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    • 1. 发明授权
    • High silica content zeolite-based catalyst
    • 高二氧化硅含量的沸石基催化剂
    • US06207605B1
    • 2001-03-27
    • US08905409
    • 1997-08-04
    • Masatsugu KawaseKouji NomuraYukito NagamoriJiro Kinoshita
    • Masatsugu KawaseKouji NomuraYukito NagamoriJiro Kinoshita
    • B01J2904
    • C10G11/05B01J29/70B01J2229/16B01J2229/36C10G35/095
    • A high silica content zeolite-based catalyst for use in a reaction which uses a feedstock containing an aromatic hydrocarbon or which gives a product containing an aromatic hydrocarbon, which catalyst satisfies the following requirements (1), (2), (3) and (4): (1) the zeolite constituting a zeolite-based catalyst has an SiO2/Al2O3 molar ratio of from 20 to 200; (2) the zeolite constituting a zeolite-based catalyst has a primary particle diameter of from 0.3 to 3 &mgr;m; (3) when a zeolite-based catalyst is converted into H type, the H type zeolite-based catalyst has a ratio of the number of surface acid sites to the total number of acid sites is from 0.03 to 0.15; and (4) a zeolite-based catalyst exhibits a pyridine-desorbed amount (B) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type after being subjected to a steam treatment at an H2O partial pressure of 0.8 atm and a temperature of 650° C. for 5 hours, and a pyridine-desorbed amount (A) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type without the steam treatment, which amounts satisfy the following requirements: &agr;≦1.6 α = ( 1 B 2 - 1 A 2 ) ÷ 5 × 10 5 .
    • 用于反应中的高二氧化硅含量的沸石基催化剂,其使用含有芳族烃的原料或产生含有芳族烃的产物,该催化剂满足以下要求(1),(2),(3)和( 4):(1)构成沸石型催化剂的沸石的SiO 2 / Al 2 O 3摩尔比为20〜200; (2)构成沸石型催化剂的沸石的初级粒径为0.3〜3μm; (3)当沸石型催化剂转化为H型时,H型沸石型催化剂的表面酸性位数与酸性位置总数之比为0.03〜0.15; 和(4)沸石型催化剂在通过热脱附法在500℃〜900℃的温度下测定的吡啶解吸量(B)后,在经受蒸汽后变为H型时 在H 2 O分压为0.8atm,温度为650℃下处理5小时,并通过热解吸在500℃至900℃的温度下测定吡啶解吸量(A) 方法转换为H型无蒸汽处理,其数量满足以下要求:
    • 6. 发明授权
    • Process for preparing attrition resistant zeolitic layered catalyst composition
    • 制备耐磨沸石层状催化剂组合物的方法
    • US06710003B2
    • 2004-03-23
    • US10022024
    • 2001-12-13
    • Deng-Yang JanJames F. Mc GeheeGuy B. WoodleMasao TakayamaRaelynn M. Miller
    • Deng-Yang JanJames F. Mc GeheeGuy B. WoodleMasao TakayamaRaelynn M. Miller
    • B01J2904
    • B01J23/626B01J23/40B01J29/06B01J29/7007B01J37/0219B01J37/0242B01J37/0246Y10T428/2991Y10T428/2993
    • A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone. Such conditions are known to promote reduced byproduct formation.
    • 公开了一种分层催化剂组合物,其中通过将包含结合的沸石(例如β沸石)的外层粘合到内芯材料(例如堇青石)来制备组合物。 在催化剂制备方法中使用有机粘合剂提供了足够耐机械磨损的组合物,其可以在芳族烷基化方法(例如苯烷基化至乙苯)中商业使用。 与使用分层组合物相关的优点包括用于给定反应器负载的沸石的量的显着减少和对所需烷基化芳族产物的改进的选择性。 当层状组合物形成为具有足够高的空隙体积的形状以减少跨越烷基化催化剂床的压降时,可实现进一步的益处。 这对于涉及高回收率和因此反应区中低烷基化剂浓度的操作特别有用。 已知这种条件促进副产物形成。