B01J29/18 , B01J29/7057 , B01J29/90 , Y02P20/584 , C07C49/76
摘要： An ecofriendly process for acylation of an alkylated benzene derivative has increased selectively towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenze, dimethylsulfolane, and/or benzotrile, and a crystalline alumino silicate catalyst having general formula M2/nO.Al2O3.xSiO2.wH2O, wherein M is an alkali cation, a rare earth cation, and/or a proton, wherein the Si/Al ratio is in the range of 5.5 to 20, wherein the step of reacting is performed at temperature between 80° to 140° C. for 5 to 25 hours. In a further step, the solid catalyst is separated from the reaction mixture of step, and in yet another step, the acylated alkyl benzene derivative is separated from the mixture.
摘要翻译： 烷基化苯衍生物酰化的环保方法选择性地向对位增加，并且包括在硝基苯，二氯苯，二甲基环丁砜和/或苯并吡喃存在下使烷基化苯衍生物与酰化剂反应的步骤，以及结晶铝硅酸盐 具有通式M 2 / n O的催化剂。Al 2 O 3·xSiO 2·w < 2 O，其中M是碱性阳离子，稀土阳离子和/或质子，其中Si / Al比在5.5至20的范围内，其中反应步骤在 80°至140℃，持续5至25小时。 在另一步骤中，将固体催化剂与步骤的反应混合物分离，在另一步骤中，将酰化烷基苯衍生物与混合物分离。
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