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1. 发明授权

US07288240B2 Method for production of hydrogen peroxide with improved yield and selectivity by direct oxidation of hydrogen over palladium containing catalyst 失效
标题翻译：通过在含钯催化剂上直接氧化氢而提高产率和选择性的过氧化氢生产方法
公开(公告)号：US07288240B2
公开(公告)日：2007-10-30
申请号：US11167573
申请日：2005-06-27
申请人： Vasant Ramchandra Choudhary , Chancal Samanta , Prabhas Jana
发明人： Vasant Ramchandra Choudhary , Chancal Samanta , Prabhas Jana
IPC分类号： C01B15/029 , B01J27/13
CPC分类号： C01B15/029
摘要： A method for improving drastically both the selectivity and yield of hydrogen peroxide in the direct oxidation of hydrogen to hydrogen peroxide over a solid catalyst comprising palladium, which comprises: i) depositing on the solid catalyst at least two halogen containing compounds, one compound essentially comprising bromine and second compound essentially comprising fluorine with the bromine to palladium and fluorine to palladium atom ratios in the range from 0.02 to 20 and from 0.01 to 50, respectively; ii) decomposing the halo compounds deposited on the solid catalyst by calcination at a temperature above 200° C. under inert, reducing or oxidizing gas atmosphere or under vacuum; and iii) contacting the solid catalyst obtained from step (ii) with a gas mixture consisting of hydrogen and oxygen or air or O2 enriched air in an aqueous reaction medium, comprising a mineral acid at the following reaction conditions: concentration of mineral acid in the reaction medium above 0.001 mol/dm3, concentration of the solid catalyst in the reaction medium above 0.01 g/dm3, H2/O2 mole ratio in the gas mixture in the range from 0.01 to 10, flow rate of the gas mixture in the range from 50 cm3/g catalyst/h to 50,000 cm3/g catalyst/h, gas pressure at least 0.9 atm, and temperature below 100° C. and contact period of the reaction medium at least 0.01 h, is disclosed.
摘要翻译：一种用于在包含钯的固体催化剂中将氢气直接氧化成过氧化氢的过氧化氢的选择性和产率大大提高的方法，其包括：i）在固体催化剂上沉积至少两种含卤素的化合物，一种化合物基本上包含溴和第二化合物，其主要包含氟，溴与钯和氟与钯的比例分别为0.02至20和0.01至50; ii）通过在惰性，还原或氧化气体气氛或真空下在高于200℃的温度下煅烧来分解沉积在固体催化剂上的卤代化合物; 和iii）将由步骤（ii）获得的固体催化剂与由氢气和氧气组成的气体混合物或空气或富含O 2的空气在含水反应介质中接触，所述反应介质在下列反应中包含无机酸条件：反应介质中无机酸的浓度高于0.001mol / dm 3，反应介质中的固体催化剂浓度高于0.01g / dm 3，H

2. 发明授权

US07157071B2 Process for preparing hydrogen peroxide 失效
公开(公告)号：US07157071B2
公开(公告)日：2007-01-02
申请号：US10879501
申请日：2004-06-30
申请人： Vasant Ramchandra Choudhary , Chanchal Samanta , Prabhas Jana
发明人： Vasant Ramchandra Choudhary , Chanchal Samanta , Prabhas Jana
IPC分类号： C01B15/01
CPC分类号： C01B15/01
摘要： The present invention discloses a process for the production of hydrogen peroxide from hydrazine hydrate or hydrazine salt, represented by a general formula: N2H4.nX, wherein, X is H2O, H2SO4, HNO3, HCl, HBr, HI or CH3COOH; n is 0.5, 1 or 2; N is nitrogen; H is hydrogen; S is sulfur; Cl is chlorine; Br is bromine; and I is iodine, by its liquid phase oxidation with oxygen, using a solid catalyst comprising palladium but with or without halogen promoter, in an aqueous reaction medium with or without comprising a mineral acid and/or halide anions, which comprises: i) contacting the solid catalyst with a hydrazine hydrate or hydrazine salt and oxygen containing gas selected from oxygen, air and oxygen enriched air, in aqueous reaction medium at the following reaction conditions: the concentration of hydrazine hydrate or hydrazine salt in the reaction medium above 0.001 mol/dm3, the concentration of mineral acid in the reaction medium in the range from zero mol/dm3 to 10 mol/dm3, the concentration of halide anions added to the reaction medium in the range from zero mmol/dm3 to 100 mmol/dm3, the concentration of the solid catalyst in the reaction medium in the range from 0.01 g/dm3 to 100 g/dm3, the space velocity of the oxygen containing gas in the range from 100 cm3/g catalyst/h to 100,000 cm3/g catalyst/h, the mass ratio of hydrazine hydrate or hydrazine salt to solid catalyst in the range from 0.01 to 100, the temperature below 100° C., the pressure at least 0.95 atm, and the reaction contact time above 0.02 h; and ii) separating the H2O2 from the reaction mixture.

