公开(公告)号：US4831164A

公开(公告)日：1989-05-16

申请号：US180061

申请日：1988-04-11

申请人： Ramzi Y. Saleh ,  Israel E. Wachs

发明人： Ramzi Y. Saleh ,  Israel E. Wachs

IPC分类号： B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/265 ,  C07C51/31

CPC分类号： C07C51/313 ,  B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/252 ,  C07C51/265

摘要： In accordance with the process of this invention, an improved catalyst for molecular oxidation of hydrocarbons to form the corresponding carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide catalyst solids in the anatase form a continuous monolayer amount of at least one source of titanium oxide, calcining the thus-formed catalyst percursor under conditions sufficient to convert the titanium oxide source into the oxide form, depositing upon the calcined catalyst precursor a continuous monolayer amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

摘要翻译： 根据本发明的方法，通过以下步骤制备用于分子氧化烃形成相应的羧酸酐的改进的催化剂：通过在锐钛矿上沉积二氧化钛催化剂固体形成连续单层量的 至少一种氧化钛来源，在足以将氧化钛源转化为氧化物形式的条件下煅烧由此形成的催化剂过氧化物，在煅烧的催化剂前体上沉积连续的单层量的至少一种可转化为氧化钒的钒化合物 在足以将钒化合物转化为氧化钒的条件下加热和煅烧钒沉积固体。

公开(公告)号：US4791092A

公开(公告)日：1988-12-13

申请号：US796707

申请日：1985-11-12

申请人： Israel E. Wachs ,  Ramzi Y. Saleh ,  Claudio C. Chersich

发明人： Israel E. Wachs ,  Ramzi Y. Saleh ,  Claudio C. Chersich

IPC分类号： B01J23/20 ,  B01J23/22 ,  B01J37/02 ,  C07C51/265 ,  B01J21/06

CPC分类号： C07C51/265 ,  B01J23/20 ,  B01J23/22 ,  B01J37/024

摘要： In accordance with the process of this invention, an improved catalyst for molecular oxidation of an aromatic hydrocarbon to form the corresponding aromatc carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a discontinuous monolayer amount of at least one source of tantalum oxide, calcining the thus-formed catalyst precursor under conditions sufficient to convert the tantalum oxide source into the oxide form, depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

摘要翻译： 根据本发明的方法，通过以下步骤制备用于分子氧化芳族烃以形成相应的芳族羧酸酐的改进的催化剂：通过以锐钛矿形式的二氧化钛固体沉积形成不连续单层量形成催化剂前体 的至少一种氧化钽源，在足以将氧化钽源转化为氧化物形式的条件下煅烧如此形成的催化剂前体，在煅烧的催化剂前体上沉积催化有效量的至少一种钒化合物，其可转化为 氧化钒加热并在足以将钒化合物转化为氧化钒的条件下煅烧钒沉积固体。

公开(公告)号：US4608359A

公开(公告)日：1986-08-26

申请号：US759669

申请日：1985-07-29

申请人： Israel E. Wachs ,  Rocco A. Fiato ,  Claudio C. Chersich

发明人： Israel E. Wachs ,  Rocco A. Fiato ,  Claudio C. Chersich

IPC分类号： B01J27/22 ,  C07C1/04 ,  B01J21/06 ,  B01J23/20

CPC分类号： C07C1/044 ,  B01J27/22 ,  C07C1/0445 ,  C07C2521/06 ,  C07C2523/20 ,  C07C2523/22 ,  C07C2527/22

摘要： Catalysts comprising iron carbide on a surface modified titania support wherein said support comprises a surface modifying oxide of tantalum, niobium, vanadium and mixtures thereof supported on said titania wherein at least a portion of said surface modifying oxide is in a non-crystalline form. These catalysts are useful for Fischer-Tropsch hydrocarbon synthesis reactions. Preferably, at least about 25 wt. % of said surface modifying oxide will be in a non-crystalline form.

摘要翻译： 在表面改性的二氧化钛载体上包含碳化铁的催化剂，其中所述载体包括负载在所述二氧化钛上的钽，铌，钒及其混合物的表面改性氧化物，其中所述表面改性氧化物的至少一部分是非结晶形式。 这些催化剂可用于费托烃合成反应。 优选地，至少约25wt。 所述表面改性氧化物的％将为非晶态。

公开(公告)号：US06559345B2

公开(公告)日：2003-05-06

申请号：US09950832

申请日：2001-09-13

申请人： Israel E. Wachs

发明人： Israel E. Wachs

IPC分类号： C07C4529

CPC分类号： B01J35/0006 ,  B01J23/22 ,  B01J23/28 ,  C07C45/38 ,  C07C47/04

摘要： A process and apparatus for oxidizing methanol in a gas stream into formaldehyde in a fixed bed reactor. The process first introduces a gas stream into a fixed bed reactor. The fixed bed reactor contains a catalyst bed having a depth, a width, a length, an inlet, an upstream region, a downstream region and an outlet. Preferably, the inlet, the upstream region, the downstream region and the outlet are provided in the order stated. A vanadia-titania catalyst is provided in the upstream region and a molybdena-titania catalyst is provided in the downstream region. The vanadia-titania catalyst in the upstream region is substantially free of MoO3 and initially (i.e., during oxidation some V2O5 may sublime and migrate to the downstream region) the molybdena-titania catalyst in the downstream region is substantially free of V2O5. Next, the gas stream is contacted with the vanadia-titania catalyst under oxidizing conditions. Then, the gas stream is contacted with a molybdena-titania catalyst under oxidizing conditions which provides a product stream containing formaldehyde at the desired conversion and formaldehyde selectivity.

