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    • 2. 发明授权
    • Zirconium-doped pseudobehmite, process for its production and use thereof
    • 锆掺杂的假木质石,其生产和使用的方法
    • US5032378A
    • 1991-07-16
    • US296965
    • 1989-01-13
    • Anh T. LiuRudolf SchwarzPeter Kleinschmit
    • Anh T. LiuRudolf SchwarzPeter Kleinschmit
    • B01J21/06B01J35/10B01J37/00C01F7/00C01F7/34C01G25/00
    • B01J21/066B01J37/0045C01F7/00C01F7/34C01G25/00B01J35/1019B01J35/1038C01P2002/52C01P2002/72C01P2006/12
    • Zirconium-doped pseudoboehmite with the following properties: zirconium content of 0.5 to 10 mol % relative to Al water content of 20 to 35 weight percent total of the anionic impurities less than 0.5 weight percent. It is synthesized by a process wherein zirconium salt is added in calculated quantity to an aqueous aluminum sulfate solution, the resulting mixture is fed simultaneously with a sodium aluminate liquor into a water pool having a temperature of 50.degree. to 100.degree. C., thereby precipitating zirconium-doped alumina gel while a pH of 3.5 to 8 is maintained, the pH of the suspension is adjusted after addition of the aluminum sulfate solution to 8.5 to 10.5 by further addition of sodium aluminate liquor, the suspension is digested if necessary at the pH of 8.5 to 10.5 and the temperature of 50.degree. to 100.degree. C. for a period of up to 24 hours, the formed pseudoboehmite crystals are filtered off, the filter cake is redispersed with water and the suspension is sprayed-dried. By calcining at 700.degree. to 1100.degree. C., preferably at 850.degree. to 950.degree. C., the pseudoboehmite is further processed to zirconium-doped gamma-alumina suitable for automobile exhaust catalysts.
    • 锆掺杂的假勃姆石具有以下性质:锆含量相对于Al含水量为0.5〜10摩尔%,含水量为20〜35重量%,阴离子杂质总量小于0.5重量%。 通过其中锆盐以计算量加入到硫酸铝水溶液中的方法合成,将所得混合物与铝酸钠液体同时加入到温度为50-100℃的水池中,由此沉淀 锆掺杂的氧化铝凝胶,同时保持3.5至8的pH,通过进一步加入铝酸钠溶液将硫酸铝溶液加入到8.5至10.5之后调节悬浮液的pH,如果需要,将悬浮液在pH 为8.5〜10.5,温度为50〜100℃,长达24小时,滤出形成的假勃姆石晶体,将滤饼再用水分散,将悬浮液喷雾干燥。 通过在700〜1100℃,优选在850〜950℃下煅烧,将其进一步处理适合于汽车尾气催化剂的锆掺杂γ-氧化铝的假勃姆石。
    • 3. 发明授权
    • Form body for heat insulation and vacuum insulation panel with
asymmetric design
    • 隔热型绝热面板和非对称设计的真空绝热面板
    • US5316816A
    • 1994-05-31
    • US7129
    • 1993-01-22
    • Gerhard SextlHans StrackRoland ReuterIlona FussPeter KleinschmitRudolf Schwarz
    • Gerhard SextlHans StrackRoland ReuterIlona FussPeter KleinschmitRudolf Schwarz
    • F16L59/02B32B1/06B32B5/16
    • F16L59/028Y10T428/231Y10T428/237Y10T428/238Y10T428/239
    • A shaped body, preferably plate-shaped, for use as heat insulation, formed of (a) a finely distributed, powdery or fibrous substance, (b) a microporous casing, and (c) a gastight and watertight, metal-free casing. The shaped body is produced by drying a powdery or fibrous substance if necessary, optionally placing it into a microporous casing, optionally pressing and then optionally drying. Thereafter, the powdery substance is placed with the microporous casing into a gastight and watertight, metal-free casing. This gastight and watertight casing is optionally evacuated and sealed. Furthermore, a shaped article, preferably plate-shaped, for use as heat insulation, produced from (a) a finely distributed, powdery or fibrous substance with a water absorption capacity of 4 to 50% by weight at 23.degree. C. and 85% relative humidity, (b) a casing of two parts with asymmetric design which contains this finely distributed, powdery or fibrous substance, the first part of the casing being metal-free and concave in such a manner that it is completely filled by the preferably plate-like shaped article and the second part being metal-free or metallic and planar and connected to the trough in such a manner that a gastight and water-vapor-tight seal is assured and both parts having water-vapor-permeabilities between 0 and 0.2 g/m.sup.2 /d at 23.degree. C. and 85% relative humidity and gas permeabilities for N.sub.2, O.sub.2 and CO.sub.2 of in sum 0 to 0.5 cm.sup.3 /m.sup.2 d/bar at 23.degree. C.; the shaped article having the property of absorbing water up to an amount of 2 to 15% by weight without its thermal conductivity deteriorating more than 25%.
