Method of converting C9 aromatics-comprising mixtures to xylene isomers
    1.
    发明申请
    Method of converting C9 aromatics-comprising mixtures to xylene isomers 审中-公开
    将C9芳族化合物混合物转化为二甲苯异构体的方法

    公开(公告)号:US20050197518A1

    公开(公告)日:2005-09-08

    申请号:US10794932

    申请日:2004-03-04

    IPC分类号: C07C6/12 C07C15/12

    CPC分类号: C07C6/126 Y02P20/52 C07C15/08

    摘要: Disclosed herein is a method of making xylene isomers. More specifically, the method includes contacting a C9 aromatics-comprising feed with a catalyst under conditions suitable for converting the feed to an intermediate product stream comprising xylene isomers, separating at least a portion of the xylene isomers from the intermediate product stream, and recycling to the feed the xylene isomers-lean intermediate product stream. Alternatively, the method of making xylene isomers includes contacting a feed comprising C9 aromatics and less than about 30 wt. % benzene, based on the total weight of the feed, with a non-sulfided, large-pore zeolite impregnated with a Group VIB metal oxide, under conditions suitable for converting the feed to a product stream comprising xylene isomers. The disclosed method is characterized by unexpectedly high ratios of xylene isomers to ethylbenzene, xylene isomers to C9 aromatics (e.g., methylethylbenzene), xylene isomers to C10 aromatics, trimethylbenzene to methylethylbenzene, benzene to ethylbenzene, in the product of the conversion, and the high conversion of C9 aromatics and methylethylbenzene.

    摘要翻译: 本文公开了制备二甲苯异构体的方法。 更具体地说,该方法包括在适于将进料转化为包含二甲苯异构体的中间产物流的条件下使含C 9芳烃的进料与催化剂接触,将至少一部分二甲苯异构体从 中间产物流,并将二氧化碳异构体贫中间产物流再循环给进料。 或者,制备二甲苯异构体的方法包括使包含C 9芳族化合物的进料和小于约30wt。 在适合于将进料转化为包含二甲苯异构体的产物流的条件下,基于进料总重量的苯与具有VIB族金属氧化物浸渍的非硫化大孔沸石。 所公开的方法的特征在于将二甲苯异构体与乙苯,二甲苯异构体到C 9芳族化合物(例如甲基乙基苯),二甲苯异构体到C 10芳烃,三甲基苯到 甲基乙基苯,苯到乙苯,转化产物和C 9 C 7芳烃和甲基乙基苯的高转化率。

    Methods of making xylene isomers
    2.
    发明申请
    Methods of making xylene isomers 审中-公开
    制备二甲苯异构体的方法

    公开(公告)号:US20070049780A1

    公开(公告)日:2007-03-01

    申请号:US11215272

    申请日:2005-08-30

    IPC分类号: C07C4/12

    摘要: Disclosed herein are methods of making xylene isomers. The methods generally include contacting an aromatics-comprising feed with a non-sulfided catalyst under conditions suitable for converting the feed to a product comprising xylene isomers. The catalyst includes a support impregnated with a hydrogenation component. The support includes a macroporous binder and a sieve selected from the group consisting of a medium pore sieve, a large pore sieve, and mixtures thereof. The selection of the sieve will depend upon the size of the molecules in the feed, intermediate, and product that can be expected from the catalytic reactions. When the molecules are expected to be large, a large pore sieve should be used. In contrast, when the molecules are expected to be smaller, either a large pore sieve, a medium pore sieve, or a mixture thereof may be used. The macropores within the support have been found to be especially beneficial because they help to overcome diffusional limitations observed when utilizing highly-active catalysts lacking such macropores.

    摘要翻译: 本文公开了制备二甲苯异构体的方法。 所述方法通常包括在适于将进料转化为包含二甲苯异构体的产物的条件下使包含芳烃的进料与非硫化催化剂接触。 催化剂包括浸渍有氢化组分的载体。 载体包括大孔粘合剂和选自中孔筛,大孔筛及其混合物的筛子。 筛子的选择将取决于催化反应可以预期的进料,中间体和产物中分子的大小。 当分子预期较大时,应使用大孔隙筛。 相反,当分子预期更小时,可以使用大孔隙筛孔,中孔筛或其混合物。 发现载体中的大孔是特别有益的,因为它们有助于克服当使用缺乏这种大孔的高活性催化剂时观察到的扩散限制。

    Xylene process using perm-selective separations
    4.
    发明申请
    Xylene process using perm-selective separations 失效
    二甲苯工艺使用烫发选择性分离

    公开(公告)号:US20050171395A1

    公开(公告)日:2005-08-04

    申请号:US10769539

    申请日:2004-01-30

    IPC分类号: C07C7/12 C07C7/144 C07C15/08

    CPC分类号: C07C7/144 C07C15/08

    摘要: Processes are disclosed for production of purified products from a fluid mixtures of C8 aromatics by means of integration of perm-selective separations with purified product recovery operations. The perm-selective separations of the invention comprise of one or more devices using polymeric perm-selective membrane devices to separate a meta-xylene enriched stream from fluid mixtures of C8 aromatics thereby producing a fluid comprising the remaining aromatic compounds which advantageously includes para-xylene. Processes of the invention are particularly useful for recovery of very pure meta-xylene and para-xylene co-products from liquid mixtures even containing ethylbenzene as well as the three xylene isomers.