3. 发明授权

US07432222B2 High temperature stable non-noble metal catalyst, process for production of syngas using said catalyst 失效
标题翻译：高温稳定的非贵金属催化剂，使用所述催化剂生产合成气的方法
公开(公告)号：US07432222B2
公开(公告)日：2008-10-07
申请号：US10978791
申请日：2004-11-01
申请人： Vasant Ramchandra Choudhary , Kartick Chandra Mondal , Ajit Singh Mamman
发明人： Vasant Ramchandra Choudhary , Kartick Chandra Mondal , Ajit Singh Mamman
IPC分类号： B01J23/00 , C01B3/26 , C01B3/28
CPC分类号： C01B3/386 , B01J21/066 , B01J23/002 , B01J23/83 , B01J35/1009 , B01J37/0201 , B01J2523/00 , C01B2203/0261 , C01B2203/1041 , C01B2203/1052 , C01B2203/1058 , C01B2203/1241 , Y02P20/142 , Y02P20/52 , B01J2523/17 , B01J2523/22 , B01J2523/36 , B01J2523/3712 , B01J2523/847 , B01J2523/845
摘要： This invention discloses a high temperature stable, supported, non-noble metal catalyst, represented by a general formula: NiCoaCebMgcYdOx(y)/S, wherein S is a low surface area, macroporous, highly sintered, solid support comprising zirconium and hafnium oxides with less than 3 wt % silica and/or alumina having a surface area less than 1.0 m2/g and pore diameter greater than 0.1 micron, in the form of pellet, ring, monolith or granules; a is from 0.01 to 10; b is from 0.001 to 10; c is from 0.001 to 10; d is from 0.005 to 5; x is number of oxygen atoms required to fulfill the valance requirement of the metallic elements; and y is weight percent loading of the active catalyst mass, on the support, S, in the range from 0.7% to 70%. The invention also discloses a process for the partial oxidation of hydrocarbon(s) to syngas using the thermally stable catalyst.
摘要翻译：本发明公开了一种高温稳定的，负载型的非贵金属催化剂，由以下通式表示：NiCo a S a B b Mg C y （y）/ S，其中S是低表面积，大孔，高度烧结的固体载体，其包含锆和氧化铪，具有小于3重量％的二氧化硅和/或表面积小于1.0m 2 / g且孔径大于0.1微米的氧化铝，以颗粒，环，整料或颗粒的形式; a为0.01〜10; b为0.001〜10; c为0.001〜10; d为0.005〜5; x是满足金属元素的价格要求所需的氧原子数; y是活性催化剂物质在载体上的重量百分比，S在0.7％至70％的范围内。本发明还公开了一种使用热稳定催化剂将烃部分氧化成合成气的方法。

4. 发明授权

US06534440B2 Process for the activation of a metallic palladium based catalyst useful for the direct oxidation of hydrogen to hydrogen peroxide 失效
公开(公告)号：US06534440B2
公开(公告)日：2003-03-18
申请号：US09725640
申请日：2000-11-29
申请人： Vasant Ramchandra Choudhary , Abaji Govind Gaikwad , Subhash Dwarkanath Sansare
发明人： Vasant Ramchandra Choudhary , Abaji Govind Gaikwad , Subhash Dwarkanath Sansare
IPC分类号： B01J2344
CPC分类号： B01J23/44 , B01J21/04 , B01J21/18 , B01J23/40 , B01J23/63 , B01J37/12 , C01B15/029
摘要： This invention provides a process for the activation of a metallic palladium containing catalyst which is useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, by treating the catalyst with an oxidising agent in order to at least partially oxidise the metallic palladium contained in the catalyst to palladium (TT) oxide. The selectivity and yield of the catalyst for hydrogen peroxide are observed to increase substantially and the hydrogen peroxide decomposition activity of the catalyst is drastically reduced.