公开(公告)号：US06497855B1

公开(公告)日：2002-12-24

申请号：US09576222

申请日：2000-05-22

申请人： Israel E. Wachs

发明人： Israel E. Wachs

IPC分类号： C01B306

CPC分类号： B01J23/22 ,  C01B3/06 ,  C01B17/508 ,  Y02E60/364

摘要： A process is provided for the production of hydrogen from hydrogen sulfide by reacting carbon monoxide with hydrogen sulfide to produce hydrogen and carbonyl sulfide, and then reacting the carbonyl sulfide with oxygen to produce carbon monoxide and sulfur dioxide. The carbon monoxide is recycled back to the hydrogen sulfide reaction step. The catalyst used to promote the reaction between carbonyl sulfide and oxygen is an oxide of a metal, such as V, Nb, Mo, Cr, Re, Ti, W, Mn or Ta, which is supported on a support, such as TiO2, ZrO2, CeO2, Nb2O5 and Al2O3.

摘要翻译： 提供了一种通过使一氧化碳与硫化氢反应产生氢和硫化羰，然后使羰基硫与氧气反应产生一氧化碳和二氧化硫从硫化氢中生产氢的方法。 一氧化碳被循环回到硫化氢反应步骤。 用于促进羰基硫和氧之间的反应的催化剂是负载在诸如TiO 2的载体上的诸如V，Nb，Mo，Cr，Re，Ti，W，Mn或Ta的金属的氧化物， ZrO2，CeO2，Nb2O5和Al2O3。

公开(公告)号：US06350918B2

公开(公告)日：2002-02-26

申请号：US09835575

申请日：2001-04-17

申请人： Israel E. Wachs ,  Yeping Cai

发明人： Israel E. Wachs ,  Yeping Cai

IPC分类号： C07C4529

CPC分类号： C07C45/38 ,  B01J23/24 ,  B01J23/32 ,  B01J35/0006 ,  B01J37/0081 ,  C07C47/04

摘要： Preparing an aldehyde from an alcohol by contacting the alcohol in the presence of oxygen with a catalyst prepared by contacting an intimate mixture containing metal oxide support particles and particles of a catalytically active metal oxide from Groups VA, VIA, or VIIA, with a gaseous stream containing an alcohol to cause metal oxide from the discrete catalytically active metal oxide particles to migrate to the metal oxide support particles and to form a monolayer of catalytically active metal oxide on said metal oxide support particles.

摘要翻译： 通过在氧气存在下使醇与通过使含有金属氧化物载体颗粒的紧密混合物和来自VA，VIA或VIIA族的催化活性金属氧化物颗粒的气态流与气体流接触而制备的催化剂从醇制备醛 含有醇以使离散的催化活性金属氧化物颗粒的金属氧化物迁移至金属氧化物载体颗粒并在所述金属氧化物载体颗粒上形成催化活性金属氧化物的单层。

公开(公告)号：US4855457A

公开(公告)日：1989-08-08

申请号：US135823

申请日：1987-12-21

申请人： Saleh Y. Ramzi ,  Israel E. Wachs

发明人： Saleh Y. Ramzi ,  Israel E. Wachs

IPC分类号： B01J21/06 ,  B01J23/22 ,  B01J23/847 ,  B01J27/02 ,  B01J27/198 ,  C07C51/265

CPC分类号： B01J21/063 ,  B01J23/002 ,  B01J23/22 ,  B01J23/8472 ,  B01J27/02 ,  B01J27/198 ,  C07C51/265 ,  B01J2523/00

摘要： In accordance with the process of this invention, an improved catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form at least a monolayer amount of at least one vanadium oxide source which is convertible to vanadium oxide upon calcining; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the tantalum oxide source into the oxide form; (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating and at least one metal oxide source selected from the group consisting of oxides of Sb, Ga, Ge, In, T.sub.1, Pb, Se, Te, P and Bi, which is convertible into the corresponding metal oxide upon heating and which is reactive with V.sub.2 O.sub.5 ; and (d) calcining the vanadium and reactive metal-containing catalyst solids under conditions sufficient to form the corresponding vanadium oxide and reactive metal oxides.The vanadium source and reactive metal source are employed in amounts sufficient to provide a molar ratio of vanadium to reactive metal of at least about 1:1, and preferably from about 1:1 to 6:1 gram atoms of vanadium per gram atom of reactive metal in the total catyalst, and wherein the combined weight percent of vanadium and the reactive metal (based on the oxides thereof), based on total catalyst weight is about 5 to 10 wt. %, and preferably from about 6 to 8 wt. %.Preferably, the catalysts of the present invention are prepared by depositing on the calcined catalyst precursor, i.e. in step (c) above, sources of vanadium and reactive metal oxides in amounts sufficient to provide a molar ratio of vanadium deposited in step (c) to the reactive metal which is co-deposited therewith of at least about 1:1, and preferably from about 1:1 to about 4:1, gram atoms of vanadium per gram atom of the reactive metal; and wherein the combined weight percent, based on total catalyst weight, of vanadium added in step (c) and reactive metal co-deposited therewith (based on the oxides thereof) is from about 3 to about 9 wt. %, and more preferably from about 4 to about 6 wt. %.

