METHOD FOR OBTAINING A POROUS STRUCTURE BASED ON SILICON CARBIDE
    2.
    发明申请
    METHOD FOR OBTAINING A POROUS STRUCTURE BASED ON SILICON CARBIDE 审中-公开
    用于获得基于碳化硅的多孔结构的方法

    公开(公告)号:US20100083645A1

    公开(公告)日:2010-04-08

    申请号:US12517361

    申请日:2007-12-13

    摘要: The invention relates to a process for obtaining a structure made from a porous ceramic material comprising at least 95% of silicon carbide SiC, said process being characterized in that said structure is obtained from a mixture of SiC grains comprising at least: a first fraction of α-SiC grains whose median diameter is less than 5 microns; a second fraction of α-SiC grains whose median diameter is at least two times greater than that of the first fraction of α-SiC grains and whose median diameter is greater than or equal to 5 microns; and a fraction of β-SiC grains or of at least a precursor of β-SiC grains. The invention also relates to the porous structure obtained according to the process.

    摘要翻译: 本发明涉及一种获得由多孔陶瓷材料制成的结构的方法,该多孔陶瓷材料包含至少95%的碳化硅SiC,所述方法的特征在于,所述结构由SiC晶粒的混合物获得,该SiC晶粒至少包含: 中间粒径小于5微米的α-SiC晶粒; α-SiC颗粒的第二部分,其中值直径比α-SiC颗粒的第一级分的至少两倍,并且其中值直径大于或等于5微米; 和一部分-SiC晶粒或至少一种-SiC晶粒的前体。 本发明还涉及根据该方法获得的多孔结构。

    Acylation of an organic group over a zeolite
    3.
    发明授权
    Acylation of an organic group over a zeolite 失效
    沸石上的有机基团的酰化

    公开(公告)号:US06403835B1

    公开(公告)日:2002-06-11

    申请号:US09705060

    申请日:2000-11-02

    IPC分类号: C07C4529

    摘要: The invention relates to the shape selective acylation of an organic compound. In particular, the invention describes a process for such acylation wherein the process comprises reducing the number of surface acid sites without dealuminations on at least a portion of the surface of a zeolite and acylating the organic compound in the presence of the zeolite. The organic compounds used in the invention include, for example, olefins, aromatic hydrocarbons, aromatic heterocyclic compounds, and phenolic compounds wherein the organic group may be substituted or unsubstituted. The zeolite may be any natural or synthetic zeolite with a unidimensional or multidimensional network, for example a two-dimensional, or three-dimensional network, or any molecular sieve with structural features similar to these.

    摘要翻译: 本发明涉及有机化合物的形状选择性酰化。 特别地,本发明描述了一种这样的酰化方法,其中该方法包括在沸石的至少一部分表面上减少表面酸性位点的数目而不发生脱铝,并在沸石存在下酰化有机化合物。 用于本发明的有机化合物包括例如烯烃,芳族烃,芳族杂环化合物和酚类化合物,其中有机基团可被取代或未被取代。 沸石可以是具有一维或多维网络的任何天然或合成沸石,例如二维或三维网络,或具有与之相似的结构特征的任何分子筛。

    Process for skeletal isomerization of linear olefins using a pretreated
molecular sieve, and a catalyst containing a pretreated sieve
    4.
    发明授权
    Process for skeletal isomerization of linear olefins using a pretreated molecular sieve, and a catalyst containing a pretreated sieve 失效
    使用预处理分子筛的线性烯烃的骨架异构化方法和含有预处理筛的催化剂的方法

    公开(公告)号:US5817907A

    公开(公告)日:1998-10-06

    申请号:US642191

    申请日:1996-05-06

    摘要: The invention concerns a process for skeletal isomerization of linear olefins using a catalyst containing at least one pre-treated molecular sieve selected from the group formed by SAPO-31, SAPO-11, Theta-1, EU-1, omega zeolite, mordenite, Nu-10, Nu-86, Nu-87, ferrierite, ZSM-12 and ZSM-23. The pre-treatment process consists in bringing the molecular sieve, which has a pore size of 0.4 to 0.8 nm, into contact with at least one hydrocarbon molecule containing 4 to 20 carbon atoms, at a space velocity of 0.1-45 h.sup.-1, a temperature of 300.degree.-550.degree. C. and at a pressure of 0.1-1 MPa, for 0.5-48 h, to deposit coke in the pores. The process is of particular application to one-dimensional sieves. It is preferably carried out outside the reaction zone. The invention also concerns a catalyst containing a pre-treated sieve, the sieve being selected from SAPO-31, SAPO-11, Theta-1, EU-1, omega zeolite, mordenite, ferrierite, Nu-10, Nu-86 and Nu-87.