5. 发明授权

US06420596B1 Process for the selective esterification of tertiary alcohol by an acid anhydride using a reusable solid catalyst 失效
标题翻译：使用可重复使用的固体催化剂通过酸酐选择性酯化叔醇的方法
公开(公告)号：US06420596B1
公开(公告)日：2002-07-16
申请号：US09725642
申请日：2000-11-29
申请人： Vasant Ramchandra Choudhary , Kshudiram Mantri , Suman Kumar Jana
发明人： Vasant Ramchandra Choudhary , Kshudiram Mantri , Suman Kumar Jana
IPC分类号： C07C6702
CPC分类号： C07C67/08 , C07C69/003 , C07C69/14 , C07C69/157 , C07C69/78
摘要： This invention provides a process for the selective esterfication of a tertiary alcohol(I) by an acid anhydride(II) to produce corresponding tertiary ester(III) and carboxylic acid(V), using a reusable solid catalyst(IV) comprising one or more halides of indium, gallium, zinc and iron. The process comprises: (i) contacting a mixture of (I) and (II) in the absence or presence of a non aqueous solvent with the fine particles of (IV) in a stirred batch reactor provided with a reflux water condenser at atmospheric pressure at the reaction conditions, such that the mole ratio of (II) to (I) is in the range from about 0.1 to about 10.0; the weight ratio of (IV) to (I+II) is in the range from about 0.005 to about 0.5; the reaction temperature is below about 80° C., and the reaction period is in the range from about 0.1 h to about 50 h; (ii) removing the solid catalyst(IV) from the reaction mixture by filtration; and (iii) reusing the separated solid catalyst for subsequent batch of the process.
摘要翻译：本发明提供一种通过酸酐（II）选择性酯化叔醇（I）以产生相应的叔酯（III）和羧酸（V）的方法，使用包含一种或多种的可重复使用的固体催化剂（IV）铟，镓，锌和铁的卤化物。该方法包括：（i）在不存在或不存在非水溶剂的情况下，将（I）和（II）的混合物与（IV）的细颗粒在设置有回流水冷凝器的搅拌间歇反应器中在大气压下接触在反应条件下使得（II）与（I）的摩尔比在约0.1至约10.0的范围内; （IV）至（I + II）的重量比在约0.005至约0.5的范围内; 反应温度低于约80℃，反应时间为约0.1小时至约50小时; （ii）通过过滤从反应混合物中除去固体催化剂（IV）; 和（iii）将分离的固体催化剂重新用于后续批次的方法。

6. 发明授权

US06180557B2 Supported catalyst useful for Friedel-Crafts reactions and process for the preparation of aralkylated aromatic compounds using the catalyst 失效
标题翻译：用于Friedel-Crafts反应的负载催化剂和使用催化剂制备芳烷基化芳族化合物的方法
公开(公告)号：US06180557B2
公开(公告)日：2001-01-30
申请号：US09209834
申请日：1998-12-11
申请人： Vasant Ramchandra Choudhary , Suman Kumar Jana , B-Phani Kiran
发明人： Vasant Ramchandra Choudhary , Suman Kumar Jana , B-Phani Kiran
IPC分类号： B01J2706
CPC分类号： B01J27/125 , B01J23/08 , B01J27/128 , C07C45/46
摘要： A supported catalyst and a process for the preparation of the catalyst, the catalyst containing mixed metal oxides or halides deposited on porous catalyst carriers or supports, useful for heterogeneously or solid catalyzed Friedel-Crafts reactions such as alkylation, aralkylation, acylation, or aroylation of aromatic compounds in the preparation of fine chemicals. The supported catalyst has high activity for the Friedel-Crafts reactions when the aromatic ring activating groups are present in the aromatic ring to be aralkylated, acylated or aroylated, and also when the ring activating group is absent or when aromatic ring deactivating groups are present in the aromatic ring to aralkylated, acylated or aroylated, so that the reaction temperature is low and/or the time for completing the reaction is short. The catalyst can be separated and used repeatedly for catalytic reactions.
摘要翻译：负载催化剂和催化剂的制备方法，催化剂含有沉积在多孔催化剂载体或载体上的混合金属氧化物或卤化物，可用于非均相或固体催化的Friedel-Crafts反应，例如烷基化，芳烷基化，酰化或芳基化芳香族化合物在精细化学品的制备中。当芳环活性基团存在于待芳烷基化，酰化或酰化的芳环中时，以及当环活化基团不存在或芳环失活基团存在时，负载型催化剂对于Friedel-Crafts反应具有高活性芳环进行芳烷基化，酰化或丙烯酰化，使反应温度低，和/或完成反应的时间短。催化剂可以分离并重复使用用于催化反应。

