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    Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum
    2.
    发明授权
    Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum 失效
    催化剂包括用钒，铌或钽的VA族氧化物改性的二氧化钛上的钌

    公开(公告)号：US4861747A

    公开(公告)日：1989-08-29

    申请号：US34492

    申请日：1987-04-03

    申请人： Israel E. Wachs ,  Darchun B. Yang

    发明人： Israel E. Wachs ,  Darchun B. Yang

    IPC分类号： B01J23/648

    CPC分类号： B01J23/648

    摘要： Catalyst compositions comprising ruthenium supported on a surface modified titania support wherein said support comprises a surface modifying oxide of tantalum, niobium or mixture thereof, in a noncrystalline form, supported on said titania are useful for Fischer-Tropsch hydrocarbon synthesis reactions.

    摘要翻译： 包含负载在表面改性的二氧化钛载体上的钌的催化剂组合物，其中所述载体包含负载在所述二氧化钛上的非结晶形式的钽，铌或其混合物的表面改性氧化物可用于费 - 托合成反应。

    Production of formaldehyde from CH4 and H2S
    4.
    发明授权
    Production of formaldehyde from CH4 and H2S 失效
    从CH4和H2S生产甲醛

    公开(公告)号：US06683221B1

    公开(公告)日：2004-01-27

    申请号：US09937225

    申请日：2002-02-01

    申请人： Israel E. Wachs

    发明人： Israel E. Wachs

    IPC分类号： C07C4528

    CPC分类号： B01J23/20 ,  B01J21/063 ,  B01J21/066 ,  B01J21/08 ,  B01J23/24 ,  B01J23/36 ,  B01J35/023 ,  B01J37/0203 ,  B01J37/0209 ,  C07C45/27 ,  C07C45/32 ,  C07C45/49 ,  C07C319/02 ,  C07C319/14 ,  C07C47/04 ,  C07C321/04 ,  C07C321/14

    摘要： A method wherein a sour natural gas stream can be treated to produce primarily carbon monoxide from methane, and the carbon monoxide and hydrogensulfide are reacted to produce methyl mercaptans, (primarily methanethiol (CH3SH) and a small amount of dimethyl sulfide (CH3SCH3)). The methyl mercaptans preferably are passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH2O), and sulfur dioxide (SO2).

    摘要翻译： 一种方法，其中可以处理酸性天然气流以从甲烷主要产生一氧化碳，并使一氧化碳和硫化氢反应以产生甲硫醇（主要是甲硫醇（CH 3 SH）和少量二甲硫醚（CH 3 SCH 3））。 甲硫醇优选在氧化剂存在下与包含负载型金属氧化物或本体金属氧化物的催化剂接触并持续足以将至少一部分甲硫醇转化成甲醛（CH 2 O）的时间，以及 二氧化硫（SO2）。

    Vanadia-titania/metal-molybdate dual catalyst bed system and process using the same for methanol oxidation to formaldehyde
    5.
    发明授权
    Vanadia-titania/metal-molybdate dual catalyst bed system and process using the same for methanol oxidation to formaldehyde 失效

    公开(公告)号：US06552233B2

    公开(公告)日：2003-04-22

    申请号：US09950833

    申请日：2001-09-13

    申请人： Israel E. Wachs ,  Ray P. Bourne

    发明人： Israel E. Wachs ,  Ray P. Bourne

    IPC分类号： C07C4529

    CPC分类号： C07C45/38 ,  C07C47/04

    摘要： A process and a catalyst reaction zone comprising one or more fixed bed reactors for oxidizing methanol in a reactant gas feed stream to formaldehyde. According to one embodiment, the process comprises introducing the reactant gas feed stream into an upstream region containing a vanadia-titania first catalyst (substantially free of a volatile MoO3 species) under oxidizing conditions to form a partially oxidized reactant gas feed stream which is then introduced under oxidizing conditions into a downstream region containing a metal molybdate second catalyst to further oxidize any residual methanol contained therein. According to another embodiment, a fixed bed reactor comprising an upstream region and a downstream region containing the aforementioned vanadia-titania and metal molybdate catalysts, respectively, is utilized to implement the inventive process to yield a product gas stream containing formaldehyde preferably at a conversion of 85% or more and a selectivity of 90% or more.