    摘要翻译: 本发明涉及一种使用含有至少一种选自SAPO-31,SAPO-11,Theta-1,EU-1,ω-沸石,丝光沸石形成的组的预处理分子筛的催化剂的线性烯烃骨架异构化方法。 Nu-10,Nu-86,Nu-87,镁碱沸石,ZSM-12和ZSM-23。 预处理过程包括使孔径为0.4至0.8nm的分子筛与至少一种含有4-20个碳原子的烃分子以0.1-45h -1的空间速度接触, 温度为300〜-550℃,压力为0.1〜1MPa,时间为0.5〜48h,将焦炭沉积在孔中。 该过程特别适用于一维筛。 优选在反应区外进行。 本发明还涉及含有预处理筛的催化剂,该筛选自SAPO-31,SAPO-11,Theta-1,EU-1,ω-沸石,丝光沸石,镁碱沸石,Nu-10,Nu-86和Nu -87。

    TEXTURIZED PURIFICATION STRUCTURE INCORPORATING AN ELECTROCHEMICAL CATALYST SYSTEM
    6.
    发明申请
    TEXTURIZED PURIFICATION STRUCTURE INCORPORATING AN ELECTROCHEMICAL CATALYST SYSTEM 审中-公开
    电化学催化剂体系的纹理纯化结构

    公开(公告)号:US20100229542A1

    公开(公告)日:2010-09-16

    申请号:US12681865

    申请日:2008-10-02

    IPC分类号: F01N3/28 F01N3/10

    摘要: A structure for the purification of a polluted gas comprising a porous matrix of an inorganic material, in the form of interconnected grains and an electrochemical system for the treatment of said gas, formed by a reduction catalyst A for reducing the polluting species of the NOx type, an oxidation catalyst B for oxidizing the polluting species of the hydrocarbon HC type or CO type, an electron-conductive compound C and an ion-conductive compound D, said structure being characterized in that catalysts A and B are placed in the pores of the inorganic material, in that the grains and possibly the grain boundaries of the inorganic material constituting the matrix are covered over at least part of their surface with a texturizing material, and in that said texturizing material is an ionic, electronic or ionic/electronic conductor and constitutes, respectively, the element C, the element D or the elements C and D of the electrochemical gas treatment system.

    摘要翻译: 一种用于净化污染气体的结构,包括由互连晶粒形式的无机材料的多孔基体和用于处理所述气体的电化学系统,所述还原催化剂A用于减少NOx类型的污染物种 ,用于氧化烃类型或CO型污染物种的氧化催化剂B,电子传导性化合物C和离子传导性化合物D,其特征在于催化剂A和B置于 无机材料,因为构成基体的无机材料的晶粒和可能的晶界在其表面的至少一部分上被覆盖在组织化材料上,并且所述组织化材料是离子,电子或离子/电子导体, 分别构成电化学气体处理系统的元素C,元素D或元素C和D。

    PURIFICATION STRUCTURE INCORPORATING AN ELECTROCHEMICAL CATALYSIS SYSTEM
    8.
    发明申请
    PURIFICATION STRUCTURE INCORPORATING AN ELECTROCHEMICAL CATALYSIS SYSTEM 审中-公开
    包含电化学催化体系的净化结构

    公开(公告)号:US20090163354A1

    公开(公告)日:2009-06-25

    申请号:US12295900

    申请日:2007-04-06

    IPC分类号: B01J29/068

    摘要: The invention relates to a structure for the purification of a contaminated gas, for example the exhaust gas from a diesel or petrol engine, the structure incorporating an electrochemical system for treating said gas, composed of an NOx reduction catalyst A, a hydrocarbon oxidation catalyst B, an electron-conducting compound C and an ion-conducting compound D, said structure being characterized in that it is made of or covered with at least one porous, inorganic, electron-conducting and/or ion-conducting material in such a way that the catalysts A and B are disposed in the porosity of the inorganic material and that the ion-conducting, electron-conducting or ion-conducting and electron-conducting inorganic material makes up, respectively, the element C, the element D, or the sum of the elements C and D of said electrochemical system.

    摘要翻译: 本发明涉及一种用于净化污染气体的结构,例如来自柴油或汽油发动机的废气,其结构包括用于处理所述气体的电化学系统,其由NOx还原催化剂A,烃氧化催化剂B ,导电化合物C和离子导电化合物D,所述结构的特征在于其由至少一种多孔,无机,电子传导和/或离子传导材料制成或覆盖,使得 催化剂A和B设置在无机材料的孔隙中,并且离子导电,导电或离子导电和电子传导无机材料分别构成元素C,元素D或总和 的所述电化学系统的元素C和D。