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    Spheroidal alumina particulates having bifold porosity and process for their preparation
    2.
    发明授权
    Spheroidal alumina particulates having bifold porosity and process for their preparation 失效
    具有双孔孔隙的球状氧化铝颗粒及其制备方法

    公开(公告)号：US4315839A

    公开(公告)日：1982-02-16

    申请号：US124778

    申请日：1980-02-26

    申请人： Gilbert Bouge ,  Roland Jacques ,  Regis Poisson ,  Laurent Seigneurin

    发明人： Gilbert Bouge ,  Roland Jacques ,  Regis Poisson ,  Laurent Seigneurin

    IPC分类号： B01J2/08 ,  B01J21/04 ,  B01J35/10 ,  C01F7/02 ,  C01F7/14 ,  B01J35/08

    CPC分类号： B01J21/04 ,  B01J2/08 ,  B01J35/10 ,  C01F7/02 ,  C01F7/141 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/109 ,  C01P2002/02 ,  C01P2002/60 ,  C01P2002/70 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/13 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/21 ,  Y10S502/503

    摘要： Spheroidal alumina particulates having bifold porosity are prepared by (i) intimately admixing, at a pH of less than about 7.5, (a) a sol of a member selected from the group consisting of ultrafine boehmite and pseudo-boehmite, said sol being devoid of amorphous alumina and the concentration by weight thereof, in content by weight of Al.sub.2 O.sub.3, being between 5 and 25%, with (b) from 30 to 95% by weight, based upon the total solids content of the admixture, of spheroidal alumina particulates essentially completely in at least one of the phases eta, gamma, delta and theta, such particulates having a micropore volume ranging from about 0.4 to 1 cm.sup.3 /g, a specific surface ranging from about 100 to 350 m.sup.2 /g, and particle diameters ranging from about 1 to 50 microns; (ii) prilling said intimate admixture into spheroidal particulates and gelling the same; and then, (iii) recovering, drying and calcining said gelled particulates at a temperature of from 550.degree. to 1100.degree. C.The resultant particulates having bifold porosity are useful as catalysts or catalyst supports.

    摘要翻译： 通过（i）在小于约7.5的pH下，（a）选自由超细勃姆石和假勃姆石组成的组中的成员的溶胶紧密混合，制备具有双重孔隙度的球状氧化铝颗粒，所述溶胶不含 无定形氧化铝及其以Al 2 O 3的重量含量为5-25％的重量浓度，（b）基于混合物的总固体含量为30至95重量％，基本上为球形氧化铝颗粒 完全在相中的至少一个阶段eta，γ，δ和θ，这样的微粒具有约0.4至1cm 3 / g的微孔体积，约100至350m 2 / g的比表面积， 约1至50微米; （ii）将所述紧密混合物造粒成球状颗粒并凝胶化; 然后，（iii）在550℃至1100℃的温度下回收，干燥和煅烧所述凝胶状颗粒。所得到的具有二叉孔隙的颗粒可用作催化剂或催化剂载体。

    Process for the preparation of crystalline, alkaline, aluminosilicate
    3.
    发明授权
    Process for the preparation of crystalline, alkaline, aluminosilicate 失效
    制备结晶，碱性，硅铝酸盐的方法

    公开(公告)号：US4263266A

    公开(公告)日：1981-04-21

    申请号：US86128

    申请日：1979-10-18

    申请人： Max Michel ,  Georges Vrisakis ,  Laurent Seigneurin ,  Gilbert Bouge

    发明人： Max Michel ,  Georges Vrisakis ,  Laurent Seigneurin ,  Gilbert Bouge

    IPC分类号： C01B39/02 ,  C01B39/16 ,  C11D3/12 ,  C01B33/28

    CPC分类号： C11D3/128 ,  C01B33/2815 ,  Y10S423/24

    摘要： A crystalline, alkali metal aluminosilicate of type 4A is prepared by reaction between an aqueous solution of an alkali metal silicate and an aqueous solution of an alkali metal aluminate, and includes the steps of (i) introducing a flow of at least a portion of at least one of said reactant solutions into a reaction zone; (ii) co-introducing with said flow (i) an in line flow of at least a portion of the other reactant solution into said reaction zone; (iii) thus establishing in said reaction zone a liquid mixture of said aqueous reactant solutions and said liquid admixture comprising a gel-formation medium; (iv) establishing gel-formation elevated temperatures within said gel-formation medium to effect formation of a mixture comprising an aluminosilicate gel-phase and a mother liquid; (v) recycling said gel-phase/mother liquor to said flow (i); (vi) maintaining said gel-phase comprising said gel-formation medium under such elevated temperatures for such period of time as to effect crystallization of the aluminosilicate, and whereby a suspension of aluminosilicate crystals of type 4A in liquid phase results; and (vii) thence recovering said aluminosilicate crystals from said resulting liquid phase.The resultant aluminosilicate crystals are useful, e.g., detergent additives.

