Preparation of caprolactam
    11.
    发明授权
    Preparation of caprolactam 失效
    己内酰胺的制备

    公开(公告)号:US5652362A

    公开(公告)日:1997-07-29

    申请号:US643819

    申请日:1996-05-06

    CPC classification number: C07D201/08

    Abstract: A method of making caprolactam from aminohexanoic acid or aminohexanoate ester comprising the steps of: (a) obtaining a reactor containing at least one catalyst, the catalyst being a metal oxide having acid-base-paired active sites; (b) charging a reaction feed into the reactor, the reaction feed containing a reactant, which is either amniohexanoic acid or C.sub.1 to C.sub.12 alkyl aminohexanoate ester, and a solvent; (c) reacting the reaction feed at a reaction temperature between 140.degree. and 300.degree. C. and a reaction pressure between 10 and 100 atm, to form a product stream; and (d) separating caprolactam from the product stream. The metal oxide catalyst is prepared from a process comprising the steps of: (a) dissolving at least a metal salt, which is not a metal oxide, in a solvent to form a metal salt solution, wherein: (i) the metal salt contains a metal element selected from the group consisting of silicon, titanium, tin, barium, calcium, magnesium, aluminum, and zinc; (ii) the solvent is selected from the group consisting of water, alcohol, ether, and mixtures thereof, and (iii) the metal salt is a salt which is soluble in the solvent; (b) adjusting the pH of the metal salt solution to be between 8 and 11, to thereby cause a precipitation of metal hydroxide; and (c) calcining the metal hydroxide at 300.degree. to 1,000.degree. C. to form a metal oxide.

    Abstract translation: 一种由氨基己酸或氨基己酸酯制备己内酰胺的方法,包括以下步骤:(a)获得含有至少一种催化剂的反应器,该催化剂是具有酸碱配位活性位点的金属氧化物; (b)将反应进料装入反应器中,反应进料含有反应物,其为氨基己酸或C 1至C 12烷基氨基己酸酯,和溶剂; (c)使反应进料在140℃至300℃的反应温度和10至100atm的反应压力下反应,形成产物流; 和(d)从产物流中分离己内酰胺。 金属氧化物催化剂由包括以下步骤的方法制备:(a)将至少一种不是金属氧化物的金属盐溶解在溶剂中以形成金属盐溶液,其中:(i)金属盐包含 选自硅,钛,锡,钡,钙,镁,铝和锌的金属元素; (ii)溶剂选自水,醇,醚及其混合物,和(iii)金属盐是可溶于溶剂的盐; (b)将金属盐溶液的pH调节至8〜11,使金属氢氧化物析出; 和(c)在300-1,000℃下煅烧金属氢氧化物以形成金属氧化物。

    Stackable modular personal computer structure
    12.
    发明授权
    Stackable modular personal computer structure 有权
    可堆叠模块化个人电脑结构

    公开(公告)号:US07815264B2

    公开(公告)日:2010-10-19

    申请号:US11705041

    申请日:2007-02-12

    CPC classification number: G06F1/181 G06F2200/1635

    Abstract: A stackable modular personal computer structure comprises a lowermost frameworks, a plurality of intermediate frameworks, an uppermost framework and an upper cover; the frameworks and the upper cover stacked with each other in a sequence; all the frameworks have the first internal engaging structure inside the tops thereof respectively, the intermediate frameworks, the uppermost framework and the upper cover each have the second internal engaging structure inside the bottoms thereof respectively; the bottoms of each of the intermediate and the uppermost frameworks has a hole especially for electric wires to pass through to enable the modular personal computer so that a consistent outlook for the computer structure can be obtained.

    Abstract translation: 可堆叠的模块化个人计算机结构包括最下面的框架,多个中间框架,最上面的框架和上盖; 框架和上盖按顺序彼此堆叠; 所有的框架分别在其顶部内部具有第一内部接合结构,中间框架,最上框架和上盖分别在其底部内部具有第二内部接合结构; 中间和最上面的框架中的每一个的底部具有特别用于电线通过的孔,以使模块化个人计算机能够获得对于计算机结构的一致前景。

    Stackable modular personal computer structure
    13.
    发明申请
    Stackable modular personal computer structure 有权
    可堆叠模块化个人电脑结构

    公开(公告)号:US20080002346A1

    公开(公告)日:2008-01-03

    申请号:US11705041

    申请日:2007-02-12

    CPC classification number: G06F1/181 G06F2200/1635

    Abstract: A stackable modular personal computer structure, comprising a plurality of framework; the plural frameworks stacked to combine with each other in a sequence; a bottom of each other framework above the first framework which is mounted on a lowest layer has a hole for allowing at least one electric wire to be passed through to enable the electric wires of the modular personal computer and a combination structure of each layer are all hid inside the frameworks so that an identical outlook can be obtained.

