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    • 41. 发明申请
    • A PRODUCTION METHOD OF AROMATIC CARBOXYLIC ACIDS
    • 芳香羧酸的生产方法
    • WO00066529A1
    • 2000-11-09
    • PCT/KR1999/000782
    • 1999-12-17
    • C07B61/00C07C51/265C07C63/16C07C63/24C07C63/26
    • C07C51/265Y02P20/142Y02P20/52C07C63/307C07C63/333C07C63/313C07C63/16C07C63/15C07C63/38C07C63/06C07C63/26
    • An improved production method of aromatic carboxylic acid products of significantly improved yield and quality, the method including oxidizing alkyl aromatic substrates or their partially oxidized intermediates in a catalyst system containing a conventional catalyst and, if deemed necessary, additional components such as a transition metal or lanthanide series metal, in an acetic acid medium, with a feed gas containing both oxygen and carbon dioxide. Since carbon dioxide functions as a co-oxidant along with oxygen in the oxidation reaction, the oxidation reaction proceeds more selectively to produce the carboxylic acid product much faster under milder reaction conditions as compared to the conventional oxidation. The present invention also can be utilized as an effective purification process to produce highly pure terephthalic acid or isophthalic acid by oxydation of impurities such as 4-carboxybenzaldehyde and para-toluic acid or 3-carboxybenzaldehyde and meta-toluic acid which are contaminated in crude terephthalic acid andisophthalic acid products, respectively.
    • 一种改进的产率和质量显着提高的芳族羧酸产物的生产方法,包括在含有常规催化剂的催化剂体系中氧化烷基芳族底物或其部分氧化的中间体的方法,如果需要,还可加入另外的组分如过渡金属或 镧系元素金属,在乙酸介质中,含有含氧和二氧化碳的进料气体。 由于二氧化碳在氧化反应中作为氧气与氧气一起起作用,所以与常规氧化相比,氧化反应更有选择地进行,在较温和的反应条件下更快地生成羧酸产物。 本发明还可以用作通过氧化诸如4-羧基苯甲醛和对甲苯甲酸或3-羧基苯甲醛和间甲苯甲酸等杂质的高纯度对苯二甲酸或间苯二甲酸的有效纯化方法,这些杂质被粗对苯二甲酸 酸和间苯二甲酸产物。
    • 42. 发明申请
    • METHOD FOR PRODUCING PHTHALIC ANHYDRIDE BY MEANS OF CATALYTIC VAPOR-PHASE OXIDATION OF O-XYLOL/NAPHTHALENE MIXTURES
    • PROCESS FOR通过邻二甲苯/萘混合物的气相催化氧化反应生产邻苯二甲酸酐
    • WO99061434A1
    • 1999-12-02
    • PCT/EP1999/003192
    • 1999-05-10
    • C07D307/89C07C51/265C07C51/31C07C63/16
    • C07C51/265C07C51/313C07C63/16
    • The invention relates to a method for producing phthalic anhydride by means of catalytic vapor-phase oxidation of o-xylol/naphthalene mixtures with molecular oxygen while using a catalyst (I) situated in a first layer on the gas entry side, said layer amounting to 25 to 75 percentage by volume of the total catalyst volume, containing, each time with regard to the catalytically effective mass, 1 to 10 wt.% vanadium oxide (calculated as V2O5), 1 to 10 wt.% antimony oxide (calculated as Sb2O3) and 80 to 98 wt.% titanium dioxide of the anatase type with a BET surface of 13 to 28 m /g, and 0.05 to 1 wt.% cesium (calculated as Cs), deposited on a steatite support. In addition, the phthalic anhydride is produced by using a catalyst (II) situated in a second layer, said layer amounting to the remaining 75 to 25 percent by volume of the total catalyst volume, containing, each time with regard to the catalytically effective mass, 1 to 10 wt.% vanadium oxide (calculated as V2O5), 1 to 10 wt.% antimony oxide (calculated as Sb2O3) and 80 to 98 wt.% titanium dioxide of the anatase type with a BET surface of 13 to 28 m /g, 0.01 to 1 wt.% phosphorous oxide (calculated as P) and 0.01 to 0.2 wt.% cesium (calculated as Cs), deposited on a steatite support. The cesium content of catalyst (II) is less than 15 wt.% of the cesium content of catalyst (I), and catalyst (I) and catalyst (II) are produced without adding compounds of niobium.