    摘要翻译： 通过碱金属硅酸盐的水溶液和碱金属铝酸盐的水溶液之间的反应制备4A型结晶的碱金属硅铝酸盐，并且包括以下步骤：（i）引入至少一部分在 所述反应物溶液中的至少一种进入反应区; （ii）与所述流（i）共同引入至少一部分其它反应物溶液的入口流入所述反应区; （iii）因此在所述反应区域中建立所述反应物水溶液和所述液体混合物的液体混合物，其包含凝胶形成介质; （iv）在所述凝胶形成介质内建立凝胶形成升高的温度以形成包含硅铝酸盐凝胶相和母液的混合物; （v）将所述凝胶相/母液再循环至所述流（i）; （vi）将所述凝胶形成介质的所述凝胶相在这样升高的温度下保持一段时间，以使铝硅酸盐发生结晶，由此产生液相中的4A型硅铝酸盐晶体的悬浮液; 和（vii）从所述液相中回收所述硅铝酸盐晶体。 所得的铝硅酸盐晶体是有用的，例如洗涤剂添加剂。

    Process for the preparation of calcium fluosilicate as a raw material for obtaining calcium fluoride and pure fluosilicic acid
    6.
    发明授权
    Process for the preparation of calcium fluosilicate as a raw material for obtaining calcium fluoride and pure fluosilicic acid 失效
    制备氟化钙作为原料的氟化钙和纯氟尿酸的方法

    公开(公告)号：US5055281A

    公开(公告)日：1991-10-08

    申请号：US080228

    申请日：1987-07-27

    申请人： Laurent Seigneurin

    发明人： Laurent Seigneurin

    IPC分类号： C01B33/10

    CPC分类号： C01B33/103

    摘要： Process for the production of anhydrous calcium fluosilicate from anhydrous calcium chloride and impure fluosilicic acid solution, a by-product of the acid treatment of phosphorus ores containing fluorine, characterized in that a calcium fluosilicate dihydrate is precipitated at low temperature and quantitatively by suitable adjustment of the fluosilicic acid concentration and the molar ratio CaCl.sub.2 /H.sub.2 SiF.sub.6 and that after filtration, washing and drying of the precipitate, an anhydrous calcium fluosilicate which can be easily decomposed by heat treatment is obtained to restore calcium fluoride and silicon tetrafluoride suitable for the manufacture of pure hydrofluoric acid and fluosilicic acid.For gravimetric concentrations of H.sub.2 SiF.sub.6 >25% and molar concentration ratios CaCl.sub.2 /H.sub.2 SiF.sub.6 between 2 and 5, the yields of the anhydrous calcium fluosilicate obtained are greater than 94%.

    摘要翻译： 从无水氯化钙和不纯的氟硅酸溶液中生产无水氯硅酸钙的方法，其是含氟的磷矿的酸处理的副产物，其特征在于硅酸钙二水合物在低温下沉淀并定量地通过适当调节 氟硅酸浓度和CaCl 2 / H 2 SiF 6的摩尔比，过滤，洗涤和干燥沉淀后，得到可通过热处理容易分解的无水氟硅酸钙，以恢复适用于制备纯的氟化钙和四氟化硅 氢氟酸和氟硅酸。 对于H 2 SiF 6> 25％的重量浓度和2至5之间的CaCl 2 / H 2 SiF 6的摩尔浓度比，获得的无水氟硅酸钙的产率大于94％。

    Preparation of aromatic/aliphatic nitriles
    8.
    发明授权
    Preparation of aromatic/aliphatic nitriles 失效
    芳香/脂族腈的制备

    公开(公告)号：US4438042A

    公开(公告)日：1984-03-20

    申请号：US378226

    申请日：1982-05-14

    申请人： Roland Jacques ,  Michel Reppelin ,  Laurent Seigneurin

    发明人： Roland Jacques ,  Michel Reppelin ,  Laurent Seigneurin

    IPC分类号： C07B61/00 ,  B01J21/00 ,  B01J27/12 ,  C07C67/00 ,  C07C253/00 ,  C07C255/32 ,  C07C255/33 ,  C07C255/49 ,  C07C255/50 ,  C07C255/54 ,  C07C313/00 ,  C07C323/62 ,  C07C120/10

