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公开(公告)号：US4959337A
公开(公告)日：1990-09-25
申请号：US283709
申请日：1988-12-13
摘要： A wax isomerization catalyst is described which comprises a Group VIII hydrogenation metal component on fluorided alumina or material containing alumina which catalyst possesses a surface nitrogen content N/Al ratio of about 0.01 or less determined by X-ray photoelectron spectroscopy, a bulk fluorine content of between about 2 to 10 wt %, a surface fluorine content defined as the amount of fluorine in a layer extending from the outer surface to a depth of about 1/100 of an inch of less than about 3 wt % provided that the surface fluoride concentration is less than the bulk fluoride concentration and an aluminum fluoride hydroxide hydrate peak height of 60 or less determined as the relative amount of hydrate represented by a peak in the X-ray diffraction pattern at 2.theta.=5.66 .ANG. when a hydrate level of 100 corresponds to the XRD peak height exhibited by a standard material. Also described is a method for producing a slack wax isomerization catalyst said method comprising depositing a Group VIII hydrogenation metal on alumina or material containing alumina extrudate, calcining said metal loaded extrudate, fluoriding said material using an aqueous fluorine source solution having a pH of 3.5 to 4.5 to a bulk fluorine level of about 8 wt % or less followed by heating in an air oxygen containing atmosphere or inert gas from ambient to 350.degree. to 450.degree. C. within 3 hours and holding at the final temperature, if necessary, for a time sufficient to reduce the hydrate and nitrogen contents to the aforesaid levels. Alternatively the catalyst can be made using a fluorine solution of pH less than 3.5 to a bulk fluorine level of about 10 wt % or less followed by heating in air or an oxygen containing atmosphere, or inert atmosphere at about 350.degree. to 450.degree. C.
摘要翻译： 描述了一种蜡异构化催化剂，其包括在氟化氧化铝上的VIII族加氢金属组分或含有氧化铝的材料，该催化剂具有通过X射线光电子能谱测定的表面氮含量N / Al比为约0.01以下，体积氟含量 在约2至10重量％之间，表面氟含量定义为从外表面延伸至约1/100英寸的深度小于约3重量％的层中的氟的量，条件是表面氟化物浓度 小于氟化物浓度，氟化氢氢氧化物水合物峰值高度为60或更小，当水合物水平为100时，在2θ= 5.66时X射线衍射图中由峰值表示的水合物的相对量确定为对应于 到标准材料表现出的XRD峰高。 还描述了一种制备松散蜡异构化催化剂的方法，所述方法包括在氧化铝上沉积VIII族氢化金属或含有氧化铝挤出物的材料，煅烧所述负载有金属的挤出物，使用pH为3.5的含氟氟源溶液氟化所述材料， 4.5至大约8重量％或更少的体积氟水平，然后在3小时内在空气含氧气氛或惰性气体中从室温加热至350℃至450℃，并在必要时保持在最终温度 时间足以将水合物和氮含量降低到上述水平。 或者，催化剂可以使用pH小于3.5的氟溶液至约10重量％或更少的体积氟水平制备，然后在空气或含氧气氛中或在约350-450℃的惰性气氛下加热。
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2.发明授权Surface silylated zeolite catalysts, and processes for the preparation, and use of said catalysts in the production of high octane gasoline 失效表面甲硅烷基化沸石催化剂，以及所述催化剂在高辛烷值汽油生产中的制备和使用方法
公开(公告)号：US4906599A
公开(公告)日：1990-03-06
申请号：US292670
申请日：1988-12-30
CPC分类号： B01J29/061 , C10G47/16
摘要： A novel zeolite hydrocracking catalyst which contains NH.sub.4.sup.+ sites, at ambient temperatures, and surface sites constituted of a chemisorbed silica-containing species, and process for producing said catalyst. The process for preparation of the catalyst includes a series of steps: an initial step wherein an acid zeolite, or acid zeolite hydrocracking catalyst, is treated with an agent, e.g., a nitrogen-containing compound, suitably ammonia, to convert the H.sup.+ sites throughout said zeolite framework to NH.sub.4.sup.+ sites, and a subsequent post treatment of said NH.sub.4.sup.+ zeolite with an organosilane to silylate, modify and form on the surface of said zeolite a chemisorbed silica species, e.g., --O--Si(CH.sub.3).sub.3. The surface silylated catalyst is useful for the production of high octane gasoline. When employed at elevated temperatures in a hydro-cracking operation the catalyst will evolve ammonia and convert to a surface silylated H.sup.+ zeolite catalyst to produce a high octane gasoline, at low hydrogen consumption.
摘要翻译： 一种新型沸石加氢裂化催化剂，其在环境温度下含有NH4 +位点，以及由化学吸附的二氧化硅物质组成的表面位置，以及用于生产所述催化剂的方法。 制备催化剂的方法包括一系列步骤：其中将酸性沸石或酸式沸石加氢裂化催化剂用试剂例如含氮化合物（合适的氨）处理以初始化，以将H +位点全部转化 所述沸石骨架与NH4 +位点接触，随后用有机硅烷对所述NH 4 +沸石进行后处理以在所述沸石的表面上形成化学吸附的二氧化硅物质，例如-O-Si（CH 3）3。 表面甲硅烷基化催化剂可用于生产高辛烷值汽油。 当在加氢裂化操作中在升高的温度下使用时，催化剂将放出氨并转化为表面甲硅烷基化的H +沸石催化剂以在低氢消耗下产生高辛烷值汽油。
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