Synthesis of caprolactam
    22.
    发明授权
    Synthesis of caprolactam 失效
    己内酰胺的合成

    公开(公告)号:US4927924A

    公开(公告)日:1990-05-22

    申请号:US338015

    申请日:1989-04-14

    摘要: A process is provided for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion is characterized by exceptionally high selectivity and reduced rate of catalyst aging, even at single pass conversion above 90 percent. The conversion catalyst is a medium pore size crystalline zeolite exemplified by ZSM-5 which has low acid activity. Recycling unconverted oxime provides excellent ultimate yield of caprolactam.

    摘要翻译: 提供了将环己酮肟催化转化成ε己内酰胺的方法。 该转化的特征在于特别高的选择性和降低的催化剂老化速率,甚至在单程转化率高于90%时。 转化催化剂是具有低酸活性的ZSM-5示例的中等孔径结晶沸石。 回收未转化的肟提供了极好的己内酰胺收率。

    Hydrogen regeneration of coke-selectivated crystalline aluminosilicate
catalyst
    23.
    发明授权
    Hydrogen regeneration of coke-selectivated crystalline aluminosilicate catalyst 失效
    焦炭选择性结晶硅铝酸盐催化剂的氢再生

    公开(公告)号:US4358395A

    公开(公告)日:1982-11-09

    申请号:US941606

    申请日:1978-09-11

    摘要: A method is provided for regeneration of a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate range of 1 to 12, which catalyst has undergone controlled precoking by exposing the same to a thermally decomposable organic compound at a temperature in excess of the decomposition temperature of said compound but less than about 1200.degree. F., at a hydrogen to organic compound mole ratio of between 0 and 1 to deposit at least about 1 weight percent coke thereon, such precoked catalyst having been deactivated by formation of a carbonaceous deposit thereon as a result of use of the same in catalytically converting an organic charge under conditions less severe, i.e., at a lower temperature and/or a higher hydrogen concentration than those employed during said precoking which comprises contacting the aged catalyst with an atmosphere comprising hydrogen at a temperature between about 800.degree. F. and about 1200.degree. F. and a pressure between about 0 and about 2000 psig for a period of time sufficient to at least partially restore the activity of the catalyst.

    摘要翻译: 提供了一种用于再生包含结晶硅铝酸盐沸石的催化剂的方法,其特征在于二氧化硅与氧化铝的摩尔比为至少约12,下文定义的约束指数在约12至约12的范围内,该催化剂已被控制 通过在超过所述化合物的分解温度但小于约1200°F的温度下将其暴露于可热分解的有机化合物中,在氢与有机化合物的摩尔比为0至1之间进行沉淀,以沉积至少约 其中焦炭重量为1%,这种预制催化剂已经通过在其上形成碳质沉积物而失活,其结果是在不太严格的条件下即在较低温度和/或较高的氢气条件下催化转化有机电荷 浓度高于在所述预处理中使用的浓度,其包括使老化的催化剂与包含氢气的气氛接触 约800°F至约1200°F之间的温度和约0至约2000psig的压力持续足以至少部分恢复催化剂活性的时间。

    Heat balanced cyclic process for manufacture of light olefins
    25.
    发明授权
    Heat balanced cyclic process for manufacture of light olefins 失效
    用于制造轻质烯烃的热平衡循环过程

    公开(公告)号:US4229608A

    公开(公告)日:1980-10-21

    申请号:US970718

    申请日:1978-12-18

    IPC分类号: B01J8/38 C07C1/20 C07C1/00

    摘要: A catalytic heat balanced cyclic process is provided for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene by contact, under specified conditions of temperature and contact time, with a catalyst comprising a crystalline aluminosilicate zeolite characterized by pores, the major dimension of which is less than 6 Angstroms and the capability, under such conditions, of producing less than about 20 weight percent methane in said hydrocarbon product, regenerating the catalyst so employed at a temperature between about 1200.degree. and about 1400.degree. F. to remove accumulated carbonaceous deposit therefrom and provide a source of hot regenerated catalyst for further contact, under controlled temperature conditions, with said charge.

    摘要翻译: 提供催化热平衡循环方法,用于在基本上由甲醇,二甲醚或其混合物组成的电荷下,在特定的温度和接触时间条件下,与包含结晶硅铝酸盐的催化剂接触,将富含乙烯和丙烯的烃产物 沸石的特征在于其主要尺寸小于6埃的孔,以及在这种条件下在所述烃产物中产生小于约20重量%的甲烷的能力,在约1200℃和 约1400°F以从其中除去积聚的碳质沉积物,并提供热再生催化剂源,在受控的温度条件下与所述电荷进一步接触。

    Selective disproportionation of toluene
    26.
    发明授权
    Selective disproportionation of toluene 失效
    甲苯的选择性歧化

    公开(公告)号:US4097543A

    公开(公告)日:1978-06-27

    申请号:US760893

    申请日:1977-01-21

    摘要: A catalytic process is provided for the selective production of para-xylene by disproportionation of toluene in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12, which catalyst has undergone controlled precoking, i.e. selectivation, by exposing the same to a thermally decomposable organic compound at a temperature in excess of the decomposition temperature of said compound, generally greater than 1000.degree. F., but less than about 1200.degree. F., at a hydrogen to organic compound mole ratio between 0 and 1 to deposit at least about 2 weight percent coke thereon and thereafter contacting toluene with the resulting coke-containing catalyst under disproportionation conditions including a temperature between about 800.degree. F. and 1025.degree. F., and preferably between about 825.degree. F. and 1000.degree. F., at a hydrogen to toluene mole ratio greater than 1 and up to about 10 and recovering a product mixture containing para-xylene in an amount greater than the thermodynamic equilibrium concentration thereof in the total xylenes produced.