    CPC分类号： B01J27/12 ,  C07C253/20

    摘要： Aromatic/aliphatic nitriles having the formula:Ar--A--CN (I)wherein Ar is phenyl or substituted phenyl and A is a direct chemical bond or a hydrocarbon having from 1 to 6 carbon atoms, are conveniently prepared by heating to a temperature ranging from about 450.degree. C. to about 550.degree. C. a formamide or formanilide having the formula:Ar--A--NHCHO (II)or an amide having the formula:Ar--A--CONH.sub.2 (III)in the presence of a fluorinated siliceous catalyst, said catalyst having been prepared by (i) impregnating a particulate silica prepared by the precipitation of sodium silicate with sulfuric acid, with a dilute aqueous solution of hydrofluoric acid, said hydrofluoric acid solution having a concentration in HF of less than about 5% by weight, and the ratio by weight of the hydrofluoric acid contained in said aqueous solution thereof to the silica being less than about 5%, followed by (ii) drying the catalyst thus impregnated.

    摘要翻译： 具有下式的芳族/脂族腈通过加热至温度范围，方便地制备，其中Ar为苯基或取代苯基，A为直接化学键，或具有1至6个碳原子的烃 具有下式的Ar-A-NHCHO（II）或具有式Ar-A-CONH 2（III）的酰胺的甲酰胺或甲酰苯胺在氟化硅质存在下的约450℃至约550℃。 催化剂，所述催化剂通过（i）用硫酸沉淀硅酸钠制备的颗粒二氧化硅与稀氢氟酸水溶液浸渍制备，所述氢氟酸溶液的HF浓度小于约5％ ，并且所述水溶液中所含的氢氟酸与二氧化硅的重量比小于约5％，然后（ii）干燥所浸渍的催化剂。

    High specific surface hydrargillite
    9.
    发明授权
    High specific surface hydrargillite 失效
    高比表面水合物

    公开(公告)号：US4612184A

    公开(公告)日：1986-09-16

    申请号：US707572

    申请日：1985-03-04

    申请人： Laurent Seigneurin

    发明人： Laurent Seigneurin

    IPC分类号： C01F7/14 ,  C01F7/02

    CPC分类号： C01F7/141 ,  C01P2004/62 ,  C01P2006/12

    摘要： A high specific surface hydrargillite, well adopted as filler material or primer particulates in the production of finely divided aluminum trihydroxide by decomposition of Bayer process aluminate liquors, is readily prepared by (i) reacting an alkali metal aluminate with hydrofluoric acid at a temperature ranging from about 5.degree. to 95.degree. C., the amount of said hydrofluoric acid ranging from about 25% to 90% of that amount stoichiometrically required for complete neutralization of the alkalinity of said aluminate, (ii) optionally treating the hydrargillite precipitate which results at a temperature of from about 5.degree. to 95.degree. C. for from about one-half to 10 hours, and thence (iii) recovering said hydrargillite precipitate, preferably by filtering, washing and drying.

    摘要翻译： 通过（i）使碱金属铝酸盐与氢氟酸在一定温度范围内反应，可以很容易地制备高比表面水合物，作为填充材料或底漆颗粒，通过分解拜耳法铝酸盐液体生产精细分解的氢氧化铝。 约5℃至95℃，所述氢氟酸的量为所述铝酸盐的碱度完全中和所需的化学计量所需量的约25％至90％，（ii）任选地处理水合沉淀物，其导致在 温度为约5℃至95℃，时间为约半至10小时，因此（iii）优选通过过滤，洗涤和干燥来回收所述水镁石沉淀物。

    Hydroxychlorides of aluminum and method
    10.
    发明授权
    Hydroxychlorides of aluminum and method 失效
    铝的羟基氯化物和方法

    公开(公告)号：US4034067A

    公开(公告)日：1977-07-05

    申请号：US687019

    申请日：1976-05-17

    申请人： Laurent Seigneurin ,  Michel Brunet

    发明人： Laurent Seigneurin ,  Michel Brunet

    IPC分类号： C01F7/56 ,  C02F1/52 ,  C01B7/00

    CPC分类号： C02F1/5245 ,  C01F7/56 ,  C01P2004/61 ,  C01P2006/12

    摘要： The preparation of a material consisting essentially or largely of aluminum hydroxychlorides having the general formula Al.sub.2 (OH).sub.X Cl.sub.6.sub.-X, in which X is a value up to 5 or more and obtained by reacting active alumina, secured by partial dehydration of hydrates of alumina, with hydrochloric acid or aluminum chloride in which the active alumina has a specific surface area of at least 200 m.sup.2 /g.

    摘要翻译： 基本上或大部分由具有通式Al 2（OH）XCl 6-X的羟基氯化铝组成的材料的制备，其中X是高达5或更高的值，并且通过使氧化铝的水合物部分脱水获得的活性氧化铝 ，其中活性氧化铝的比表面积为至少200m 2 / g的盐酸或氯化铝。