Process for synthesising aluminas in a basic medium
    1.
    发明授权
    Process for synthesising aluminas in a basic medium 有权
    在碱性介质中合成氧化铝的方法

    公开(公告)号:US06214312B1

    公开(公告)日:2001-04-10

    申请号:US09357824

    申请日:1999-07-21

    IPC分类号: C01F702

    摘要: The invention concerns a process for synthesising aluminas with a controlled porosity in which the pore diameter is in the range 0.6 nm to 80 nm. This process is carried out in a plurality of steps including at least one step a) in which an alumina precursor is prepared by hydrolysis of at least one anionic inorganic source of aluminium in the presence of at least one surfactant. Step a) of the process is carried out in an essentially aqueous medium the pH of which is generally higher than the isoelectric point of the alumina. The process of the invention also comprises at least one step b) in which the precipitate obtained is dried in air at a temperature of about 40° C. to 110° C. for a period of about 2 to 30 hours, and at least one step c) in which the dried precipitate is calcined at a temperature which is sufficient to eliminate the molecules of surfactant present in the precursor.

    摘要翻译: 本发明涉及合成具有可控孔隙率的氧化铝的方法,其中孔径在0.6nm至80nm的范围内。 该方法包括至少一个步骤a)的多个步骤,其中通过在至少一种表面活性剂的存在下水解至少一种阴离子无机铝源来制备氧化铝前体。 步骤a)该方法在基本上水性介质中进行,其pH值通常高于氧化铝的等电点。 本发明的方法还包括至少一个步骤b),其中所获得的沉淀物在空气中在约40℃至110℃的温度下干燥约2至30小时,并且至少一个 步骤c),其中干燥的沉淀物在足以消除前体中存在的表面活性剂分子的温度下煅烧。

    Hydrated aluminum compounds, their preparation and use thereof
    2.
    发明授权
    Hydrated aluminum compounds, their preparation and use thereof 失效
    水合铝化合物,其制备和用途

    公开(公告)号:US06197276B1

    公开(公告)日:2001-03-06

    申请号:US09249077

    申请日:1999-02-12

    IPC分类号: C01F702

    摘要: Hydrated aluminium compounds of the present invention are represented by the general formula nS, mM, Al2O3, xH2O where S is a surfactant or a group of surfactants, n is the number of moles of S, M is an alkaline cation, preferably selected from the group formed by Na+, K+, NH4+, m is the number of moles of M and x is the number of moles of water. The hydrated compounds are obtained from inorganic aluminium sources which are in the form of cation-monomers and/or cation-oligomers. The surfactants are anionic and/or non-ionic surfactants. When the group of surfactants comprises at least one anionic surfactant, at least one cationic surfactant can optionally be added.

    摘要翻译: 本发明的水合铝化合物由通式nS,mM,Al 2 O 3,xH 2 O表示,其中S是表面活性剂或一组表面活性剂,n是S的摩尔数,M是碱性阳离子,优选选自 由Na +,K +,NH 4 +,m形成的基团是M的摩尔数,x是水的摩尔数。 水合化合物由阳离子单体和/或阳离子低聚物形式的无机铝源获得。 表面活性剂是阴离子和/或非离子表面活性剂。 当该组表面活性剂包含至少一种阴离子表面活性剂时,可以任选地加入至少一种阳离子表面活性剂。

    Process for the synthesis of zeolites having an aluminosilicate
framework belonging to the faujasite structural family, products
obtained and their use in adsorption and catalysis
    3.
    发明授权
    Process for the synthesis of zeolites having an aluminosilicate framework belonging to the faujasite structural family, products obtained and their use in adsorption and catalysis 失效
    用于合成具有属于八面沸石结构族的铝硅酸盐骨架的沸石的方法,所获得的产物及其在吸附和催化中的用途