7. 发明授权

US5744419A Process for the preparation of an improved supported catalyst, containing nickel and cobalt, with or without noble metals, useful for the oxidative conversion of methane, natural gas and biogas to syngas 失效
标题翻译：用于制备含有或不含贵金属的镍和钴的改进的负载催化剂的方法，其用于将甲烷，天然气和沼气氧化转化为合成气
公开(公告)号：US5744419A
公开(公告)日：1998-04-28
申请号：US517213
申请日：1995-08-21
申请人： Vasant Ramchandra Choudhary , Balu Shivaji Uphade , Ajit Singh Mamman , Amarjeet Munshiram Rajput
发明人： Vasant Ramchandra Choudhary , Balu Shivaji Uphade , Ajit Singh Mamman , Amarjeet Munshiram Rajput
IPC分类号： B01J23/755 , B01J23/78 , B01J23/89 , B01J37/02 , C01B3/38 , C01B3/40 , B01J23/40 , B01J23/58 , B01J23/72
CPC分类号： B01J37/024 , B01J23/755 , B01J23/78 , B01J23/8946 , C01B3/386 , C01B3/40 , C01B2203/0233 , C01B2203/0238 , C01B2203/0261 , C01B2203/1017 , C01B2203/1052 , C01B2203/1064 , C01B2203/1082 , C01B2203/1241 , C01B2203/1619 , Y02P20/142 , Y02P20/52
摘要： A supported catalyst is prepared by depositing oxides of nickel and cobalt, with or without noble metals, on a sintered low surface area porous inert support, surface of which is precoated with an oxide of Be, Mg, Ca or a mixture thereof so that a protective layer of the alkaline earth oxide is formed between the oxides of nickel and cobalt, with or without noble metal, and the support and hence direct chemical interactions between the oxides of the group VIII transition metals and the reactive components of support, which leads to the formation of catalytically inactive binary oxide phases are avoided.
摘要翻译：通过在具有或不含有贵金属的镍和钴的氧化物上沉积有烧结的低表面积的多孔惰性载体，其表面用Be，Mg，Ca或其混合物的氧化物预涂布来制备负载型催化剂，使得在具有或不具有贵金属的镍和钴的氧化物之间形成碱土金属氧化物的保护层，以及由第VIII族过渡金属的氧化物和载体的反应性组分之间的载体和因此的直接化学相互作用，这导致避免了催化无活性的二元氧化物相的形成。

8. 发明授权

US07022888B2 Process for the simultaneous conversion of methane and organic oxygenate to C2 to C10 hydrocarbons 失效
标题翻译：将甲烷和有机含氧化合物同时转化为C2至C10烃的方法
公开(公告)号：US07022888B2
公开(公告)日：2006-04-04
申请号：US10397849
申请日：2003-03-27
申请人： Vasant Ramchandra Choudhary , Kartick Chandra Mondal , Shafeek Abdul Rashid Mulla
发明人： Vasant Ramchandra Choudhary , Kartick Chandra Mondal , Shafeek Abdul Rashid Mulla
IPC分类号： C07C1/20
CPC分类号： C07C1/20 , C07C2/76 , C07C2529/40 , C07C2529/87 , Y10S585/943 , C07C15/02
摘要： A process for the non-oxidative conversion of methane simultaneously with the conversion of an organic oxygenate, represented by a general formula: CnH2n+1OCmH2m+1, wherein C, H and O are carbon, hydrogen and oxygen elements, respectively; n is an integer having a value between 1 and 4; and m is an integer having a value between zero and 4, to C2+ hydrocarbons, particularly to gasoline range C6–C10 hydrocarbons and hydrogen, using a bifunctional pentasil zeolite catalyst, having strong acid and dehydrogenation functions, at a temperature below 700° C. is disclosed. In this process the moles of methane converted per mole of oxygenate converted is above 1.0, depending upon the process conditions.
摘要翻译：一种用于通过有机含氧化合物的转化同时进行甲烷的非氧化转化的方法，其由以下通式表示：C n H 2n + 1 C m 其中C，H和O分别为碳，氢和氧元素; n是1到4之间的整数; 并且m是具有0至4之间的值的整数，至C 2 + C 2烃，特别是汽油范围C 6 -C 10烃和在低于700℃的温度下使用具有强酸和脱氢功能的双官能pentasil沸石催化剂的氢。在这个过程中，转化的每摩尔含氧化合物转化的甲烷的摩尔数大于1.0，这取决于工艺条件。