公开(公告)号：US4814317A

公开(公告)日：1989-03-21

申请号：US102164

申请日：1987-09-29

申请人： Ramzi Y. Saleh ,  Israel E. Wachs

发明人： Ramzi Y. Saleh ,  Israel E. Wachs

IPC分类号： B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/265 ,  C07C51/31 ,  B01J21/06

CPC分类号： C07C51/313 ,  B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/252 ,  C07C51/265

摘要： In accordance with the process of this invention, an improved catalyst for molecular oxidation of an aromatic hydrocarbon to form the corresponding aromatic carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a continuous monolayer amount of at least one source of zirconium dioxide, calcining the thus-formed catalyst precursor under conditions sufficient to convert the zirconium oxide source into the oxide form, depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

摘要翻译： 根据本发明的方法，通过以下步骤制备用于分子氧化芳族烃以形成相应的芳族羧酸酐的改进的催化剂：通过以锐钛矿形式的二氧化钛固体沉积形成连续单层量形成催化剂前体 的至少一种二氧化锆源，在足以将氧化锆源转化为氧化物形式的条件下煅烧由此形成的催化剂前体，在煅烧的催化剂前体上沉积催化有效量的至少一种钒化合物，其可转化为 氧化钒加热并在足以将钒化合物转化为氧化钒的条件下煅烧钒沉积固体。

公开(公告)号：US4570020A

公开(公告)日：1986-02-11

申请号：US626065

申请日：1984-06-29

申请人： Charles T. Ratcliffe ,  Petrus J. Tromp ,  Israel E. Wachs

发明人： Charles T. Ratcliffe ,  Petrus J. Tromp ,  Israel E. Wachs

IPC分类号： C07C149/06 ,  C07C149/10

CPC分类号： C07C321/00

摘要： Methanethiol is produced from a gaseous feed comprising a mixture of H.sub.2 S and CO by contacting said feed, at a temperature of at least about 225.degree. C., with a catalyst comprising an oxide of a metal selected from the group consisting of V, Nb, and Ta and mixtures thereof, preferably V, supported on titania and wherein at least a portion, and preferably at least about 25 wt. %, of said supported oxide is in a non-crystalline form.

摘要翻译： 通过在至少约225℃的温度下使所述进料与包含选自V，Nb，Nb的金属的氧化物的催化剂接触，由包含H 2 S和CO的混合物的气态进料生产甲硫醇， 和Ta及其混合物，优选V，负载在二氧化钛上，并且其中至少一部分，优选至少约25wt。 所述负载型氧化物的％为非晶态。

公开(公告)号：US20110059842A1

公开(公告)日：2011-03-10

申请号：US12665692

申请日：2008-06-20

申请人： Israel E. Wachs ,  Elizabeth I. Ross-Medgaarden ,  Michael Sha-nang Wong

发明人： Israel E. Wachs ,  Elizabeth I. Ross-Medgaarden ,  Michael Sha-nang Wong

IPC分类号： B01J23/30 ,  B01J21/06 ,  B01J37/02 ,  B01J37/08 ,  B82Y30/00

CPC分类号： C01G41/00 ,  B01J23/30 ,  B01J35/002 ,  B01J35/10 ,  B01J37/0203 ,  B01J37/0205 ,  B82Y30/00 ,  C01G25/02 ,  C01G41/02 ,  C01P2002/82 ,  C01P2002/84 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/12

摘要： A new type of solid acid catalyst, which promises better catalytic performance than conventionally prepared supported metal oxides due to its precisely synthesized nanostructure has been described. The catalyst is nanoparticulate in form and is comprised of monolayers of tungstated zirconia of the formula, WOxZryO4-2y made by impregnating a support with zirconium and tungsten. The support catalyst is further characterized in having a tugsten monolayer between greater than 0001 W/nm2 to about 30 W/nm2.

摘要翻译： 已经描述了一种新型的固体酸催化剂，其由于其精确合成的纳米结构而具有比常规制备的负载型金属氧化物更好的催化性能。 该催化剂是纳米颗粒形式，并且由下式的钨酸氧化锆单层组成：WOxZryO4-2y，其通过用锆和钨浸渍载体而制得。 载体催化剂的特征还在于具有大于0001W / nm 2至约30W / nm 2之间的钨单层。