    公开(公告)号:US5385717A

    公开(公告)日:1995-01-31

    申请号:US933031

    申请日:1992-08-20

    摘要: An aluminosilicate gel containing a structuring agent ST and having a composition appropriate for crystallizing as a zeolite of the faujasite structural family is prepared and then subjected to a crystallization to form a zeolite precursor consisting of the said zeolite containing the structuring agent ST in its cavities and channels, and zeolite is produced by calcination of the said precursor. The structuring agent ST consists of at least one compound chosen from the polyalkylene oxides of the formula ##STR1## in which R and R', which are identical or different, each represent H or a C.sub.1 to C.sub.4 alkyl radical, X denotes H or OH, m is equal to 2 or 3 and may be different from one unit to the next and n is a number larger than 12 and preferably between 25 and 800. The zeolites obtained have a Si:Al ratio which is larger than 1 and may exceed 3 and they have a cubic symmetry. These zeolites are usable, directly or after cation exchange, as adsorbents or as catalyst components.

    摘要翻译: 制备含有结构化剂ST并且具有适合作为八面沸石结构族的沸石结晶的组成的铝硅酸盐凝胶,然后进行结晶以形成由其中含有结构化剂ST在其空腔中的所述沸石组成的沸石前体, 通道和沸石是通过煅烧所述前体产生的。 结构剂ST由至少一种选自式RO [CmH2m-1XO] nR'的聚环氧烷的化合物组成,其中R和R'相同或不同,各自表示H或C1至C4烷基, X表示H或OH,m等于2或3,并且可以不同于一个单元和下一个单元,n是大于12,优选25至800的数。所获得的沸石的Si:Al比例较大 超过1并且可以超过3并且它们具有立方对称性。 这些沸石可直接或在阳离子交换后用作吸附剂或催化剂组分。

    Catalysts based on a faujasite and its application
    4.
    发明授权
    Catalysts based on a faujasite and its application 失效
    基于八面沸石的催化剂及其应用

    公开(公告)号:US5304601A

    公开(公告)日:1994-04-19

    申请号:US777298

    申请日:1992-01-17

    摘要: A catalyst is provided which contains 1 to 99 wt. % of an inorganic binder and 99 to 1% of a zeolite consisting of a faujasite having an Si:Al synthesis ratio at least equal to 3 and 30 and the compensation cations of this zeolite consist partly or wholly of cations of one or more elements chosen from H, B, Al, Ga, In, rare earth metals and transition metals. The catalyst can also contain up to 15%, referred to the total weight of the binder and zeolite, of a catalytically active metal of the noble, non-noble transition or other type which is not already present in the compensation cations of the zeolite. The catalyst can be used in acid catalysis reactions carried out on hydrocarbon feedstock, in particular in fluidized bed catalytic cracking.

    摘要翻译: PCT No.PCT / FR91 / 00287 Sec。 371日期:1992年1月17日 102(e)日期1992年1月17日PCT 1991年4月8日PCT PCT。 公开号WO91 / 15293 日期为1991年10月17日。提供了含有1〜99重量% %的无机粘合剂和99至1%的由具有至少等于3和30的Si:Al合成比的八面沸石组成的沸石,并且该沸石的补偿阳离子部分或全部由一种或多种元素的阳离子部分或全部组成 来自H,B,Al,Ga,In,稀土金属和过渡金属。 催化剂还可以含有高达15%,即粘合剂和沸石的总重量,贵金属,非贵金属转变物或其他类型的催化活性金属,其尚不存在于沸石的补偿阳离子中。 催化剂可用于对烃原料进行的酸催化反应,特别是在流化床催化裂化中。

    Zeolite catalyst of hexagonal structure and its application
    8.
    发明授权
    Zeolite catalyst of hexagonal structure and its application 失效
    六方结构沸石催化剂及其应用