9. 发明授权

US06984760B2 Acylation of aromatic compounds 失效
标题翻译：芳香化合物的酰化
公开(公告)号：US06984760B2
公开(公告)日：2006-01-10
申请号：US10814849
申请日：2004-03-31
申请人： Vasant Ramchandra Choudhary , Rani Jha
发明人： Vasant Ramchandra Choudhary , Rani Jha
IPC分类号： C07C45/54
CPC分类号： C07C45/46 , C07C201/12 , Y02P20/584 , C07C49/788 , C07C49/84 , C07C49/784 , C07C49/786 , C07C205/45
摘要： This invention particularly relates to a process for the acylation of aromatic compounds by an acylating agent for preparing corresponding acylated aromatic compounds, using a solid catalyst.
摘要翻译：本发明特别涉及使用固体催化剂通过酰化剂酰化芳族化合物以制备相应的酰化芳族化合物的方法。

10. 发明授权

US06293979B1 Process for the catalytic conversion of methane or natural gas to syngas or a mixture of carbon monoxide and hydrogen 失效
标题翻译：将甲烷或天然气催化转化为合成气或一氧化碳和氢气的混合物的方法
公开(公告)号：US06293979B1
公开(公告)日：2001-09-25
申请号：US09020115
申请日：1998-02-06
申请人： Vasant Ramchandra Choudhary , Balu Shivaji Uphade , Ajit Singh Mamman , Amarjeet Munshiram Rajput
发明人： Vasant Ramchandra Choudhary , Balu Shivaji Uphade , Ajit Singh Mamman , Amarjeet Munshiram Rajput
IPC分类号： C01B326
CPC分类号： C01B3/386 , B01J23/755 , B01J23/78 , B01J23/8946 , B01J37/024 , C01B3/40 , C01B2203/0233 , C01B2203/0238 , C01B2203/0261 , C01B2203/1017 , C01B2203/1052 , C01B2203/1064 , C01B2203/1082 , C01B2203/1241 , C01B2203/1619 , Y02P20/142 , Y02P20/52
摘要： A process for catalytic conversion of methane or natural gas to syngas using a supported catalyst containing oxides of nickel and cobalt with of without noble metals. Efficiency of the catalytic process is increased by simultaneously carrying out an exothermic oxidation reaction and an endothermic steam and carbon dioxide reforming reaction over the supported catalyst. The catalyst is prepared by depositing oxides of nickel and cobalt, with or without noble metals, on a sintered low surface area porous inert support. Surface of the support is precoated with an oxide of Be, Mg, Ca or a mixture thereof so that a protective layer of alkaline earth oxide is formed between the oxides of nickel and cobalt and the support, and hence, direct chemical interactions between the oxides of nickel and cobalt and reactive components of the support, which leads to formation of catalytically inactive binary oxide phases, are avoided.
摘要翻译：使用含有不含贵金属的镍和钴的氧化物的负载催化剂将甲烷或天然气催化转化为合成气的方法。通过在负载的催化剂上同时进行放热氧化反应和吸热蒸汽和二氧化碳重整反应来提高催化过程的效率。催化剂是通过在低烧结表面积的多孔惰性载体上沉积具有或不含贵金属的镍和钴的氧化物来制备的。载体的表面用Be，Mg，Ca或其混合物的氧化物预涂覆，使得在镍和钴的氧化物和载体之间形成碱土金属氧化物的保护层，因此在氧化物之间形成直接的化学相互作用的镍和钴以及载体的反应性组分，这导致形成催化无活性的二元氧化物相。

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