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    Use of phosphrous to enhance the acid sites of FCC catalysts
    85.
    发明授权
    Use of phosphrous to enhance the acid sites of FCC catalysts 失效
    使用磷增强FCC催化剂的酸性位点

    公开(公告)号：US6034017A

    公开(公告)日：2000-03-07

    申请号：US79100

    申请日：1998-05-14

    Applicant: Stephen K. Pavel

    Inventor： Stephen K. Pavel

    IPC: B01J38/48 ,  B01J23/94 ,  B01J27/16 ,  B01J37/28 ,  B01J38/60 ,  B01J38/66 ,  B01J20/34

    CPC classification number: B01J38/48 ,  B01J27/16 ,  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, and a source of both phosphorus and aluminum. Optionally the solution includes sulfurous or sulfuric acid. The phosphorus is provided by phosphoric acid, phosphorous acid or ammonium dihydrogen phosphate. 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 an aqueous ammonium solution. 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, including nickel and vanadium, 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。 所述方法包括使FCC催化剂（废弃或新鲜的）与包含水的水溶液以及磷和铝的来源接触的步骤。 任选地，溶液包括亚硫酸或硫酸。 磷由磷酸，亚磷酸或磷酸二氢铵提供。 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。 通过加入足够量的铵水溶液将水溶液的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在FCC催化剂上降低许多金属毒素（包括镍和钒）的水平，并产生具有增加数量的酸反应位点的催化剂。

    Phosphorus modified small pore molecular sieve catalysts, and their use in the production of light olefins
    86.
    发明授权
    Phosphorus modified small pore molecular sieve catalysts, and their use in the production of light olefins 失效
    磷改性小孔分子筛催化剂及其在轻质烯烃生产中的应用

    公开(公告)号：US5925586A

    公开(公告)日：1999-07-20

    申请号：US943984

    申请日：1997-10-03

    Applicant: Hsiang-ning Sun

    Inventor： Hsiang-ning Sun

    IPC: B01J29/06 ,  B01J29/85 ,  B01J31/02 ,  B01J37/28 ,  C07C1/20 ,  B01J27/16

    CPC classification number: B01J37/28 ,  B01J29/06 ,  B01J29/85 ,  C07C1/20 ,  B01J2229/12 ,  B01J2229/126 ,  C07C2529/50 ,  C07C2529/65 ,  C07C2529/70 ,  C07C2529/85 ,  Y02P20/52 ,  Y02P30/42

    Abstract: A process for the modification of a small pore molecular sieve catalyst to increase its selectivity to ethylene in the production of light olefins from oxygenated compounds, particularly methanol. The catalyst is modified with phosphorus by incorporating a phosphonitrilic oligomer with the catalyst, and then calcining the catalyst at temperature sufficient to decompose the phosphonitrilic oligomer, and deposit from about 0.001 wt. % to about 50 wt. % phosphorus on the catalyst. This modification provides a novel composition in that it increases the ethylene selectivity of the catalyst in the production of light olefins from oxygenates as contrasted with a small pore molecular sieve catalyst otherwise similar except that it has not been so treated and modified with the phosphonitrilic oligomer.

    Abstract translation: 一种改进小孔分子筛催化剂以增加其在从含氧化合物，特别是甲醇生产轻质烯烃中对乙烯的选择性的方法。 催化剂用磷掺入磷腈低聚物与催化剂进行改性，然后在足以分解膦酸低聚物的温度下煅烧催化剂，沉积约0.001wt。 ％至约50wt。 ％磷在催化剂上。 该改性提供了一种新颖的组合物，因为它与小孔分子筛催化剂相比较，它提高了从含氧化合物生产轻质烯烃中的催化剂的乙烯选择性，不同之处在于它还没有用膦腈基低聚物进行处理和改性。

    Preparation of phosphomolybdovanadate polyoxoanions
    87.
    发明授权
    Preparation of phosphomolybdovanadate polyoxoanions 失效
    磷钼钒酸盐聚氧阴离子的制备

    公开(公告)号：US5792721A

    公开(公告)日：1998-08-11

    申请号：US336622

    申请日：1994-11-09

    Applicant: John H. Grate ,  David R. Hamm ,  Robert J. Saxton

    Inventor： John H. Grate ,  David R. Hamm ,  Robert J. Saxton

    IPC: B01J27/199 ,  B01J27/18 ,  B01J37/04 ,  B01J37/28

    CPC classification number: B01J23/002 ,  B01J27/199 ,  B01J2523/00

    Abstract: The present invention provides a process for the preparation of acidic aqueous solutions consisting essentially of, phosphomolybdovanadate salts. Certain processes of the present invention dissolve in water an oxide, oxoacid, or mixtures thereof, and at least one oxoanion salt of phosphorus, molybdenum, and vanadium, wherein the sum of salt cationic charges does not exceed the sum of the phosphomolybdovanadate anionic charges in the solution. Other processes of the present invention dissolve in water a) an oxide, oxoacid, oxoanion salt, or mixtures thereof of phosphorus, molybdenum, and vanadium and b) a carbonate salt, bicarbonate salt, hydroxide salt or mixtures thereof, wherein the sum of salt cationic charges does not exceed the sum of the phosphomolybdovanadate anionic charges in the solution. The present invention also provides processes for the preparation of solid phosphomolybdovanadate salts by evaporating the so-produced aqueous solutions to recover essentially all the dissolved phosphomolybdovanadate salt in solid form.

    Abstract translation: 本发明提供了一种制备基本上由磷钼钒酸盐组成的酸性水溶液的方法。 本发明的某些方法在水中溶解氧化物，含氧酸或其混合物，以及磷，钼和钒的至少一种氧阴离子盐，其中盐阳离子电荷的总和不超过磷钼钒酸盐阴离子电荷的总和 解决方案。 本发明的其它方法溶解于水中a）氧，氧酸，氧代阴离子盐或其磷，钼和钒的混合物，和b）碳酸盐，碳酸氢盐，氢氧化物盐或其混合物，其中盐的总和 阳离子电荷不超过溶液中磷钼钒酸盐阴离子电荷的总和。 本发明还提供通过蒸发所产生的水溶液以固体形式回收所有溶解的磷钼钒酸盐的方法来制备固体磷钼钒酸盐。

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