    公开(公告)号:US5273945A

    公开(公告)日:1993-12-28

    申请号:US777299

    申请日:1992-01-17

    摘要: A catalyst is provided which contains 1 to 99 wt. % of a zeolite related to faujasite and having a hexagonally symmetrical structure and an Si:Al ratio between 3 and 30. The compensation cations of this zeolite consist partly or wholly of cations of one or more elements chosen from H, B, Al, Ga, In, rare earth metals and transition metals. The catalyst can also contain up to 15%, referred to the total weight of the binder and zeolite, of a catalytically active metal of the noble, non-noble transition or other type which is not already present in the compensation cations of the zeolite. The catalyst can be used in acid catalysis reactions carried out on hydrocarbon feedstock, in particular in fluidized bed catalytic cracking.

    摘要翻译: PCT No.PCT / FR91 / 00286 Sec。 371日期:1992年1月17日 102(e)日期1992年1月17日PCT 1991年4月8日PCT PCT。 公开号WO91 / 15294 日期为1991年10月17日。提供了含有1〜99重量% 与八面沸石相关的具有六边形对称结构和Si:Al比在3和30之间的沸石%。该沸石的补偿阳离子部分或全部由选自H,B,Al,Ga的一种或多种元素的阳离子组成 ,In,稀土金属和过渡金属。 催化剂还可以含有高达15%,即粘合剂和沸石的总重量,贵金属,非贵金属转变物或其他类型的催化活性金属,其尚不存在于沸石的补偿阳离子中。 催化剂可用于对烃原料进行的酸催化反应,特别是在流化床催化裂化中。

    Synthesis of zeolites of faujasite structure
    10.
    发明授权
    Synthesis of zeolites of faujasite structure 失效
    合成沸石结构的沸石

    公开(公告)号:US5098686A

    公开(公告)日:1992-03-24

    申请号:US499272

    申请日:1990-06-08

    IPC分类号: B01J20/16 C01B39/00 C01B39/20

    摘要: A process is provided for the preparation of zeolites belonging to the faujasite structural class and exhibiting a Si:Al ratio higher than 1 in which a reaction mixture is first produced which has a pH higher than 10 and contains water, a source of tetravalent silicon, a source of trivalent aluminum, a source of hydroxide ions in the form of a strong inorganic or orgnaic base and a structuring agent ST so as to produce an aluminosilicate gel having the desired composition to permit its crystallization into a compound of the faujasite structural class. The gel obtained is kept at a temperature, pressure and for a sufficient period to effect the crystallization of the gel into a precursor of the zeolite consisting of the zeolite trapping the structuring agent ST in its cavities and the precursor is then subjected to a calcination to destroy the structuring agent and to produce the zeolite. The structuring agent ST consists of at least one compound belonging to the group formed by the carbon-containing macrorings and macropolyrings which contain in the rings, heteroatoms chosen from oxygen, nitrogen, silicon and sulphur, and which contain 10 to 24 atoms per ring. Precursors of the zeolites are also provided.

    摘要翻译: PCT No.PCT / FR89 / 00522 Sec。 371日期:1990年6月8日 102(e)日期1990年6月8日PCT提交1989年10月10日PCT公布。 出版物WO90 / 03944 日本1990年04月19日提供了一种制备属于八面沸石结构级的沸石的方法,其表现出高于1的Si:Al比,其中首先制备pH高于10并含有水的反应混合物 ,四价硅源,三价铝源,强无机或有机碱形式的氢氧根离子源和结构化剂ST,以产生具有所需组成的硅铝酸盐凝胶,使其结晶成为 八面沸石结构类化合物。 将获得的凝胶保持在温度,压力和足够的时间以使凝胶结晶成沸石的前体,该沸石由在其空腔中俘获结构化剂ST的沸石组成,然后将前体煅烧至 破坏结构剂并产生沸石。 结构化剂ST由至少一种属于由含碳的大环形成的基团和在聚合物环中含有选自氧,氮,硅和硫的杂原子,并且每个环含有10至24个原子的大分子形成的化合物组成。 还提供沸石的前体。