NICKEL HEXAALUMINATE-CONTAINING CATALYST FOR REFORMING HYDROCARBONS IN THE PRESENCE OF CARBON DIOXIDE
    6.
    发明申请
    NICKEL HEXAALUMINATE-CONTAINING CATALYST FOR REFORMING HYDROCARBONS IN THE PRESENCE OF CARBON DIOXIDE 有权
    在二氧化碳存在下用于改造碳氢化合物的含镍六卤化镓的催化剂

    公开(公告)号:US20160008791A1

    公开(公告)日:2016-01-14

    申请号:US14771888

    申请日:2014-03-06

    申请人: BASF SE

    摘要: The invention relates to a nickel hexaaluminate-comprising catalyst for reforming hydrocarbons, preferably methane, in the presence of carbon dioxide, which comprises hexaaluminate in a proportion in the range from 65 to 95% by weight, preferably from 70 to 90% by weight, and a crystalline, oxidic secondary phase selected from the group consisting of LaAlO3, SrAl2O4 and BaAl2O4 in the range from 5 to 35% by weight, preferably from 10 to 30% by weight. The BET surface area of the catalyst is ≧5 m2/g, preferably ≧10 m2/g. The molar nickel content of the catalyst is ≦3 mol %, preferably ≦2.5 mol % and more preferably ≦2 mol %. The interlayer cations are preferably Ba and/or Sr. The process for producing the catalyst comprises the steps: (i) production of a mixture of metal salts, preferably nitrate salts of Ni and also Sr and/or La, and a nanoparticulate aluminum source, (ii) molding and (iii) calcination. The catalyst of the invention is brought into contact with hydrocarbons, preferably methane, and CO2 in a reforming process, preferably at a temperature of >800° C. The catalyst is also distinguished by structural and preferred properties of the nickel, namely that the nickel particles mostly have a tetragonal form and the particles have a size of ≦50 nm, preferably ≦40 nm and particularly preferably ≦30 nm, and are present finely dispersed as grown-on hexaaluminate particles. The catalyst has only a very low tendency for carbonaceous deposits to be formed.

    摘要翻译: 本发明涉及一种在二氧化碳存在下重整碳氢化合物(优选甲烷)的含六铝酸镍催化剂,其包含65重量%至95重量%,优选70至90重量%的六铝酸盐, 以及选自5至35重量%,优选10至30重量%范围内的LaAlO 3,SrAl 2 O 4和BaAl 2 O 4的结晶,氧化的第二相。 催化剂的BET表面积为≥5m2 / g,优选≥10m2 / g。 催化剂的摩尔镍含量为3%,优选为1%,2.5%,更优选为2%。 层间阳离子优选为Ba和/或Sr.制备催化剂的方法包括以下步骤:(i)制备金属盐,优选Ni和Sr和/或La的硝酸盐以及纳米颗粒铝源的混合物 ,(ii)成型和(iii)煅烧。 本发明的催化剂在重整过程中优选与烃,优选甲烷和CO 2接触,优选在800℃以上的温度下。催化剂的特征还在于镍的结构和优选性质,即镍 颗粒大多具有四方晶形,并且颗粒的尺寸为< nlE; 50nm,优选为< lE; 40nm,特别优选为< NE; 30nm,并且作为生长的六铝酸盐颗粒细分散存在。 催化剂仅形成碳沉积物的非常低的趋势。