Precipitated silica having high sodium sulfate content
    1.
    发明授权
    Precipitated silica having high sodium sulfate content 失效
    具有高硫酸钠含量的沉淀二氧化硅

    公开(公告)号:US5605569A

    公开(公告)日:1997-02-25

    申请号:US555552

    申请日:1995-11-08

    摘要: Particles comprising particulate amorphous precipitated silica in association with from 5 to 10 percent by weight sodium sulfate and less than 10 percent by weight water, wherein the percentages are based on the weight of the silica, the sodium sulfate, and the water, which particles have a BET surface area of from 100 to 300 m.sup.2 /g, a total intruded volume from 1.8 to 3.6 cm.sup.3 /g, and a DBP oil absorption of from 180 to 320 cm.sup.3 /100 g, may be employed in microporous battery separators to introduce all or a portion of the desired sodium sulfate to the battery electrolyte. Moreover the enhanced amount of sodium sulfate enhances silica characteristics and battery separator production.

    摘要翻译: 包含颗粒状无定形沉淀二氧化硅与5至10重量%硫酸钠和小于10重量%水的颗粒,其中百分比基于二氧化硅,硫酸钠和水的重量,该颗粒具有 100至300m2 / g的BET表面积,1.8至3.6cm3 / g的总入侵体积和180至320cm 3 / 100g的DBP吸油量可用于微孔电池隔板中以引入全部 或一部分所需的硫酸钠至电池电解质。 此外,硫酸钠的增加量增加了二氧化硅特性和电池隔膜的生产。

    Amorphous precipitated silica
    6.
    发明授权
    Amorphous precipitated silica 失效
    无定形沉淀二氧化硅

    公开(公告)号:US5922298A

    公开(公告)日:1999-07-13

    申请号:US909042

    申请日:1997-08-08

    IPC分类号: C01B33/12 C01B33/193 H01M2/16

    摘要: Amorphous precipitated silica which may be used to form battery separators of very low shrinkage is characterized by (a) a BET surface area in the range of from 60 to 200 m.sup.2 /g; (b) a CTAB surface area in the range of from 40 to 150 m.sup.2 /g; (c) a DBP oil absorption in the range of from 180 to 300 cm.sup.3 /100 g; (d) a mean ultimate particle size in the range of from 20 to 30 nm; (e) a total intruded volume in the range of from 2.5 to 4 cm.sup.3 /g; (f) an intruded volume in the range of from 0.3 to 1.2 cm.sup.3 /g for pores having diameters in the range of from 20 to 100 nm; and (g) a pore diameter at the maximum of the volume pore size distribution function in the range of from 30 to 200 nm.

    摘要翻译: 可用于形成非常低收缩率的电池隔板的无定形沉淀二氧化硅的特征在于(a)BET表面积在60至200m 2 / g的范围内; (b)CTAB表面积为40-150m2 / g; (c)DBP吸油量在180至300cm 3 / 100g的范围内; (d)20-30nm范围内的平均极限粒径; (e)2.5至4立方厘米/克范围内的总入侵体积; (f)直径为20〜100nm的孔的侵入体积为0.3〜1.2cm 3 / g; 和(g)体积孔径分布函数的最大孔径在30至200nm的范围内。