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    • 1. 发明授权
    • High surface area ruthenium bonding supports on monolithic ceramics
    • 高整体陶瓷表面积钌键合支持
    • US3990998A
    • 1976-11-09
    • US583508
    • 1975-06-03
    • John P. DeLucaGary B. McVickerLawrence L. Murrell
    • John P. DeLucaGary B. McVickerLawrence L. Murrell
    • B01D53/94B01J21/00B01J23/46B01J37/02
    • B01J21/005B01D53/9413B01J23/462B01J37/024B01D2255/1026B01D2255/2047B01D2255/405B01D2255/9027B01D2255/9207
    • The instant invention relates to high surface area multilayered oxide supports coated with ruthenium of the type Ru-MgO-MgAl.sub.2 O.sub.4 -MgAl.sub.2 O.sub.4 +Mg.sub.2 SiO.sub.4 -Core. The system comprises ruthenium on a critical amount of free MgO, i.e., at least 2 wt. % minimum, on pre-reacted Al.sub.2 O.sub.3 which itself is on a monolithic ceramic substrate. This combination demonstrates the desirable, and previously unachievable characteristic of resistance to ruthenium volatilization and agglomeration, coupled with high catalytic activity. The high surface area oxides (MgO+Al.sub.2 O.sub.3) are strongly bonded to and reacted with the monolithic core substructure so as to possess physical strength. Ruthenium catalyst systems prepared utilizing the supported support (multilayered mixed oxides) method disclosed by the instant invention are useful for the treatment of waste gases, particularly exhaust gases from internal combustion engines and stationary sources and the removal of oxides of nitrogen therefrom.
    • 本发明涉及涂覆有Ru-MgO-MgAl2O4-MgAl2O4 + Mg2SiO4型芯的钌的高表面积多层氧化物载体。 该系统包含临界量的游离MgO的钌,即至少2wt。 对本身在单片陶瓷基板上的预反应的Al 2 O 3的最小值。 这种组合证明了对钌挥发和附聚的耐受性以及先前难以达到的特性,加上高催化活性。 高表面积氧化物(MgO + Al2O3)与整体式核心子结构牢固地结合并与其反应以具有物理强度。 使用本发明公开的支撑载体(多层混合氧化物)制备的钌催化剂体系可用于处理废气,特别是来自内燃机和固定源的废气以及从其中除去氮氧化物。
    • 3. 发明授权
    • Process for preparing ultra-stable, high surface area alpha-alumina
    • 制备超稳定,高表面积ALPHA-ALUMINA的方法
    • US4169883A
    • 1979-10-02
    • US927827
    • 1978-07-25
    • Lawrence L. MurrellDane C. GrenobleJohn P. DeLuca
    • Lawrence L. MurrellDane C. GrenobleJohn P. DeLuca
    • B01J21/04B01J37/00C01F7/02
    • C01F7/021B01J21/04B01J37/0018C01P2006/12C01P2006/13
    • The preparation of an ultra-stable, high surface area alpha-alumina catalyst and catalyst support suitable for use in high temperature processes such as petroleum refining processes, e.g., resid cat cracking and steam reforming, is disclosed. The process comprises impregnating high surface area gamma-alumina having narrow pores with a carbonaceous material that readily chars to form carbon. The impregnated alumina is then heated to a temperature sufficient to induce charring, following which the gamma-alumina is converted to alpha-alumina by further heating. The carbon is subsequently removed by oxidation. The alpha-alumina thus produced can withstand temperatures up to at least about 1000.degree. C. in the presence of steam without substantial loss of surface area.
    • 在从γ-氧化铝制备稳定的高表面α-氧化铝的方法中,用可碳化碳质材料如糖浸渍具有平均尺寸在20至100范围内的孔的γ-氧化铝。 将浸渍的γ-氧化铝在非氧化条件下加热以将碳质材料转化为碳。 然后将所得含碳γ-氧化铝在非氧化条件下进一步加热以将γ-氧化铝转化为α-氧化铝,最后将含碳的α-氧化铝在氧化气氛中加热以通过氧化除去碳。 该产品是具有相对较高表面积的α-氧化铝,并且在蒸汽存在下可承受至少1000℃的温度,而不会显着损失面积。 α-氧化铝产品可用作例如催化剂或催化剂载体。 石油炼制工艺。
    • 6. 发明授权
    • Supported metal interaction catalysts
    • 负载金属相互作用催化
    • US4149998A
    • 1979-04-17
    • US771396
    • 1977-02-23
    • Samuel J. TausterLawrence L. MurrellShun C. Fung
    • Samuel J. TausterLawrence L. MurrellShun C. Fung
    • B01J23/40B01J23/58B01J23/648B01J23/74B01J23/78B01J23/84B01J23/847B01J23/64
    • B01J23/648B01J23/40B01J23/58B01J23/74B01J23/78B01J23/84B01J23/847
    • This invention relates to a class of heterogeneous catalysts. More particularly, it pertains to catalysts consisting of group VIII metals dispersed on oxide carriers selected from the group consisting of Ti, V, Nb and Ta and mixtures thereof, and zirconium titanate and BaTiO.sub.3, it having been discovered that these oxide carriers are capable of exerting remarkable effects on the properties of the Group VIII metals so dispersed. Among the strong effects on the properties of supported Group VIII metals which these carriers have been observed to bring about are the suppression of the capacity of the Group VIII metals to chemisorb hydrogen at room temperature, the suppression of the capacity of the Group VIII metals to chemisorb carbon monoxide at room temperature and profound alterations in the activity and/or selectivity of various Group VIII metals in reactions such as the dehydrocyclization of n-heptane and the hydrogenolysis of ethane.These catalyst compositions which exhibit suppression of H.sub.2 and CO chemisorption are prepared by methods known in the art, but differ from the prior art methods in that reduction in a hydrogen or other reducing gas atmosphere at a temperature sufficient to result in a catalyst possessing the desired characteristics is a necessary step.
