Manganese-based oxidation catalyst
    71.
    发明申请
    Manganese-based oxidation catalyst 有权
    锰系氧化催化剂

    公开(公告)号:US20050147550A1

    公开(公告)日:2005-07-07

    申请号:US10752260

    申请日:2004-01-06

    Abstract: A catalyst for the oxidation of volatile organic compounds and carbon monoxide comprising manganese and alumina, such catalyst having been impregnated with a phosphorus compound. The presence of the phosphorus compound results in a significant oxidative conversion of both the volatile organic compounds and the carbon monoxide. The catalyst is especially useful for treating gaseous streams that emanate from industrial sources, such as wood pulp manufacturing plants. The manganese portion of the catalyst is preferably comprised of manganese compounds comprising a defect non-stoichiometric manganese oxide of the type β-Mn3O4+x, wherein x has the value of 0.1≦x≦0.25 in respect to about 80 to about 95% of all manganese atoms, and manganese aluminate in respect to the balance of the manganese atoms. The alumina portion of the catalyst is preferably comprised of high temperature forms of alumina of the type comprising α-Al2O3 and (α+δ+θ)-Al2O3.

    Abstract translation: 用于氧化包含锰和氧化铝的挥发性有机化合物和一氧化碳的催化剂,这种催化剂已经用磷化合物浸渍。 磷化合物的存在导致挥发性有机化合物和一氧化碳的显着氧化转化。 催化剂特别适用于处理从工业来源产生的气流,如木浆制造厂。 催化剂的锰部分优选包含锰化合物,其包含类型为β-Mn 3 O 4 + x N的缺陷非化学计量的氧化锰,其中x具有 相对于锰原子的平衡,相对于约80至约95%的所有锰原子,0.1 <= x <= 0.25的值和铝酸锰。 催化剂的氧化铝部分优选由包含α-Al 2 O 3 3和(α+δ+θ)3 Al 3+的类型的高温形式的氧化铝组成, SUB> 2 3。

    Methods for enhancing the acid sites of FCC catalysts
    72.
    发明授权
    Methods for enhancing the acid sites of FCC catalysts 失效
    提高FCC催化剂酸性位点的方法

    公开(公告)号:US06046125A

    公开(公告)日:2000-04-04

    申请号:US55690

    申请日:1998-04-06

    Inventor: Stephen K. Pavel

    CPC classification number: B01J38/48 B01J37/28 B01J38/60 B01J38/66

    Abstract: The present invention discloses aqueous methods for enhancing the acid sites of fluid catalytic cracking (FCC) catalysts. The methods comprise the steps of contacting an FCC catalyst, either spent or fresh, with an aqueous solution comprising water, an inorganic acid substantially free of chloride and aluminum. The acid is preferably sulfurous or sulfuric acid. The aluminum is provided by an aluminum source selected from the group consisting of the alumina trihydrates and aluminum oxide. Chloride contamination of the aluminum source should be minimal, preferably less than about 1000 ppm chloride, more preferably less than about 200 ppm chloride. The pH of the aqueous solution is adjusted to about 3-12 by the addition of a sufficient quantity of ammonium hydroxide. The FCC catalyst is added to this solution, preferably with stirring, in a weight ratio of about 1 part catalyst to about 1-10 parts water to prepare an aqueous slurry. Upon stabilization of the pH of the aqueous slurry, enhancement of the acid sites of the catalyst is achieved and the catalyst may be separated from the slurry and, if desired, washed. This simple, aqueous process reduces the level of many metal poisons on the FCC catalyst and produces a catalyst having an enhanced number of acid reaction sites.

    Abstract translation: 本发明公开了用于增强流化催化裂化(FCC)催化剂的酸性位点的水性方法。 所述方法包括以下步骤:将消耗或新鲜的FCC催化剂与包含水,基本上不含氯化物和铝的无机酸的水溶液接触。 酸优选为亚硫酸或硫酸。 铝由选自三水合氧化铝和氧化铝的铝源提供。 铝源的氯化物污染应该是最小的,优选小于约1000ppm氯化物,更优选小于约200ppm氯化物。 通过加入足够量的氢氧化铵将水溶液的pH调节至约3-12。 将FCC催化剂优选在搅拌下加入到该溶液中,重量比为约1份催化剂至约1-10份水以制备含水浆料。 在稳定水性浆料的pH后,实现催化剂的酸性位置的增强,并且催化剂可以与浆料分离,并且如果需要,可以洗涤。 这种简单的含水方法降低了FCC催化剂上的许多金属毒素的水平,并产生了具有增加数量的酸反应位点的催化剂。

    Process for preparing phosphorus-vanadium-oxygen catalysts
    75.
    发明授权
    Process for preparing phosphorus-vanadium-oxygen catalysts 失效
    制备磷 - 钒 - 氧催化剂的方法

    公开(公告)号:US3977998A

    公开(公告)日:1976-08-31

    申请号:US502475

    申请日:1974-09-03

    CPC classification number: C07C51/215 B01J27/198 B01J37/28 C07C51/313

    Abstract: The performance of phosphorus-vanadium-oxygen catalysts useful for the conversion of saturated aliphatic hydrocarbons to maleic anhydride is dependent on the controlled calcination of the catalyst precursor. Phosphorus-vanadium-oxygen catalysts are prepared by mixing phosphorus and vanadium compounds to form precursors containing tetravalent vanadium, and calcining the precursors in an oxidizing atmosphere until a controlled level of pentavalent vanadium has been achieved, and then calcining the precursors in an inert atmosphere to higher temperatures to provide catalysts with the desired oxidation levels that are promptly active, so that valuable manufacturing facilities are not required to "activate the catalyst."

