公开(公告)号：US20140322622A1

公开(公告)日：2014-10-30

申请号：US14118301

申请日：2012-05-15

Applicant: Debasish Chakraborty

Inventor： Debasish Chakraborty

IPC: C01B3/08 ,  H01M8/06

CPC classification number: C01B3/08 ,  B01J21/04 ,  B01J23/46 ,  B01J23/462 ,  B01J23/58 ,  B01J23/63 ,  B01J23/644 ,  B01J23/6447 ,  B01J35/00 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/10 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J37/02 ,  B01J37/0203 ,  B01J37/0211 ,  B01J37/0221 ,  B01J37/08 ,  C01B3/047 ,  H01M8/0606 ,  Y02E60/324 ,  Y02E60/364 ,  Y02E60/50

Abstract: In a method of preparing a ruthenium-containing catalyst on a non-conductive metal oxide support comprises dissolving one or more ruthenium precursor compounds in an liquid organic polyol, combining the thus obtained solution with (a) nano-powder(s) of one or more metal oxides in a ratio of moles metal oxide(s) to moles ruthenium atoms in the one or more ruthenium precursor compounds of about 0:1 to about 6:1, the metal oxide nano-powder(s) having a surface area of from about 5 to about 300m2/g and a point of zero charge (PZC) of pH 5.5 or higher, agitating the thus obtained mixture, adding pre-shaped alumina sup port pellets to the agitated mixture, which is than heated at a temperature of about 50° C. to the boiling point of the organic polyol, until the reaction is finished, cooling the mixture and combining it with an aqueous solution of NaNO3 and/or KNO3, agitating the resultant mixture, separating the solvent and the solids, and drying the thus obtained solid pellets of alumina, or alumina and the metal oxide(s) of the nano-powder(s) coated with ruthenium and an additional amount Na and/or K ions. Also disclosed is the sup ported ruthenium-containing catalyst obtainable by the method and the use thereof in decomposing ammonia into nitrogen and oxygen.

Abstract translation: 在非导电性金属氧化物载体上制备含钌催化剂的方法包括将一种或多种钌前体化合物溶解在液体有机多元醇中，将由此获得的溶液与（a）一种或多种纳米粉末组合， 一种或多种钌前体化合物中的金属氧化物与一种或多种钌前体化合物中钌原子摩尔数的摩尔比为大约0:1至大约6:1的金属氧化物，所述金属氧化物纳米粉末的表面积为 约5至约300m 2 / g和pH 5.5或更高的零电荷点（PZC），搅拌由此获得的混合物，向预先搅拌的混合物中加入预形状的氧化铝支撑颗粒，该混合物在温度为 约50℃至有机多元醇的沸点，直到反应完成，冷却混合物并将其与NaNO 3和/或KNO 3的水溶液混合，搅拌所得混合物，分离溶剂和固体，和 干燥由此获得的氧化铝固体颗粒， 或氧化铝和涂覆有钌的纳米粉末和额外量的Na和/或K离子的金属氧化物。 还公开了通过该方法获得的支持钌的催化剂及其在将氨分解成氮和氧的用途。

公开(公告)号：US09499402B2

公开(公告)日：2016-11-22

申请号：US14118301

申请日：2012-05-15

Applicant: Debasish Chakraborty

Inventor： Debasish Chakraborty

IPC: C01B3/08 ,  H01M8/06 ,  B01J21/04 ,  B01J23/46 ,  B01J23/58 ,  B01J23/63 ,  B01J23/644 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08 ,  C01B3/04

CPC classification number: C01B3/08 ,  B01J21/04 ,  B01J23/46 ,  B01J23/462 ,  B01J23/58 ,  B01J23/63 ,  B01J23/644 ,  B01J23/6447 ,  B01J35/00 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/10 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J37/02 ,  B01J37/0203 ,  B01J37/0211 ,  B01J37/0221 ,  B01J37/08 ,  C01B3/047 ,  H01M8/0606 ,  Y02E60/324 ,  Y02E60/364 ,  Y02E60/50

