公开(公告)号：US08652994B2

公开(公告)日：2014-02-18

申请号：US13700427

申请日：2010-05-27

申请人： Dianqing Li ,  Junting Feng ,  Xiaoyan Ma

发明人： Dianqing Li ,  Junting Feng ,  Xiaoyan Ma

IPC分类号： B01J23/38 ,  B01J23/40 ,  B01J27/236

CPC分类号： B01J27/236 ,  B01J21/04 ,  B01J23/007 ,  B01J23/42 ,  B01J23/44 ,  B01J23/462 ,  B01J23/464 ,  B01J23/58 ,  B01J27/232 ,  B01J29/049 ,  B01J35/002 ,  B01J35/006 ,  B01J35/0066 ,  B01J35/1014 ,  B01J37/035 ,  B01J37/06

摘要： A process for preparing supported noble metal catalyst in situ is provided by mixing and crystallizing hexamethylenetetramine, soluble divalent metal salts solution, Al2O3 carriers and soluble noble metal salts solution wherein the hexamethylenetetramine is used as a precipitating agent for preparing hydrotalcite and a reducing agent of noble metal precursor. During the growth process of hydrotalcite, Al3+ on the Al2O3 carrier's surface is directly used as the trivalent metal ions in the laminate structure and the hydrotalcite is obtained on the surface of the Al2O3 carriers by in-situ growth. A supported catalyst Me-LDHs-Al2O3 containing an elementary noble metal is produced wherein the noble metal element particle in the catalyst has a particle size of 10 to 60 nm, and is evenly and stably dispersed on or between slabs of the hydrotalcite.

摘要翻译： 通过混合和结晶六亚甲基四胺，可溶性二价金属盐溶液，Al 2 O 3载体和可溶性贵金属盐溶液提供了原位制备负载型贵金属催化剂的方法，其中六亚甲基四胺用作制备水滑石的沉淀剂和贵金属的还原剂 金属前体。 在水滑石生长过程中，Al2O3载体表面的Al3 +直接用作叠层结构中的三价金属离子，并通过原位生长在Al2O3载体表面获得水滑石。 制备含有贵金属的载体催化剂Me-LDHs-Al 2 O 3，其中催化剂中的贵金属元素颗粒具有10至60nm的粒度，并均匀且稳定地分散在水滑石板之间或之间。

公开(公告)号：US20130143731A1

公开(公告)日：2013-06-06

申请号：US13700427

申请日：2010-05-27

申请人： Dianqing Li ,  Junting Feng ,  Xiaoyan Ma

发明人： Dianqing Li ,  Junting Feng ,  Xiaoyan Ma

IPC分类号： B01J27/236

CPC分类号： B01J27/236 ,  B01J21/04 ,  B01J23/007 ,  B01J23/42 ,  B01J23/44 ,  B01J23/462 ,  B01J23/464 ,  B01J23/58 ,  B01J27/232 ,  B01J29/049 ,  B01J35/002 ,  B01J35/006 ,  B01J35/0066 ,  B01J35/1014 ,  B01J37/035 ,  B01J37/06

摘要： A supported noble metal catalyst and a process for preparing the same in situ are provided. Hexamethylenetetramine, a soluble divalent metal salt solution, a Al2O3 carrier and a soluble noble metal salt solution, are mixed and crystallized, in which the hexamethylenetetramine acts as both a precipitating agent for producing hydrotalcite and a reducing agent for the noble metal precursor, and a supported catalyst Me-LDHs-Al2O3 containing an elementary substance of a noble metal is prepared by a one-step reaction. During the growth of the hydrotalcite, Al3+ on the surface layer of the Al2O3 carrier is directly used as the trivalent metal ion to form the slab structure of the hydrotalcite, and the hydrotalcite is grown in situ on the surface of the alumina carrier. The noble metal element particle in the catalyst has a particle size of 10 to 60 nm, and has an even and stable dispersion on or between slabs of the hydrotalcite. The calcination and reduction processes in the traditional production method are no longer required, and the reduced noble metal catalyst is obtained by a single step of a crystallization process, while the utilization ratio of the noble metal is high.

