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    • 3. 发明授权
    • Reduction of oxides of nitrogen in a gas stream using boron-containing molecular sieve CHA
    • 使用含硼分子筛CHA还原气流中的氮氧化物
    • US07749471B2
    • 2010-07-06
    • US11941722
    • 2007-11-16
    • Lun-Teh YuenStacey I. Zones
    • Lun-Teh YuenStacey I. Zones
    • B01D53/56
    • B01D53/9418B01D2255/50B01J29/86Y02T10/24
    • A process for reduction of oxides of nitrogen contained in a gas stream comprising contacting the gas stream with a boron-containing molecular sieve, the boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof; and wherein the mole-ratio of silicon oxide to boron oxide in said boron-containing molecular sieve is between 15 and 125. A method for reduction of oxides of nitrogen, comprising a) selecting the boron-containing molecular sieve; and b) contacting a gas stream with the molecular sieve. A method for reduction of oxides, comprising: a) selecting the boron-containing molecular sieve containing a metal or metal ions capable of catalyzing the reduction of the oxides of nitrogen; and b) contacting an exhaust stream of an internal combustion engine with the molecular sieve.
    • 一种还原包含在气流中的氮氧化物的方法,包括使气流与含硼分子筛接触,所述含硼分子筛具有CHA晶体结构,并且包含(1)氧化硅和(2)氧化硼 或氧化硼和氧化铝的组合,氧化铁,氧化钛,氧化镓及其混合物; 并且其中所述含硼分子筛中氧化硅与氧化硼的摩尔比为15至125.一种还原氮氧化物的方法,包括:a)选择含硼分子筛; 和b)使气体流与分子筛接触。 一种还原氧化物的方法,包括:a)选择含有能够催化还原氮的氧化物的金属或金属离子的含硼分子筛; 和b)使内燃机的废气流与分子筛接触。
    • 8. 发明授权
    • Boron-containing molecular sieve CHA
    • 含硼分子筛CHA
    • US07226575B2
    • 2007-06-05
    • US11266075
    • 2005-11-02
    • Lun-Teh YuenStacey I. Zones
    • Lun-Teh YuenStacey I. Zones
    • C01B39/12
    • C01B39/12B01J29/7015B01J29/86B01J2229/37
    • A boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof is prepared using a quaternary ammonium cation derived from 1-adamantamine, 3-quinuclidinol or 2-exo-aminonorbornane as structure directing agent. The molecular sieve can be used for gas separation or in catalysts to prepare methylamine or dimethylamine, to convert oxygenates (e.g., methanol) to light olefins, or for the reduction of oxides of nitrogen n a gas stream (e.g., automotive exhaust).
    • 具有CHA晶体结构并包含(1)氧化硅和(2)氧化硼或氧化硼和氧化铝,氧化铁,氧化钛,氧化镓及其混合物的组合的含硼分子筛是使用四 衍生自1-金刚烷胺,3-奎宁环醇或2-外 - 酰基降冰片烷的铵阳离子作为结构导向剂。 分子筛可用于气体分离或催化剂中以制备甲胺或二甲胺,将含氧化合物(如甲醇)转化为轻质烯烃,或用于还原氮气氧化物(例如汽车排气)。
    • 9. 发明授权
    • Methods to improve heteroatom lattice substitution in large and extra-large pore borosilicate zeolites
    • 改进大孔径和超大孔隙硼硅酸盐沸石中杂原子晶格取代的方法
    • US06790433B2
    • 2004-09-14
    • US10274249
    • 2002-10-18
    • Cong-Yan ChenStacey I. Zones
    • Cong-Yan ChenStacey I. Zones
    • C01B3906
    • B01J29/86C01B39/026
    • The invention, in one embodiment, is a method for preparing crystalline zeolites by (a) contacting a calcined essentially aluminum free borosilicate zeolite with an aqueous acid solution, thereby producing an at least partially deboronated zeolite; (b) contacting said at least partially deboronated zeolite with a solution selected from the group consisting of an aqueous aluminum salt solution, thereby producing an aluminosilicate zeolite; an aqueous gallium salt solution, thereby producing a gallosilicate zeolite; an aqueous iron salt solution, thereby producing a ferrosilicate zeolite; and mixtures thereof; and (c) where the contacting in step (b) occurs at a pH of not greater than about 3.5. In another embodiment, the present invention provides a method for preparing crystalline zeolites by contacting a calcined essentially aluminum free large or extra-large pore borosilicate zeolite with a solution selected from the group consisting of an aqueous aluminum salt solution, thereby producing an aluminosilicate zeolite; an aqueous gallium salt solution, thereby producing a gallosilicate zeolite; an aqueous iron salt solution, thereby producing a ferrosilicate zeolite; and mixtures thereof; and where the contacting occurs at a pH of not greater than about 3.5.
    • 在一个实施方案中,本发明是通过(a)使煅烧的基本上不含铝的硼硅酸盐沸石与酸水溶液接触来制备结晶沸石的方法,从而产生至少部分脱硼的沸石; (b)使所述至少部分脱硼的沸石与选自铝盐水溶液的溶液接触,从而制备铝硅酸盐沸石; 一种镓盐水溶液,从而生产硅酸镓沸石; 一种铁盐水溶液,从而生产一种硅酸铝沸石; 及其混合物; 和(c)步骤(b)中的接触在不大于约3.5的pH下发生。 在另一个实施方案中,本发明提供了一种制备结晶沸石的方法,该方法通过将煅烧的基本上不含铝的大或超大孔硼硅酸盐沸石与选自铝盐水溶液的溶液接触,由此生产硅铝酸盐沸石; 一种镓盐水溶液,从而生产硅酸镓沸石; 一种铁盐水溶液,从而生产一种硅酸铝沸石; 及其混合物; 并且其中接触在不大于约3.5的pH下进行。