    Production of formaldehyde from carbon oxides and H2S
    6.
    发明授权
    Production of formaldehyde from carbon oxides and H2S 失效
    从碳氧化物和H2S生产甲醛

    公开(公告)号：US06410793B1

    公开(公告)日：2002-06-25

    申请号：US09076005

    申请日：1998-05-12

    申请人： Israel E. Wachs

    发明人： Israel E. Wachs

    IPC分类号： C07C31902

    CPC分类号： C07C319/02 ,  C07C45/27 ,  C07C45/32 ,  C07C45/49 ,  C07C47/04 ,  C07C321/04

    摘要： A method wherein a gas stream containing carbon oxide and hydrogen sulfide is first passed in contact with a catalyst comprising a supported metal oxide of a metal selected from the group consisting of vanadium (V), niobium (Nb), molybdenum (Mo), chromium (Cr), rhenium (Re), tungsten (W), manganese (Mn), titanium (Ti), zirconium (Zr) and tantalum (Ta) and mixtures thereof to convert said carbon oxide and hydrogen sulfide to methyl mercaptans, (primarily methanethiol (CH3SH) and a small amount of dimethyl sulfide (CH3SCH3)), and the gas stream containing the methyl mercaptans are passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH2O), and sulfur dioxide (SO2).

    摘要翻译： 首先使含有碳氧化物和硫化氢的气流与包含选自钒（V​​），铌（Nb），钼（Mo），铬 （Cr），铼（Re），钨（W），锰（Mn），钛（Ti），锆（Zr）和钽（Ta）及其混合物，将所述碳氧化物和硫化氢转化为甲硫醇 甲硫醇（CH 3 SH）和少量的二甲基硫醚（CH 3 SCH 3）），并且含有甲硫醇的气流在包含负载型金属氧化物或本体金属氧化物的催化剂的存在下在氧化剂的存在下通过，并且 足以将至少一部分甲硫醇转化为甲醛（CH 2 O）和二氧化硫（SO 2）的时间。

    In-situ formation of metal-molybdate catalysts
    7.
    发明授权
    In-situ formation of metal-molybdate catalysts 失效
    原位形成金属钼酸盐催化剂

    公开(公告)号：US06331503B1

    公开(公告)日：2001-12-18

    申请号：US09287021

    申请日：1999-04-06

    申请人： Israel E. Wachs ,  Laura E. Briand

    发明人： Israel E. Wachs ,  Laura E. Briand

    IPC分类号： B01J2300

    CPC分类号： B01J38/04 ,  B01J23/881 ,  B01J23/94 ,  C07C45/38 ,  Y02P20/584 ,  C07C47/04

    摘要： The method of the present invention involves the in situ formation of metal-molybdate catalyst particles active for methanol oxidation to formaldehyde, with iron as an example, the catalyst is made by mixing particulate forms of Fe2O3 and MoO3 which form an active Fe2(MoO4)3/MoO3 component inside the reactor during methanol oxidation.

    摘要翻译： 本发明的方法涉及以甲醇氧化为甲醛的金属钼酸盐催化剂颗粒的原位形成，以铁为例，该催化剂通过混合形成活性Fe 2（MoO 4）的Fe 2 O 3和MoO 3的颗粒形式， 3 / MoO 3组分在反应器内甲醇氧化。

    Production of formaldehyde from CH.sub.4 and H.sub.2 S
    8.
    发明授权
    Production of formaldehyde from CH.sub.4 and H.sub.2 S 失效
    从CH4和H2S生产甲醛

