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    • 62. 发明授权
    • High efficiency extraction method for recovering oxidation catalyst
material from dimethyl terephthalate esterified oxidate residue and the
like
    • 从对苯二甲酸二甲酯酯化氧化残渣等回收氧化催化剂材料的高效提取方法
    • US4609634A
    • 1986-09-02
    • US227012
    • 1981-01-21
    • William M. King, Jr.
    • William M. King, Jr.
    • B01J23/68B01J38/68C07C67/08C07C67/48
    • B01J23/68
    • Disclosed is a highly efficient continuous method for the aqueous extraction of water-soluble oxidation catalyst material from a residue such as that generated in the production of dimethyl terephthalate from p-xylene by the molecular oxygen oxidation and methanol esterification process. In the method the desired end product is an aqueous solution of the catalyst material. The residue to be extracted is established in finely dispersed condition in part of the aqueous solution at a weight ratio of aqueous solution to residue of above about 1:1 and maintained in that condition for a length of time sufficient for maximum transfer of catalyst material from the residue to the aqueous solution to take place. The resulting dispersion then is separated in a phase separation zone into an aqueous phase and an extracted residue phase. The separated aqueous phase is withdrawn from the phase separation zone as the aqueous solution. The separated extracted residue phase is withdrawn from the phase separation zone, and part of it is admixed gently with an aqueous solvent (for example, water) and returned to the phase separation zone.
    • 公开了一种高效连续的方法,用于通过分子氧氧化和甲醇酯化方法从残留物中提取水溶性氧化催化剂材料,例如通过对二甲苯生产对苯二甲酸二甲酯产生的残留物。 在该方法中,所需的最终产物是催化剂材料的水溶液。 要提取的残余物以细分散的条件在水溶液中以水溶液与残余物的重量比高于约1:1,并在该条件下保持一段足以使催化剂材料从 残留物发生水溶液。 然后将所得分散体在相分离区中分离成水相和萃取的残余相。 分离的水相作为水溶液从相分离区取出。 将分离的萃取的残留相从相分离区取出,并将其一部分与水性溶剂(例如水)轻轻混合并返回到相分离区。
    • 65. 发明授权
    • Oxidation and ammoxidation catalyst
    • 氧化和氨氧化催化剂
    • US4415482A
    • 1983-11-15
    • US320403
    • 1981-11-12
    • Jerry R. Ebner
    • Jerry R. Ebner
    • B01J23/31B01J23/34B01J23/68B01J27/057B01J27/198B01J27/199C07B61/00C07C45/34C07C45/35C07C47/22C07C67/00C07C253/00C07C255/08B01J29/16B01J21/02B01J27/02B01J27/14
    • C07C45/35B01J23/002B01J23/31B01J23/686B01J27/0573B01J27/0576B01J27/199C07C253/26C07C45/34B01J2523/00Y02P20/52
    • Disclosed herein are catalysts useful for oxidation and ammoxidation of hydrocarbons. Such catalysts have the empirical formulaBiMo.sub.a V.sub.b Sb.sub.c M.sub.d O.sub.xwherein a is 0.5-2, b is 0.01-0.12, c is 0.01-10, d is 0-0.5 and x is selected to satisfy the valence requirements of the other elements present. In such catalysts, M is one or more elements selected from Groups I-A, II-A, III-A, V-A, VI-A, I-B, IV-B, VI-B and VII-B of the Periodic Table.Catalysts according to the invention are prepared by forming a slurry of a vanadium component, an antimony component, a hydrophilic bismuth molybdate component having the empirical formulaBiMo.sub.a O.sub.x. Y(H.sub.2 O) wherein a is 0.5-2, x is selected to satisfy the valence requirements of the bismuth and molybdenum and Y is a number such that the bound water is 5 to 40 weight percent of the total component, and optionally, the compound M and/or a support material, drying the slurry, and calcining to form the catalyst.Such catalysts are specifically useful for production of acrylonitrile from propylene, ammonia and an oxygen-containing gas.
    • 本文公开了可用于烃的氧化和氨氧化的催化剂。 这样的催化剂具有经验式BiMoaVbSbcMdOx,其中a为0.5-2,b为0.01-0.12,c为0.01-10,d为0-0.5,x选择为满足存在的其它元素的化合价要求。 在这样的催化剂中,M是选自元素周期表的I-A,II-A,III-A,V-A,VI-A,I-B,IV-B,VI-B和VII-B族中的一种或多种元素。 根据本发明的催化剂通过形成具有经验式BiMoaOx的钒组分,锑组分,亲水性钼酸铋组分的浆料来制备。 Y(H 2 O)其中a为0.5-2,选择x以满足铋和钼的化合价要求,Y为结合水为总组分的5至40重量%,并且任选地,化合物 M和/或载体材料,干燥浆料,并煅烧以形成催化剂。 这种催化剂特别适用于从丙烯,氨和含氧气体生产丙烯腈。
    • 66. 发明授权
    • Method of using a simplified low cost catalyst system
    • 使用简化的低成本催化剂体系的方法
    • US4389382A
    • 1983-06-21
    • US284763
    • 1981-07-20
    • Haren S. GandhiKaren M. Adams
    • Haren S. GandhiKaren M. Adams
    • B01D53/94B01J23/64B01J23/644B01J23/652B01J35/02B01D53/36B01J23/68
    • B01D53/945B01J23/6527Y02T10/22
    • There is disclosed a method of using an exhaust gas catalyst for treatment of exhaust gases developed by burning a hydrocarbon based fuel in an internal combustion engine. These exhaust gases contain varying amounts of unburned hydrocarbons, carbon monoxide and oxides of nitrogen depending upon the operating conditions of the internal combustion engine. This specification teaches use of an improved catalyst composition in which a support medium is provided for supporting the catalyst system, the support medium having an upstream support portion and a downstream support portion over which the exhaust gases pass in succession. The upstream support portion of the support medium has palladium deposited thereon and the downstream support portion of the support medium has tungsten deposited thereon. The catalyst system has particular utility as a three-way catalyst operating at approximately stoichiometric conditions or as a catalyst for use in conjunction with the fast burn engines or as an oxidation catalyst.
    • 公开了一种使用废气催化剂来处理通过在内燃机中燃烧烃类燃料而产生的废气的方法。 根据内燃机的运行条件,这些废气含有不同量的未燃烧的烃,一氧化碳和氮的氧化物。 本说明书教导了使用改进的催化剂组合物,其中提供支撑介质以支撑催化剂体系,所述载体介质具有上游支撑部分和下游支撑部分,排气通过该下游支撑部分连续通过。 支撑介质的上游支撑部分具有沉积在其上的钯,并且支撑介质的下游支撑部分上沉积有钨。 该催化剂体系作为在大约化学计量条件下操作的三元催化剂或作为与快速燃烧发动机结合使用的催化剂或作为氧化催化剂的特殊用途。