    Abstract translation: 用于将饱和脂肪烃转化为马来酸酐的磷钒氧催化剂的性能取决于催化剂前体的受控煅烧。 通过将磷和钒化合物混合以形成含有四价钒的前体制备磷 - 钒 - 氧催化剂,并在氧化气氛中煅烧前体,直到达到控制的五价钒水平,然后在惰性气氛中煅烧前体 更高的温度以提供催化剂具有迅速活化的所需氧化水平,使得不需要有价值的制造设备来“活化催化剂”。

    Vanadium catalysts made with a trivalent phosphorus compound
    77.
    发明授权
    Vanadium catalysts made with a trivalent phosphorus compound 失效
    用三价磷化合物制成的钒催化剂

    公开(公告)号:US3907707A

    公开(公告)日:1975-09-23

    申请号:US34232573

    申请日:1973-03-19

    Applicant: MONSANTO CO

    Abstract: An improved process was found for preparing a vanadiumcontaining catalyst wherein a tetravalent vanadium compound is provided from a pentavalent vanadium compound, comprising contacting the pentavalent vanadium compound with a trivalent phosphorus compound. The improved process is exemplified by the preparation of phosphorus-vanadium-oxygen catalysts, and particularly the preparation of phosphorus-vanadium-oxygen catalysts having a phosphorus to vanadium atom ratio of about 1:2 to about 2:1 comprising contacting a vanadium compound with a trivalent phosphorus compound, recovering a phosphorus-vanadiumoxygen precursor, and thereafter, calcining the precursor to form the catalysts. Phosphorous acid is preferred as the trivalent phosphorus compound.

    Abstract translation: 发现一种改进的制备含钒催化剂的方法,其中四价钒化合物由五价钒化合物提供,包括使五价钒化合物与三价磷化合物接触。 通过制备磷 - 钒 - 氧催化剂,特别是磷 - 钒原子比为约1:2至约2:1的磷 - 钒 - 氧催化剂的制备,改进的方法举例包括使钒化合物与 三价磷化合物,回收磷 - 钒 - 氧前体,然后煅烧前体以形成催化剂。 作为三价磷化合物,优选为亚磷酸。

    Hydrocarbon conversion catalyst comprising alumina and aluminum phosphate
    78.
    发明授权
    Hydrocarbon conversion catalyst comprising alumina and aluminum phosphate 失效
    包含氧化铝和磷酸铝的烃转化催化剂

    公开(公告)号:US3904550A

    公开(公告)日:1975-09-09

    申请号:US40804173

    申请日:1973-10-19

    Inventor: PINE LLOYD A

    Abstract: A catalyst support comprised of alumina and aluminum phosphate is prepared by the hydrolysis of an aluminum alkoxide such as aluminum sec-butoxide with an aqueous solution of phosphoric acid. The alumina-aluminum phosphate prepared in accordance with the invention is a stable material which can be readily formed for use as a support for catalysts useful in a number of hydrocarbon conversion processes. For example, the aluminaaluminum phosphate support may be impregnated with various combinations of cobalt, nickel, tungsten and molybdenum for use as a catalyst for the desulfurization and denitrogenation of both light and heavy petroleum fractions. The support material may also be combined with zeolitic materials for use in hydrocracking or catalytic cracking or combined with noble metals for use in the reforming of petroleum feedstocks.

    Abstract translation: 由氧化铝和磷酸铝组成的催化剂载体通过用磷酸水溶液水解烷醇铝如仲丁醇铝来制备。 根据本发明制备的氧化铝 - 磷酸铝是稳定的材料,其可以容易地形成用作用于多种烃转化方法的催化剂的载体。 例如,氧化铝 - 磷酸铝载体可以用钴,镍,钨和钼的各种组合浸渍,用作轻质和重质石油馏分的脱硫和脱氮催化剂。 支撑材料还可以与用于加氢裂化或催化裂化的沸石材料结合,或与用于石油原料重整的贵金属组合。

    Surface stabilized active alumina
    79.
    发明授权
    Surface stabilized active alumina 失效
    表面活性氧化铝

    公开(公告)号:US3879310A

    公开(公告)日:1975-04-22

    申请号:US34463073

    申请日:1973-03-26

    CPC classification number: B01J27/16 B01J20/08 B01J37/28 Y10S585/906

    Abstract: Surface stabilized active alumina having significantly increased thermal stability is made by incorporating 1-20%, preferably 218% by weight PO4-ion (calculated on the weight of the calcined composite) in alumina having an essentially pseudoboehmitic structure. The stabilized active alumina retains its surface area and consequently its activity for prolonged periods under high temperature exposure, for example at 900* C without material deterioration.

    Abstract translation: 具有显着增加的热稳定性的表面稳定的活性氧化铝是通过在具有基本上假伯氏体结构的氧化铝中加入1-20%,优选2-18%(重量)煅烧复合物的PO4-离子来制备的。 稳定的活性氧化铝保持其表面积,并因此在高温暴露下延长其活性,例如在900℃下没有物质劣化。

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