    公开(公告)号：US6028228A

    公开(公告)日：2000-02-22

    申请号：US150097

    申请日：1998-09-09

    申请人： Israel E. Wachs

    发明人： Israel E. Wachs

    IPC分类号： B01J23/00 ,  C07C45/27 ,  C07C45/32 ,  C07C45/33 ,  C07C47/048 ,  C07C319/02 ,  C07C45/00 ,  C07C319/00

    CPC分类号： C07C319/02 ,  B01J23/002 ,  C07C45/27 ,  C07C45/32 ,  C07C45/33 ,  B01J2523/00

    摘要： A method wherein a sour natural gas stream can be treated to produce formaldehyde from methane and methyl mercaptans, (primarily methanethiol (CH.sub.3 SH) and a small amount of dimethyl sulfide (CH.sub.3 SCH.sub.3)) from hydrogen sulfide, and the methyl mercaptans preferably are passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH.sub.2 O), and sulfur dioxide (SO.sub.2).

    摘要翻译： 一种方法，其中可以处理酸性天然气流从甲烷和甲硫醇（主要是甲硫醇（CH 3 SH）和少量二甲硫醚（CH 3 SCH 3））从硫化氢中产生甲醛，并且甲硫醇优选地接触 在氧化剂存在下，将足够的甲基硫醇转化为甲醛（CH 2 O）和二氧化硫（SO 2）的时间的催化剂包含负载型金属氧化物或本体金属氧化物。

    Metal molybdate/iron-molybdate dual catalyst bed system and process using the same for methanol oxidation to formaldehyde
    9.
    发明授权
    Metal molybdate/iron-molybdate dual catalyst bed system and process using the same for methanol oxidation to formaldehyde 失效

    公开(公告)号：US06518463B2

    公开(公告)日：2003-02-11

    申请号：US09950834

    申请日：2001-09-13

    申请人： Israel E. Wachs ,  Laura Briand

    发明人： Israel E. Wachs ,  Laura Briand

    IPC分类号： C07C4229

    CPC分类号： C07C45/38 ,  C07C47/04

    摘要： A process and fixed bed reactor for oxidizing methanol in a reactant gas feed stream to formaldehyde. The process comprises introducing the reactant gas feed stream into an upstream region containing a first metal molybdate catalyst (substantially free of a volatile Mo/MoO3 species) under oxidizing conditions to form a partially oxidized reactant gas feed stream which is then introduced under oxidizing conditions into a downstream region containing a second metal molybdate catalyst to further oxidize any residual methanol contained therein. A fixed bed reactor comprising an upstream region and a downstream region containing the aforementioned first and second metal molybdate catalysts, respectively, is utilized to implement the inventive process to yield a product gas stream containing formaldehyde preferably at a conversion of 85% or more and a selectivity of 90% or more.

    Treating methanol containing waste gas streams
    10.
    发明授权
    Treating methanol containing waste gas streams 失效
    处理含甲醇的废气流

    公开(公告)号：US06198005B1

    公开(公告)日：2001-03-06

    申请号：US09294365

    申请日：1999-04-20

    申请人： Israel E. Wachs

    发明人： Israel E. Wachs

    IPC分类号： C07C4529

    CPC分类号： C07C45/27 ,  C07C45/38 ,  C07C47/04

    摘要： A method wherein a methanol-containing waste gas stream, such as a pulp mill waste stream which contains methanol and other waste products, including methyl mercaptans, is passed in contact with a catalyst comprising a supported or unsupported bulk metal oxide catalyst in the presence of an oxidizing agent; preferably the gas stream is contacted with the catalyst, in the presence of the oxidizing agent, for a time sufficient to convert at least a portion of the methanol to formaldehyde (CH2O).

    摘要翻译： 一种方法，其中含有甲醇的废气流，例如包含甲醇和其它废产物（包括甲硫醇）的纸浆厂废料流在包含负载或未负载的本体金属氧化物催化剂的催化剂的存在下与含有甲醇的废气流 氧化剂; 优选地，气流在氧化剂存在下与催化剂接触足够的时间以将至少一部分甲醇转化为甲醛（CH 2 O）。