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.

公开(公告)号：US06930072B2

公开(公告)日：2005-08-16

申请号：US10385708

申请日：2003-03-12

申请人： Israel E. Wachs ,  Ray P. Bourne

发明人： Israel E. Wachs ,  Ray P. Bourne

IPC分类号： C07C45/38 ,  C07C47/052 ,  B01J21/06 ,  B01J23/22 ,  B01J23/28

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.

摘要翻译： 一种方法和催化剂反应区，包括一个或多个固定床反应器，用于将反应物气体进料流中的甲醇氧化成甲醛。 根据一个实施方案，该方法包括在氧化条件下将反应物气体进料流引入到含有氧化钒 - 二氧化钛第一催化剂（基本上不含挥发性MoO 3 N 3种）的上游区域中以形成部分氧化的 然后将其在氧化条件下引入含有钼酸金属金属催化剂的下游区域，以进一步氧化其中所含的任何残余甲醇。 根据另一个实施方案，使用包含分别含有上述氧化钒 - 二氧化钛和金属钼酸盐催化剂的上游区域和下游区域的固定床反应器来实施本发明方法，以产生含有甲醛的产物气流，优选以 85％以上，选择性为90％以上。

公开(公告)号：US08455392B2

公开(公告)日：2013-06-04

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： B01J23/00 ,  C01G25/02 ,  C01G41/02

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。

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）。

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。

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。

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。

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.

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）。

公开(公告)号：US5907066A

公开(公告)日：1999-05-25

申请号：US943217

申请日：1997-10-06

申请人： Israel E. Wachs

发明人： Israel E. Wachs

IPC分类号： B01D53/86 ,  B01J37/02 ,  C07C45/38 ,  D21C11/06 ,  C07C45/00

CPC分类号： D21C11/06 ,  B01D53/8668 ,  B01J37/0215 ,  C07C45/38

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 certain supported metal oxides 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 (CH.sub.2 O).

摘要翻译： 一种方法，其中含有甲醇的废气流，例如含有甲醇和其它废产物（包括甲硫醇）的纸浆磨废料流在含氧化剂存在下与包含某些负载的金属氧化物的催化剂接触; 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）。