    摘要翻译: 公开了通过将选择性分选与纯化的产物回收操作相结合从C 8芳烃的流体混合物生产纯化产物的方法。 本发明的烫发选择性分离包括使用聚合物选择性选择性膜装置的一种或多种装置,用于将富二甲苯富集流与C 8芳烃的流体混合物分离,从而产生包含剩余的 有利地包括对二甲苯的芳族化合物。 本发明的方法特别可用于从甚至含有乙苯的液体混合物以及三种二甲苯异构体中回收非常纯的间二甲苯和对二甲苯共产物。

    Ionic polymer membranes
    5.
    发明申请
    Ionic polymer membranes 审中-公开
    离子聚合物膜

    公开(公告)号:US20060049102A1

    公开(公告)日:2006-03-09

    申请号:US10933593

    申请日:2004-09-03

    IPC分类号: B01D71/06

    CPC分类号: B01D53/228 B01D71/82

    摘要: Compositions and processes are disclosed for economical separation of fluid mixtures. Broadly, the present invention discloses ionic polymer compositions that are useful for perm-selective membrane separations. More particularly, ionic polymers of the invention comprise a plurality of repeating structural units having as a constituent part thereof organic ionic moieties consisting of nitrogen containing anions and/or cations. In the form of non-porous membranes, ionic polymers of the invention facilitate recovery of purified organic and inorganic products from fluid mixtures by means of perm-selective membrane separations. The present invention also provides methods for forming the ionic polymers, for example by treating selected nitrogen-containing organic polymers with acids, or treating a polymeric material comprising a plurality of carboxylate groups with an amine. Ionic polymer compositions of the invention are particularly useful for simultaneous recovery of a permeate product of an increased concentration, and a desired non-permeate stream, from a fluid mixture containing at least two compounds of different boiling point temperatures.

    摘要翻译: 公开了用于经济分离流体混合物的组合物和方法。 广泛地,本发明公开了可用于烫发选择性膜分离的离子聚合物组合物。 更具体地,本发明的离子聚合物包含多个重复结构单元,其具有由含有阴离子和/或阳离子的氮组成的有机离子部分的组成部分。 以无孔膜的形式,本发明的离子聚合物便于通过选择性膜分离从流体混合物中回收纯化的有机和无机产物。 本发明还提供了形成离子聚合物的方法,例如通过用酸处理选定的含氮有机聚合物,或用胺处理包含多个羧酸酯基团的聚合物材料。 本发明的离子聚合物组合物特别可用于从含有至少两种不同沸点温度的化合物的流体混合物中同时回收浓度增加的渗透产物和期望的非渗透物流。

    Self deploying implant in needle
    8.
    发明授权
    Self deploying implant in needle 有权
    自行部署植入物针

    公开(公告)号:US08652216B2

    公开(公告)日:2014-02-18

    申请号:US12938474

    申请日:2010-11-03

    IPC分类号: A61F2/02

    摘要: Described, in certain inventive embodiments, are unique devices and methods for introducing implants into soft tissue of a patient. One of these devices includes a tissue-penetrating member that is configured to pass in its entirety through a volume of patient tissue. The tissue-penetrating member has a leading end and a trailing end, and provides a receiving space for receipt of an implant body portion for carrying the implant body portion into the volume of patient tissue. The device also includes an implant that has an implant body portion removably received in the receiving space of the tissue-penetrating member. The implant body portion is configured for deployment from the receiving space in the volume of patient tissue so as to remain deployed there along a passageway traversed by the tissue-penetrating member.

    摘要翻译: 在某些发明实施例中描述了用于将植入物引入患者的软组织中的独特装置和方法。 这些装置中的一个包括组织穿透构件,所述组织穿透构件被构造成整体穿过患者组织的体积。 组织穿透构件具有前端和后端,并且提供用于接收用于将植入物主体部分携带到患者组织体积中的植入物主体部分的接收空间。 该装置还包括植入物,其具有可拆卸地容纳在组织穿透构件的容纳空间中的植入物主体部分。 植入物主体部分构造成从患者组织体积中的接收空间展开,以便沿着由组织穿透构件穿过的通道保持展开。

    Continuously variable graded artificial dielectrics using nanostructures
    10.
    发明授权
    Continuously variable graded artificial dielectrics using nanostructures 失效
    使用纳米结构的连续可变分级人造电介质

    公开(公告)号:US08089152B2

    公开(公告)日:2012-01-03

    申请号:US11589988

    申请日:2006-10-31

    申请人: Jeffrey Miller

    发明人: Jeffrey Miller

    IPC分类号: H01L23/46

    摘要: Graded artificial dielectrics using nanostructures, such as nanowires, are disclosed. The graded artificial dielectric includes a material (typically a dielectric) with a plurality of nanostructures, such as nanowires, embedded within the dielectric material. One or more characteristics of the nanostructures are spatially varied from a first region within the dielectric to a second region within the dielectric to produce permittivity of the graded artificial dielectric that is spatially varied. The characteristics that can be varied include, but are not limited to, nanostructure density, nanostructure length, nanostructure aspect ratio, nanostructure oxide ratio, and nanostructure alignment. Methods of producing graded artificial dielectrics are also provided. A wide range of electronic devices such as antennas can use graded artificial dielectrics with nanostructures to improve performance.

    摘要翻译: 公开了使用纳米结构的分级人造电介质,例如纳米线。 分级人造电介质包括具有嵌入电介质材料内的多个纳米结构(如纳米线)的材料(通常为电介质)。 纳米结构的一个或多个特征在电介质内的第一区域在空间上变化到电介质内的第二区域,以产生在空间上变化的渐变人造电介质的介电常数。 可以变化的特征包括但不限于纳米结构密度,纳米结构长度,纳米结构长宽比,纳米结构氧化物比和纳米结构对准。 还提供了生产分级人造电介质的方法。 诸如天线的各种电子设备可以使用具有纳米结构的分级人造电介质来提高性能。