Adsorptive use of crystalline metallophosphate compositions
    3.
    发明授权
    Adsorptive use of crystalline metallophosphate compositions 失效
    吸附性使用结晶金属磷酸盐组合物

    公开(公告)号:US4385994A

    公开(公告)日:1983-05-31

    申请号:US315055

    申请日:1981-10-26

    摘要: A novel family of crystalline, microporous aluminophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures of aluminophosphate gels containing a molecular structure forming template. The family comprises a number of distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporous crystalline adsorbents with uniform pores, the dimensions of which vary, among the individual species, from about 3A to 10A diameter. The compositions represent a new class of adsorbents of the molecular sieve type, and also exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.

    摘要翻译: 通过在含有分子结构形成模板的磷酸铝凝胶的高温下通过水热结晶合成了一系列结晶的微孔磷酸铝组合物。 家庭包括许多不同的物种,每个都有独特的晶体结构。 煅烧从晶体间隙空间中除去挥发性的外来物质,并产生具有均匀孔的微孔结晶吸附剂,其尺寸在单个物种之间变化,从约3A至10A直径。 该组合物代表了一类新型的分子筛型吸附剂,并且还表现出与沸石分子筛有些类似的特性,使得它们可用作化学反应如烃转化中的催化剂或催化剂。

    Process for the preparation of stable silica sol
    4.
    发明授权
    Process for the preparation of stable silica sol 失效
    制备稳定硅溶胶的方法

    公开(公告)号:US4343717A

    公开(公告)日:1982-08-10

    申请号:US119649

    申请日:1980-02-08

    申请人: Brent M. Lok

    发明人: Brent M. Lok

    IPC分类号: C01B33/142 B01J13/00

    CPC分类号: C01B33/142

    摘要: Stable, colloidal, silica sol is provided by a process which comprises vigorously mixing a slurry of calcium silicate with a dilute acid having a pK.sub.a value of less than about 8, such as sulfuric acid, and thereafter separating the sol from the insoluble precipitate of calcium salt. The process provides an inexpensive method for production of the sol as opposed to those methods which currently use sodium silicate as the starting material.

    摘要翻译: 稳定的胶态二氧化硅溶胶通过一种方法提供,该方法包括将硅酸钙浆料与pKa值小于约8的稀酸如硫酸剧烈混合,然后将溶胶与不溶性钙沉淀物分离 盐。 与目前使用硅酸钠作为原料的那些方法相反,该方法提供了用于制备溶胶的廉价方法。

    Zeolite LZ-135 and process for preparing same
    10.
    发明授权
    Zeolite LZ-135 and process for preparing same 失效
    沸石LZ-135及其制备方法

    公开(公告)号:US4857288A

    公开(公告)日:1989-08-15

    申请号:US50017

    申请日:1987-05-15

    IPC分类号: B01J29/70 C01B39/48

    CPC分类号: B01J29/70 C01B39/48

    摘要: Novel crystalline aluminosilicate composition denominated LZ-135 and having uniform pore diameters of approximately 4.3 Angstroms is prepared hydrothermally from a reaction mixture containing as essential reagents, water, an alkali or alkaline earth oxide, alumina, silica and as the templating agent a mixture of the ion species tetramethylammonium ions and tetraethylammonium.

    摘要翻译: 以含有作为必需试剂,水,碱金属或碱土金属氧化物,氧化铝,二氧化硅和作为模板剂的反应混合物水热制备名为LZ-135并具有约4.3埃均匀孔径的新型结晶硅铝酸盐组合物, 离子物质四甲基铵离子和四乙基铵。