摘要翻译： 提供负载型贵金属催化剂及其原位制备方法。 将六亚甲基四胺，可溶性二价金属盐溶液，Al 2 O 3载体和可溶性贵金属盐溶液混合并结晶，其中六亚甲基四胺既用作制备水滑石的沉淀剂和贵金属前体的还原剂， 通过一步反应制备含有贵金属的基本物质的载体催化剂Me-LDHs-Al 2 O 3。 在水滑石生长过程中，Al2O3载体的表层上的Al3 +直接用作三价金属离子，形成水滑石的板状结构，水滑石在氧化铝载体的表面原位生长。 催化剂中的贵金属元素粒子的粒径为10〜60nm，并且在水滑石板之间或之间均匀且稳定地分散。 不再需要传统生产方法中的煅烧和还原过程，而贵金属的利用率高时，通过结晶过程的一个步骤获得还原的贵金属催化剂。

公开(公告)号：US20110237430A1

公开(公告)日：2011-09-29

申请号：US13128546

申请日：2009-06-25

申请人： Fazhi Zhang ,  Peng Chen ,  Rong Hou ,  Jiali Chen ,  Chao Gao ,  Hui Zhang ,  Dianqing Li ,  Feng Li ,  Xue Duan

发明人： Fazhi Zhang ,  Peng Chen ,  Rong Hou ,  Jiali Chen ,  Chao Gao ,  Hui Zhang ,  Dianqing Li ,  Feng Li ,  Xue Duan

IPC分类号： B01J21/04 ,  B01J37/06 ,  B01J37/18 ,  B01J37/08 ,  B01J35/02 ,  B01J21/10

CPC分类号： B01J23/007 ,  B01J23/44 ,  B01J23/58 ,  B01J23/892 ,  B01J23/8926 ,  B01J35/008 ,  B01J37/0201 ,  B01J37/18 ,  C01F7/005 ,  C01P2002/22 ,  C07C67/303 ,  C07C2601/14 ,  C07C69/75

摘要： A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of Al2O3 microspheres, the atoms of the promoting metal and aluminium being highly dispersed by each other and bonded firmly to the carrier due to the crystal lattice positioning effect of the hydrotalcite crystal; (2) introduction of palladium into the carrier through impregnation; (3) drying; and (4) calcination and reduction with H2, the hydrotalcite layered precursor being converted into a composite oxide which consists of oxides of the promoting metal and aluminium, and the promoting metal element and aluminium being highly dispersed by each other and being able to separate and disperse the mainly active palladium element loaded later. The process has the advantages of improving the catalytic performance of the catalyst, enhancing the stability of the catalyst, and achieving the object of reducing the consumption of the precious metal-palladium.

摘要翻译： 一种制备催化剂的方法，所述催化剂包含通过层状前体负载在载体上的钯，其包括以下步骤：（1）合成水滑石层状前体，其包括在Al 2 O 3微球载体的表面上促进金属元素和铝， 由于水滑石晶体的晶格定位效应，促进金属和铝彼此高度分散并牢固地结合到载体上; （2）通过浸渍将钯引入载体; （3）干燥; 和（4）用H 2煅烧和还原，水滑石层状前体被转化为由促进金属和铝的氧化物组成的复合氧化物，并且促进金属元素和铝彼此高度分散，并且能够分离和 分散稍后加载的主要活性钯元素。 该方法具有提高催化剂的催化性能，提高催化剂稳定性，降低贵金属钯的消耗量的优点。

公开(公告)号：US08765632B2

公开(公告)日：2014-07-01

申请号：US13128546

申请日：2009-06-25

申请人： Fazhi Zhang ,  Peng Chen ,  Rong Hou ,  Jiali Chen ,  Chao Gao ,  Hui Zhang ,  Dianqing Li ,  Feng Li ,  Xue Duan

发明人： Fazhi Zhang ,  Peng Chen ,  Rong Hou ,  Jiali Chen ,  Chao Gao ,  Hui Zhang ,  Dianqing Li ,  Feng Li ,  Xue Duan

IPC分类号： B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J20/00 ,  B01J21/04 ,  B01J31/00 ,  B01J37/00 ,  C08F4/02 ,  C08F4/60

CPC分类号： B01J23/007 ,  B01J23/44 ,  B01J23/58 ,  B01J23/892 ,  B01J23/8926 ,  B01J35/008 ,  B01J37/0201 ,  B01J37/18 ,  C01F7/005 ,  C01P2002/22 ,  C07C67/303 ,  C07C2601/14 ,  C07C69/75

摘要： A process for preparing a catalyst comprising palladium supported on a carrier via a layered precursor, comprising the following steps: (1) synthesis of hydrotalcite layered precursor which comprises promoting metal element and aluminium on the surface of the carrier of A12O3 microspheres, the atoms of the promoting metal and aluminium being highly dispersed by each other and bonded firmly to the carrier due to the crystal lattice positioning effect of the hydrotalcite crystal; (2) introduction of palladium into the carrier through impregnation; (3) drying; and (4) calcination and reduction with H2, the hydrotalcite layered precursor being converted into a composite oxide which consists of oxides of the promoting metal and aluminium, and the promoting metal element and aluminium being highly dispersed by each other and being able to separate and disperse the mainly active palladium element loaded later. The process has the advantages of improving the catalytic performance of the catalyst, enhancing the stability of the catalyst, and achieving the object of reducing the consumption of the precious metal-palladium.

