Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins
    22.
    发明授权
    Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins 有权
    含有菱沸石的分子筛的合成及其在含氧化合物转化为烯烃的用途

    公开(公告)号:US08268277B2

    公开(公告)日:2012-09-18

    申请号:US12477808

    申请日:2009-06-03

    IPC分类号: C01B37/08

    摘要: In a method of synthesizing a silicoaluminophosphate molecular sieve having 90+% CHA framework-type character, a reaction mixture is prepared comprising sources of water, silicon, aluminum, and phosphorus, as well as an organic template. In one aspect, the reaction mixture is heated at more than 10° C./hour to a crystallization temperature and is retained at the crystallization temperature or within the crystallization temperature range for a crystallization time from 16 hours to 350 hours to produce the silicoaluminophosphate molecular sieve. In another aspect, the reaction mixture is heated at less than 10° C./hour to a crystallization temperature from about 150° C. to about 225° C. and is then retained there for less than 10 hours to produce the silicoaluminophosphate molecular sieve. The molecular sieve can then be recovered from the reaction mixture and, preferably, used in a hydrocarbon conversion process, such as oxygenates to olefins.

    摘要翻译: 在合成具有90 + CHA框架型特征的硅铝磷酸盐分子筛的方法中,制备包含水,硅,铝和磷源以及有机模板的反应混合物。 在一个方面,将反应混合物在大于10℃/小时加热至结晶温度,并保持在结晶温度或结晶温度范围内,结晶时间为16小时至350小时,以产生硅铝磷酸盐分子 筛。 在另一方面,将反应混合物在小于10℃/小时加热至约150℃至约225℃的结晶温度,然后将其保留在少于10小时以产生硅铝磷酸盐分子筛 。 然后可以从反应混合物中回收分子筛,并且优选用于烃转化方法,例如含氧化合物至烯烃。

    Method Of Preparing And Using A Molecular Sieve
    23.
    发明申请
    Method Of Preparing And Using A Molecular Sieve 审中-公开
    制备和使用分子筛的方法

    公开(公告)号:US20100087610A1

    公开(公告)日:2010-04-08

    申请号:US12533745

    申请日:2009-07-31

    IPC分类号: C08F4/52 C01B37/08 C07C1/00

    摘要: A crystalline microporous silicoaluminophosphate (SAPO) molecular sieve is prepared by: (a) providing a reaction mixture having a molar composition within the following ranges: P:Al from 0.75 to 1.25, Si:Al2 from 0.01 to 0.32, H2O:Al2 from 25 to 50, and R:Al2 from 1 to 3, where R designates a structure directing agent (template), and wherein the molar ratios for the aluminum, phosphorus, and silicon sources are calculated based on the oxide forms; (b) heating the mixture to a crystallization temperature of between 150° C. to 250° C. to form the crystalline molecular sieve within the reaction mixture; and (c) following crystallization in step (b), aging the crystalline molecular sieve in an alkaline liquid at a temperature below the crystallization temperature from 0.5 hour for up to 120 hours. Aging can affect both catalyst life and catalyst activity.

    摘要翻译: 通过以下步骤制备结晶微孔硅铝磷酸盐(SAPO)分子筛:(a)提供具有以下范围内的摩尔组成的反应混合物:P:Al为0.75至1.25,Si:Al 2为0.01至0.32,H 2 O:Al 2为25 至50,R:Al 2为1至3,其中R表示结构导向剂(模板),其中基于氧化物形式计算铝,磷和硅源的摩尔比; (b)将混合物加热至150℃至250℃的结晶温度以在反应混合物内形成结晶分子筛; 和(c)在步骤(b)中结晶之后,在低于结晶温度的温度下将结晶分子筛在碱性液体中老化0.5小时达120小时。 老化可影响催化剂寿命和催化剂活性。

    Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins
    29.
    发明授权
    Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins 有权
    含有菱沸石的分子筛的合成及其在含氧化合物转化为烯烃的用途

    公开(公告)号:US07754187B2

    公开(公告)日:2010-07-13

    申请号:US11820908

    申请日:2007-06-21

    IPC分类号: C01B37/02 C01B39/04

    摘要: A method is disclosed of synthesizing a crystalline material comprising a CHA framework type molecular sieve and having a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to less than 0.01. The method comprises preparing a reaction mixture capable of forming said material, said mixture comprising a source of water, a source of an oxide of a tetravalent element Y and optionally a source of an oxide of a trivalent element X, wherein the reaction mixture is substantially free of fluoride ions added as HF; maintaining the reaction mixture under conditions sufficient to form crystals of the crystalline material; and than recovering the crystalline material. The reaction mixture comprises either a specific directing agent for directing the formation of a CHA framework type molecular sieve and/or a H2O:YO2 molar ratio of greater than 20. In one embodiment, the resultant crystalline material is free of stacking faults and/or any intergrown phase with an AEI framework type molecular sieve.

    摘要翻译: 公开了一种合成包含CHA骨架型分子筛并具有摩尔关系的组成的结晶材料的方法:(n)X 2 O 3:YO 2,其中X是三价元素; Y是四价元素; 并且n为0至小于0.01。 该方法包括制备能够形成所述材料的反应混合物,所述混合物包含水源,四价元素Y的氧化物源和任选的三价元素X的氧化物源,其中反应混合物基本上 不含氟离子作为HF添加; 在足以形成结晶材料晶体的条件下保持反应混合物; 而不是回收结晶材料。 反应混合物包括用于引导形成CHA骨架型分子筛和/或H 2 O:YO 2摩尔比大于20的特定导向剂。在一个实施方案中,所得结晶材料不含堆垛层错和/或 任何与AEI框架型分子筛的共生相。