    • 本发明涉及一类非均相催化剂。 更具体地说,它涉及由分散在选自Ti,V,Nb和Ta的氧化物载体上的Ⅷ族金属及其混合物以及钛酸锆和BaTiO 3组成的催化剂,已经发现这些氧化物载体能够 对分散的第Ⅷ族金属的性能产生显着的影响。 对这些载体被观察到的支持的VIII族金属的性质的强烈影响是抑制第VIII族金属在室温下化学吸附氢的能力,抑制第VIII族金属的容量 在室温下化学吸附一氧化碳,并且在诸如正庚烷的脱氢环化和乙烷的氢解反应的反应中,各种第Ⅷ族金属的活性和/或选择性的深刻改变。
    • 10. 发明授权
    • Method for making molecular sieves and novel molecular sieve compositions
    • 制备分子筛和新型分子筛组合物的方法
    • US6004527A
    • 1999-12-21
    • US939271
    • 1997-09-29
    • Lawrence L. MurrellRudolf A. OverbeekYun-feng ChangNelleke Van der PuilChuen Y. Yeh
    • Lawrence L. MurrellRudolf A. OverbeekYun-feng ChangNelleke Van der PuilChuen Y. Yeh
    • C01B37/00C01B37/02C01B39/00C01B39/24C01B39/38C01B39/46C01B39/02C01B39/20
    • B01J29/035B01J29/084B01J29/40B01J29/7007C01B37/00C01B37/02C01B39/00C01B39/24C01B39/38C01B39/46B01J2229/60B01J2229/64Y10S423/21Y10S423/22Y10S423/27Y10S423/30
    • This invention relates to the synthesis of large pore composite molecular sieves and to the synthetic large pore composite molecular sieves so produced. The molecular sieves of the invention have the same general utilties of the comparable molecular sieves of the prior art but have been found to be superior catalysts and absorbents. This invention relates to a hydrothermal synthesis of large pore molecular sieves from nutrients, at least one of which contains an amorphous framework-structure, and which framework-structure is essentially retained in the synthetic molecular sieve. This invention stems from a discovery that the intrinsic porosity characteristics of a nutrient that possesses an amorphous cation oxide-framework can be substantially retained in the final molecular sieve containing product formed by a hydrothermal process by carefully controlling the conditions under which the hydrothermal process is conducted. For example, the invention contemplates retention of the particle size in a final molecular sieve-containing product that corresponds with that of an amorphous cation oxide-framework nutrient used in its manufacture. This invention drives the selection of process conditions to achieve one or more of macro and meso porosity ("large pore composite porosity") in the final molecular sieve product as a direct product of the hydrothermal reaction producing the molecular sieve. The invention allows the production of a molecular sieve that is in situ incorporated in the framework morphology of a solid cation oxide-framework used in the molecular sieve's manufacture.
    • 本发明涉及大孔复合分子筛的合成以及如此生产的合成大孔复合分子筛。 本发明的分子筛具有与现有技术相当的分子筛相同的一般用途,但已被发现是优异的催化剂和吸收剂。 本发明涉及从营养物质中大量分子筛的水热合成,其中至少一种含有无定形骨架结构,其中骨架结构基本上保留在合成分子筛中。 本发明源自一个发现,即通过仔细控制进行水热处理的条件,具有无定形阳离子氧化物 - 框架的营养物质的固有孔隙特性可以基本上保留在通过水热法形成的含最终分子筛的产品中 。 例如,本发明考虑到在与其制造中使用的无定形阳离子氧化物 - 骨架营养物相当的最终的含分子筛的产品中保留粒度。 本发明驱动工艺条件的选择,以实现最终分子筛产物中作为产生分子筛的水热反应的直接产物的宏观和中孔多孔性(“大孔复合孔隙率”)中的一种或多种。 本发明允许生产分子筛,其原位掺入分子筛制造中使用的固体阳离子氧化物框架的骨架形态。