摘要翻译： 一种制备催化剂的方法，所述催化剂包含通过层状前体负载在载体上的钯，其包括以下步骤：（1）合成水滑石层状前体，其包括在A12O3微球载体的表面上促进金属元素和铝， 由于水滑石晶体的晶格定位效应，促进金属和铝彼此高度分散并牢固地结合到载体上; （2）通过浸渍将钯引入载体; （3）干燥; 和（4）用H 2煅烧和还原，水滑石层状前体被转化为由促进金属和铝的氧化物组成的复合氧化物，并且促进金属元素和铝彼此高度分散，并且能够分离和 分散稍后加载的主要活性钯元素。 该方法具有提高催化剂的催化性能，提高催化剂稳定性，降低贵金属钯的消耗量的优点。

公开(公告)号：US08088349B2

公开(公告)日：2012-01-03

申请号：US11853788

申请日：2007-09-11

申请人： Xue Duan ,  Dianqing Li ,  Zhi Lv ,  Yanjun Lin ,  Xiangyu Xu

发明人： Xue Duan ,  Dianqing Li ,  Zhi Lv ,  Yanjun Lin ,  Xiangyu Xu

IPC分类号： C01F11/20

CPC分类号： C07F15/045 ,  C01F7/004 ,  C01G9/006 ,  C01G45/00 ,  C01G49/009 ,  C01G53/006 ,  C01P2002/22 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/82 ,  C01P2004/04 ,  C01P2004/20

摘要： Disclosed is a clean method for preparing layered double hydroxides (LDHs), in which hydroxides of different metals are used as starting materials for production of LDHs by atom-economical reactions. The atom efficiency of the reaction is 100% in each case because all the atoms of the reactants are converted into the target product since only M2+(OH)2, M3+(OH)3, and CO2 or HnAn− are used, without any NaOH or other materials. Since there is no by-product, filtration or washing process is unnecessary. The consequent reduction in water consumption is also beneficial to the environment.

摘要翻译： 公开了一种用于制备层状双氢氧化物（LDH）的清洁方法，其中使用不同金属的氢氧化物作为通过原子 - 经济反应生产LDH的起始原料。 在每种情况下，反应的原子效率为100％，因为所有的反应物原子转化成目标产物，因为只使用M2 +（OH）2，M3 +（OH）3和CO 2或HnAn-，而不使用任何NaOH 或其他材料。 由于没有副产品，过滤或洗涤过程是不必要的。 随之而来的用水量减少也有利于环境。

公开(公告)号：US20080170978A1

公开(公告)日：2008-07-17

申请号：US11853788

申请日：2007-09-11

申请人： Xue Duan ,  Dianqing Li ,  Zhi Lv ,  Yanjun Lin ,  Xiangyu Xu

发明人： Xue Duan ,  Dianqing Li ,  Zhi Lv ,  Yanjun Lin ,  Xiangyu Xu

IPC分类号： C01B31/00 ,  C01B25/12 ,  C07F15/02

CPC分类号： C07F15/045 ,  C01F7/004 ,  C01G9/006 ,  C01G45/00 ,  C01G49/009 ,  C01G53/006 ,  C01P2002/22 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/82 ,  C01P2004/04 ,  C01P2004/20

摘要： Disclosed is a clean method for preparing layered double hydroxides (LDHs), in which hydroxides of different metals are used as starting materials for production of LDHs by atom-economical reactions. The atom efficiency of the reaction is 100% in each case because all the atoms of the reactants are converted into the target product since only M2+(OH)2, M3+(OH)3, and CO2 or HnAn− are used, without any NaOH or other materials. Since there is no by-product, filtration or washing process is unnecessary. The consequent reduction in water consumption is also beneficial to the environment.

摘要翻译： 公开了一种用于制备层状双氢氧化物（LDH）的清洁方法，其中使用不同金属的氢氧化物作为通过原子 - 经济反应生产LDH的起始原料。 在每种情况下，反应的原子效率为100％，因为反应物的所有原子都转化为目标产物，因为只有M 2 +（OH）2，M 3 +（OH）3 3，和CO 2或H N >，不使用任何NaOH或其他材料。 由于没有副产品，过滤或洗涤过程是不必要的。 随之而来的用水量减少也有利于环境。