    摘要翻译: 提供了一种催化方法,用于通过在包含二氧化硅与氧化铝比为至少约12的结晶硅铝酸盐沸石的催化剂存在下甲苯的歧化来选择性生产对二甲苯,约束指数在约1至 如图12所示,该催化剂经过可控制的预炼,即选择性,通过在超过所述化合物的分解温度的温度下将其暴露于可热分解的有机化合物,通常大于1000°F,但小于约1200°F 在氢与有机化合物的摩尔比为0和1之间沉积至少约2重量%的焦炭,然后在包括温度在约800°至1025°之间的歧化条件下将甲苯与所得的含焦炭催化剂接触。 F,优选在约825°F至1000°F之间,氢气与甲苯的摩尔比大于1, p至约10,并回收含有大于其产生的总二甲苯中的热力学平衡浓度的含对二甲苯的产物混合物。

    Alkylation in presence of thermally modified crystalline aluminosilicate
catalyst
    28.
    发明授权
    Alkylation in presence of thermally modified crystalline aluminosilicate catalyst 失效
    在热改性结晶硅铝酸盐催化剂存在下烷基化

    公开(公告)号:US4016218A

    公开(公告)日:1977-04-05

    申请号:US582025

    申请日:1975-05-29

    摘要: Process for the alkylation of aromatic hydrocarbons by contacting same with an olefin alkylating agent in a reaction zone maintained under conditions such that said alkylation is accomplished in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, said zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12, said catalyst having been modified by prior thermal treatment to reduce the activity thereof, as determined by an alpha value, as described herein, to less than about 250 and preferably within the range of less than about 200 but greater than 10.

    摘要翻译: 芳族烃的烷基化方法是通过在反应区中与烯烃烷基化试剂接触而进行的,所述反应区保持在使得所述烷基化在包含结晶硅铝酸盐沸石的催化剂存在下完成的条件下,所述沸石的二氧化硅与氧化铝的比例为 至少约12和约1到12的约束指数,所述催化剂已经通过先前的热处理进行了修饰,以将其活性降低,如本文所述的α值确定为小于 约250,优选在小于约200但大于10的范围内。

    Highly selective n-olefin isomerization process using ZSM-35
    29.
    发明授权
    Highly selective n-olefin isomerization process using ZSM-35 失效
    使用ZSM-35的高选择性正烯烃异构化方法

    公开(公告)号:US5516959A

    公开(公告)日:1996-05-14

    申请号:US357841

    申请日:1994-12-09

    摘要: A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins at high levels of feed conversion wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-35 under skeletal isomerization conditions which can include temperatures of 100 to 750.degree. C. The process uses a catalyst composition comprising ZSM-35, e.g., microcrystalline ZSM-35 having a crystal size whose largest dimension is no greater than 0.5 micron and whose ratio of its second largest dimension to said largest dimension ranges from 0.5 to 1. The process exhibits enhanced catalyst cycle life where the ZSM-35 is composited with a silica-containing matrix to provide a catalyst composite having a total pore volume greater than 0.6 cc/g or 300.sup.+ angstroms pore volume of greater than 0.1 cc/g.

    摘要翻译: 公开了一种用于在高水平进料转化率下将含线性烯烃的有机原料高度选择性骨架异构化为异烯烃的方法,其中线性烯烃例如正丁烯在骨架异构化条件下与包含ZSM-35的催化剂接触, 可以包括100至750℃的温度。该方法使用包含ZSM-35的催化剂组合物,例如具有最大尺寸不大于0.5微米的晶体尺寸的微晶ZSM-35,其第二大尺寸与所述 最大尺寸范围为0.5至1.该方法表现出增强的催化剂循环寿命,其中ZSM-35与含二氧化硅的基质复合以提供总孔体积大于0.6cc / g或300多埃孔体积的催化剂复合材料 大于0.1cc / g。

    Double bond isomerization of olefin-containing feeds with minimal
oligomerization using permanently surface acidity deactivated zeolite
catalysts
    30.
    发明授权
    Double bond isomerization of olefin-containing feeds with minimal oligomerization using permanently surface acidity deactivated zeolite catalysts 失效
    使用永久表面酸性失活的沸石催化剂,使含烯烃进料的双键异构化以最小的低聚反应

    公开(公告)号:US5304695A

    公开(公告)日:1994-04-19

    申请号:US20947

    申请日:1993-02-22

    IPC分类号: C07C5/25

    CPC分类号: C07C5/2518

    摘要: A method is disclosed for the double bond isomerization of alpha olefin-containing feeds, e.g., conversion of 1-butene-containing hydrocarbon streams to 2-butene-rich product streams, wherein oligomer by-products are minimized. The process uses a catalyst composition comprising a zeolite whose surface has been at least partially deactivated for acid catalyzed reactions by treatment with an aluminum chelating agent, e.g., oxalic acid, which possesses an average cross section diameter greater than that of the zeolite pores.

    摘要翻译: 公开了用于含α烯烃的进料的双键异构化的方法,例如将含1-丁烯的烃流转化为富含2-丁烯的产物流,其中低聚物副产物最小化。 该方法使用包含沸石的催化剂组合物,其表面已经通过用铝螯合剂(例如草酸)处理而至少部分失活以进行酸催化反应,所述铝螯合剂例如草酸的平均截面直径大于沸石孔的平均截面直径。