Catalyst in the form of grains comprising an acidic porous core surrounded by a uniform outer layer
    6.
    发明授权
    Catalyst in the form of grains comprising an acidic porous core surrounded by a uniform outer layer 失效
    包含由均匀外层包围的酸性多孔核的颗粒形式的催化剂

    公开(公告)号:US08258071B2

    公开(公告)日:2012-09-04

    申请号:US10587854

    申请日:2005-01-13

    IPC分类号: B01J29/06

    摘要: The invention relates to a catalyst that comes in the form of grains, each grain consisting of a core covered by at least one external layer, the core consisting of an acidic porous solid and having a size of between 0.1 micron and 0.4 millimeter, in which the external layer has a uniform thickness with a uniformity criterion C, which is less than 0.30, whereby said uniformity criterion C is defined as being equal to an average, on a number N of catalyst grain samples, of the ratio of the difference between the maximum thickness, Eimax, of the external layer and the minimum thickness, Eimin, of this same layer to the average of these two thicknesses Eimax and Eimin.

    摘要翻译: 本发明涉及一种呈颗粒形式的催化剂,每个颗粒由至少一层外层覆盖的芯组成,芯由酸性多孔固体组成,尺寸为0.1微米至0.4毫米,其中 外层具有均匀的厚度,其均匀性标准C小于0.30,其中所述均匀性标准C被定义为等于催化剂颗粒样品数目N上的平均值 最大厚度,Eimax以及最小厚度Eimin,与该两个厚度Eimax和Eimin的平均值相同。

    Process for Making Crystalline Metallosilicates
    7.
    发明申请
    Process for Making Crystalline Metallosilicates 审中-公开
    制备结晶金属硅酸盐的方法

    公开(公告)号:US20110190561A1

    公开(公告)日:2011-08-04

    申请号:US12994561

    申请日:2009-02-24

    IPC分类号: C07C1/20 C01B39/00 C01B39/02

    摘要: The present invention relates to a process for making a crystalline metallosilicate composition comprising crystallites having an inner part (the core) and an outer part (the outer layer or shell) such that: the ratio Si/metal is higher in the outer part than in the inner part, the crystallites have a continuous distribution of metal and silicon over the crystalline cross-section, said process comprising: a) providing an aqueous medium comprising OH— anions and a metal source, b) providing an aqueous medium comprising an inorganic source of silicon and optionally a templating agent, c) optionally providing a non aqueous liquid medium comprising optionally an organic source of silica, d) mixing the medium a), b) and the optional c) at conditions effective to crystallyze the desired metallosilicate, e) recovering the desired metallosilicate, wherein in the mixture a)+b)+c), before crystallization, the ratio Si org/Si inorganic is

    摘要翻译: 本发明涉及一种制备结晶金属硅酸盐组合物的方法,其包含具有内部部分(芯部)和外部部分(外层或外壳)的微晶,使得:外部部分的Si /金属比例高于 所述内部部分,所述微晶在结晶截面上具有金属和硅的连续分布,所述方法包括:a)提供包含OH-阴离子和金属源的水性介质,b)提供包含无机源的水性介质 的硅和任选的模板剂,c)任选地提供包含任选的二氧化硅有机源的非水性液体培养基,d)在有效地使所需的金属硅酸盐水解的条件下,将培养基a),b)和任选的c) )回收所需的金属硅酸盐,其中在混合物a)+ b)+ c)中,在结晶之前,Si org / Si无机物的比例<0.3,有利地<0.2,优选为0,摩尔浓度 tio OH- / SiO 2为至少0.3,有利地为0.3至0.62,优选为0.31至0.61,更优选为0.32至0.61,非常优选为0.33至0.6,混合物a)+ b)+ c), 在结晶之前,高于13,优选高于13.1,更优选高于13.2,还更优选高于13.3,最优选高于13.4。