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    • 4. 发明授权
    • Acid catalyzed hydrocarbon conversion processes utilizing a catalyst
comprising a Group IVB, VB or VIB metal oxide on an inorganic
refractory oxide support
    • 在无机耐火氧化物载体上使用含有IVB族,VB族或VIB族金属氧化物的催化剂的酸催化烃转化方法
    • US4233139A
    • 1980-11-11
    • US927828
    • 1978-07-25
    • Lawrence L. MurrellChang J. KimDane C. Grenoble
    • Lawrence L. MurrellChang J. KimDane C. Grenoble
    • B01J23/20B01J23/30B01J37/10C10G11/04C10G47/12C10G49/04C10G49/18
    • C10G11/04B01J23/20B01J23/30B01J37/10C10G47/12
    • It has been discovered and forms the basis of the disclosure that various acid catalyzed hydrocarbon conversion processes such as catalytic cracking of gas oil; xylene isomerization; toluene disproportionation; dealkylation of aromatics; ethylene, butylene, isobutylene, propylene polymerization; olefin isomerization; alcohol dehydration; olefin hydration; alkylation; heavy ends cat cracking, etc. are dramatically improved insofar as percent conversion, and selectivity are concerned by the use of a catalyst selected from the group consisting of the oxides of tungsten, niobium and mixtures thereof, and tungsten or niobium oxides in combination with one or more additional metal oxides selected from the group consisting of tantalum oxide, hafnium oxide, chromium oxide, titanium oxide and zirconium oxide, supported on an inorganic refractory oxide support. These catalysts may be prepared by the methods known in the art, i.e., incipient wetness, impregnation, coprecipitation, etc. of the metal oxide precursor onto or with the supports followed by conversion into the oxide form. Before use, the metal oxide/support combination is preferably subjected to steaming at elevated temperatures either before introduction into the reactor or in situ in the process reactor. Conventional catalytic cracking catalysts are unstable at the elevated temperatures where the metal oxide/support combinations of the present invention are uniquely stable.
    • 已经发现并形成了各种酸催化烃转化过程如瓦斯油催化裂化的公开的基础; 二甲苯异构化; 甲苯歧化; 芳烃脱烷基化; 乙烯,丁烯,异丁烯,丙烯聚合; 烯烃异构化; 酒精脱水; 烯烃水合; 烷基化; 通过使用选自钨,铌及其混合物的氧化物的催化剂和钨或铌氧化物与一种或多种氧化物的组合,可以显着改善重馏分猫裂解等 或更多的另外的金属氧化物,其选自负责在无机难熔氧化物载体上的氧化钽,氧化铪,氧化铬,氧化钛和氧化锆。 这些催化剂可以通过本领域已知的方法制备,即金属氧化物前体在载体上或与载体上的初始润湿,浸渍,共沉淀等,然后转化为氧化物形式。 在使用之前,金属氧化物/载体组合物优选在引入反应器之前或在加工反应器中原位在高温下进行蒸汽蒸发。 常规的催化裂化催化剂在本发明的金属氧化物/载体组合是独特稳定的高温下是不稳定的。
    • 7. 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。