    • 由(a)精细分布的粉状或纤维状物质形成的成型体,优选为板状,(b)微孔外壳,(c)气密和水密的无金属外壳。 如果需要,通过干燥粉末或纤维状物质,任选地将其置于微孔套管中,任选地按压然后任选地干燥而制成成形体。 此后,将粉状物质与微孔套管一起置于气密和防水,无金属的外壳中。 这种气密和防水外壳可选择地抽真空并密封。 此外,用作绝热的成型制品,优选为板状,由(a)精细分布的粉末状或纤维状物质制成,其吸水量在23℃下为4〜50重量%,85重量% 相对湿度,(b)具有不对称设计的两部分的壳体,其包含这种精细分布的粉状或纤维状物质,壳体的第一部分是无金属和凹入的,使得其被优选板完全填充 并且第二部分是无金属的或金属的和平面的,并且以这样的方式连接到槽,使得保证气密和水蒸气密封,并且两个部分的水蒸汽渗透性在0和0.2之间 在23℃和85%相对湿度下的g / m 2 / d和在23℃下为0至0.5cm 3 / m 2d / bar的N 2,O 2和CO 2的气体渗透性。 该成型制品具有吸水量至多2至15重量%的特性,而其导热率不会降低25%以上。
    • 10. 发明授权
    • Aqueous suspension of bentonite and its use for coating thermal
insulating molded articles
    • 膨润土的水悬浮液及其用于涂覆绝热模制品的用途
    • US4670101A
    • 1987-06-02
    • US749480
    • 1985-06-27
    • Sabine SchmidtPeter KleinschmitRudolf Schwarz
    • Sabine SchmidtPeter KleinschmitRudolf Schwarz
    • C04B30/02D21F11/00
    • C04B30/02
    • There is prepared an aqueous suspension which in addition to water, consists of 2 to 50 weight % of a mixture of bentonite and inorganic fibers, with the portion of inorganic fiber being 1 to 30 weight % and the portion of bentonite being 1 to 30 weight % and wherein the total amount of solids does not exceed 50 weight %. With the suspension there is attained an improvement of the mechanical properties of thermal insulating molded objects which are employed for thermal insulation and which for example, contain pyrogenically produced silica as a filler by delivery of this suspension on the thermal insulating plate. The suspension can also be delivered on thermal insulating molded bodies on which there is pressed a fiber net or a fiber felt. After applying the suspension several thermal insulating molded bodies can be joined together where the coating formed consisting of bentonite and inorganic fibers acts as binder. The heat insulating molded article in addition to this layer, can have one or more additional coatings based on organic or inorganic lacquer systems, silicone compositions or low melting glazes.
    • 制备水性悬浮液,除了水之外,由2〜50重量%的膨润土和无机纤维​​的混合物组成,无机纤维的比例为1〜30重量%,膨润土的比例为1〜30重量% %,其中固体的总量不超过50重量%。 通过悬浮液,绝热成型体的机械性能得到改善,其用于隔热,并且例如通过将该悬浮液输送到绝热板上而含有热解法生产的二氧化硅作为填料。 该悬浮液也可以在其上挤压纤维网或纤维毡的隔热成型体上输送。 应用悬浮液后,几个绝热成型体可以结合在一起,其中由膨润土和无机纤维​​组成的涂层作为粘合剂。 除了该层之外,绝热模制品可以具有一种或多种基于有机或无机漆系统,硅酮组合物或低熔点釉料的附加涂层。