    Abstract translation: 一种可堆叠的模块化个人计算机结构,包括多个框架; 堆叠的多个框架以一个顺序相互组合; 安装在最低层上的第一框架上方的每个框架的底部具有用于允许至少一根电线通过的孔,以使得模块化个人计算机的电线和每层的组合结构都是 隐藏在框架内,以便获得相同的前景。

    Process for the selective methanation of carbonmonoxide (CO) contained in a hydrogen-rich reformate gas
    14.
    发明申请
    Process for the selective methanation of carbonmonoxide (CO) contained in a hydrogen-rich reformate gas 有权
    用于富氢重整气体中所含的一氧化碳(CO)的选择性甲烷化的方法

    公开(公告)号:US20060111456A1

    公开(公告)日:2006-05-25

    申请号:US11110732

    申请日:2005-04-21

    Abstract: The present invention provides a methanation catalyst prepared by depositing Pt and Ru on a metal oxide carrier by incipient wetness impregnation or precipitation deposition, drying and calcining the deposited carrier to obtain a Pt—Ru/metal oxide catalyst. This catalyst can selectively catalyze methanation of CO, wherein hydrogen and CO in a hydrogen-rich reformate or synthesis gas are reacted to form methane and water, thereby the CO concentration in the hydrogen-rich reformate is reduced.

    Abstract translation: 本发明提供一种通过初始润湿浸渍或沉淀沉积,干燥和煅烧沉积的载体以获得Pt-Ru /金属氧化物催化剂,通过在金属氧化物载体上沉积Pt和Ru而制备的甲烷化催化剂。 该催化剂可以选择性地催化CO的甲烷化,其中富氢重整产物中的氢和CO反应生成甲烷和水,从而降低富氢重整产物中的CO浓度。

    Catalytic processes for the preparation of acetic esters
    15.
    发明授权
    Catalytic processes for the preparation of acetic esters 失效
    用于制备乙酸酯的催化方法

    公开(公告)号:US5998658A

    公开(公告)日:1999-12-07

    申请号:US105795

    申请日:1998-06-26

    CPC classification number: C07C67/08 Y02P20/127 Y02P20/582

    Abstract: An improved process for the preparation of acetic esters is disclosed. It comprises a fixed bed reaction and a catalytic distillation. The fixed bed reaction comprises the steps of: (a) charging acetic acid and alcohol into a fixed bed reactor under a predetermined reaction condition; and (b) reacting the esterification reactants in the fixed bed reactor. The fixed bed reactor contains acidic catalysts that are present in a solid phase, and the reaction condition is controlled such that (i) the reactants and the products co-exist in a gas-liquid two-phase equilibrium in the fixed bed reactor and that (ii) at least one component of the reactants is present in one phase and at least one component of the products is present in another phase. The catalytic distillation comprises the steps of: (1) charging acetic acid from top of a catalytic distillation column and the reaction products from the fixed bed reactor from the bottom of the catalytic column in a counter-flow manner; and (c) continuously removing acetic ester and water from the top of the catalytic distillation column, and continuously removing acetic acid from the bottom of the catalytic distillation column. The acetic acid removed from the catalytic distillation column is fed into the fixed bed reactor. Very high alcohol conversion and essentially alcohol free product can be obtained at substantially reduced height of the catalytic distillation column.

    Abstract translation: 公开了一种制备乙酸酯的改进方法。 它包括固定床反应和催化蒸馏。 固定床反应包括以下步骤:(a)在预定的反应条件下将乙酸和醇加入到固定床反应器中; 和(b)在固定床反应器中使酯化反应物反应。 固定床反应器含有存在于固相中的酸性催化剂,并且控制反应条件使得(i)反应物和产物在固定床反应器中以气液两相平衡共存,而且 (ii)反应物的至少一种组分存在于一相中,并且产物的至少一种组分存在于另一相中。 催化蒸馏包括以下步骤:(1)从催化蒸馏塔顶部以反流方式从催化塔底部向固定床反应器中加入乙酸; 和(c)从催化蒸馏塔的顶部连续地除去乙酸酯和水,并从催化蒸馏塔的底部连续地除去乙酸。 从催化蒸馏塔中除去的乙酸被送入固定床反应器。 可以在催化蒸馏塔的基本上降低的高度获得极高的醇转化率和基本上无醇的产物。

    Ring-opening polymerization of cyclic ethers
    17.
    发明授权
    Ring-opening polymerization of cyclic ethers 失效
    环醚的开环聚合

    公开(公告)号:US5371276A

    公开(公告)日:1994-12-06

    申请号:US157960

    申请日:1993-11-24

    CPC classification number: C07C67/24

    Abstract: A method for preparing ester end-capped polyalkylene ether is disclosed. Cyclic ether monomers are subjected to ring-opening polymerzation at a temperature of 20.degree.-80.degree. C. and a pressure of 0-10 atm in the presence of a solid acid serving as catalyst and a mixture of acid and acid anhydride serving as a promoter. The solid acid is an oxide of group III and group IV elements and has been modified by sulfuric acid, ammonium sulfate or ammonium sulfite.

    Abstract translation: 公开了一种制备酯封端的聚亚烷基醚的方法。 在作为催化剂的固体酸存在下,将环醚单体在20〜80℃的温度和0〜10atm的压力下进行开环聚合,将酸和酸酐的混合物用作 启动子。 固体酸是III族和IV族元素的氧化物,并被硫酸,硫酸铵或亚硫酸铵改性。

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