Process for Making Crystalline Metallosilicates
    1.
    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。