Abstract: In a method of preparing a ruthenium-containing catalyst on a non-conductive metal oxide support comprises dissolving one or more ruthenium precursor compounds in an liquid organic polyol, combining the thus obtained solution with (a) nano-powder(s) of one or more metal oxides in a ratio of moles metal oxide(s) to moles ruthenium atoms in the one or more ruthenium precursor compounds of about 0:1 to about 6:1, the metal oxide nano-powder(s) having a surface area of from about 5 to about 300 m2/g and a point of zero charge (PZC) of pH 5.5 or higher, agitating the thus obtained mixture, adding pre-shaped alumina support pellets to the agitated mixture, which is than heated at a temperature of about 50° C. to the boiling point of the organic polyol, until the reaction is finished, cooling the mixture and combining it with an aqueous solution of NaNO3 and/or KNO3, agitating the resultant mixture, separating the solvent and the solids, and drying the thus obtained solid pellets of alumina, or alumina and the metal oxide(s) of the nano-powder(s) coated with ruthenium and an additional amount Na and/or K ions. Also disclosed is the supported ruthenium-containing catalyst obtainable by the method and the use thereof in decomposing ammonia into nitrogen and oxygen.

Abstract translation: 在非导电性金属氧化物载体上制备含钌催化剂的方法包括将一种或多种钌前体化合物溶解在液体有机多元醇中，将由此获得的溶液与（a）一种或多种纳米粉末组合， 一种或多种钌前体化合物中的金属氧化物与一种或多种钌前体化合物中钌原子摩尔数的摩尔比为大约0:1至大约6:1的金属氧化物，所述金属氧化物纳米粉末的表面积为 约5至约300m 2 / g和pH 5.5或更高的零电荷点（PZC），搅拌由此获得的混合物，将预形状的氧化铝载体颗粒加入到搅拌的混合物中，该混合物在温度为 约50℃至有机多元醇的沸点，直到反应完成，冷却混合物并将其与NaNO 3和/或KNO 3的水溶液混合，搅拌所得混合物，分离溶剂和固体，和 干燥由此获得的氧化铝固体颗粒， 或氧化铝和涂覆有钌的纳米粉末和额外量的Na和/或K离子的金属氧化物。 还公开了通过该方法获得的负载的含钌催化剂及其在将氨分解成氮和氧的用途。

公开(公告)号：US20100083358A1

公开(公告)日：2010-04-01

申请号：US12351861

申请日：2009-01-12

Applicant: Velamur Rangachari Govindarajan ,  Debasish Chakraborty ,  Kunnath Santhosh

Inventor： Velamur Rangachari Govindarajan ,  Debasish Chakraborty ,  Kunnath Santhosh

IPC: H04L9/32 ,  G06F21/00

CPC classification number: G06F21/33 ,  G06F21/41 ,  G06F21/6263 ,  H04L9/32 ,  H04L63/06 ,  H04L63/08 ,  H04L2209/56 ,  H04L2209/88

Abstract: Disclosed herein is a computer implemented method and system that securely aggregates and manages user related data in an online environment while maintaining privacy of a user. The user provides access credentials at a client device for each of multiple data sources. The access credentials are transformed to an unreadable format at the client device using a public key transmitted by a web server. The transformed access credentials in the unreadable format are stored locally on the client device. A communicating software agent on the client device communicates the stored access credentials to the web server. The web server transforms the communicated access credentials to a readable format using a private key and retrieves the user related data by accessing the data sources using the access credentials in the readable format. The web server presents the retrieved user related data to the user in one or more presentation modes.

Abstract translation: 这里公开了一种计算机实现的方法和系统，其在保持用户的隐私的同时在在线环境中安全地聚集和管理用户相关数据。 用户在客户端设备为每个多个数据源提供访问凭据。 访问凭证使用由web服务器发送的公共密钥在客户端设备转换为不可读格式。 以不可读格式转换的访问凭据本地存储在客户端设备上。 客户端设备上的通信软件代理将存储的访问凭证传送到Web服务器。 Web服务器使用专用密钥将传达的访问凭证转换为可读格式，并通过使用可读格式的访问凭证访问数据源来检索用户相关数据。 Web服务器以一种或多种呈现模式将检索到的用户相关数据呈现给用户。