    • 一种用于通过邻二甲苯/ Naphthalingemischen使用中,作为构成催化剂总体积的25〜75体积%,包含在气体入口侧的第一层的催化剂(I)的分子氧的催化气相氧化制备邻苯二甲酸酐的方法,基于所述催化剂的催化活性 质量为1〜10重量%的钒(如V 2 O 5计算),1〜10重量%的氧化锑(如三氧化二锑计算)%和80至98重量具有13至的BET表面积的锐钛型二氧化钛% 28米<2> /克和铯(作为铯计)的0.05〜1重量%施加至滑石支撑,并且在第二层的催化剂(II),它构成了总的催化剂体积的剩余的75至25%(体积) 含有上的催化活性成分,具有1至基于在每种情况下(如V 2 O 5计算)10重量%的钒,1至10重量%的氧化锑(如三氧化二锑计算)和80%至98重量%的钛氧化物 具有13的BET表面积的锐钛型28米<2> /克和0.01到1重量磷%(计算为P),和0.01〜0.2重量铯%(计算为 CS)施加到滑石的支持,其中,所述催化剂(II)的铯含量低于15重量的催化剂(I)和催化剂(I的铯含量的%)和催化剂(II)不添加制备的铌化合物的 是。
    • 44. 发明申请
    • METHOD FOR PRODUCING SHELL CATALYSTS FOR CATALYTIC GAS-PHASE OXIDATION OF AROMATIC HYDROCARBONS
    • 用于生产壳催化剂用于芳烃的气相催化氧化
    • WO98037967A1
    • 1998-09-03
    • PCT/EP1998/000778
    • 1998-02-12
    • B01J21/06B01J23/22B01J37/02C07C51/265C07C51/31C07C63/16C07C51/255
    • C07C51/265B01J21/063B01J23/22B01J37/0215B01J37/0223C07C51/313C07C63/16
    • The invention relates to a method for producing gas-phase catalysts gasphase oxidation of aromatic hydrocarbons into carboxylic acids and/or carboxylic acid anhydrides upon whose carrier material a coating containing catalytically active metal oxide is applied in the form of a shell, wherein a powder is initially produced from a solution and/or suspension of catalytically active metal oxides and the precursor compounds thereof or simply the precursor compounds in the presence or absence of auxiliary agents in order to produce the catalyst. Said powder is then applied, in the form of a shell, to the carrier in the presence or absence of auxiliary agents after or without previous conditioning and without previous thermal treatment to produce the catalyst. The carrier which is thus coated undergoes thermal treatment in order to produce catalytically active metal oxides.
    • 一种制备涂覆的催化剂的芳族烃为羧酸和/或羧酸酐的催化气相氧化方法,含有该载体材料层上的催化活性金属氧化物的以涂层形式从催化活性的金属氧化物的溶液和/或悬浮液的施加,在与它们的前体化合物或 只有这些前体化合物首先制备在存在或不存在的助剂的催化剂的生产,然后在存在或不存在的助剂的催化剂生产后或无需之前的调节支撑,无需事先的热处理以生成杯状催化活性的金属氧化物粉末 施加和热处理,以产生具有催化活性的金属氧化物的这样涂覆载体进行。
    • 45. 发明申请
    • PROCESS FOR PREPARING AROMATIC DICARBOXYLIC ACIDS
    • 制备芳族二羧酸的方法
    • WO1998018750A1
    • 1998-05-07
    • PCT/JP1997003908
    • 1997-10-28
    • MITSUI CHEMICALS, INC.ISAYAMA, ShigeruOKAMOTO, EtsuroSAKATA, ToshiyukiSUZUKI, HiroshiIWATA, Hideaki
    • MITSUI CHEMICALS, INC.
    • C07C63/16
    • C07C51/43C07C63/38C07C63/26C07C63/15
    • A process for preparing aromatic carboxylic acids which, using a simple apparatus in a simple manner without causing clogging, can efficiently conduct separation and washing of crystals and can recover a solvent and a catalyst and, in addition, can efficiently conduct solvent replacement. The process comprises: oxidizing an aromatic compound having an alkyl substituent or a partially oxidized alkyl substituent with a gas containing a molecular oxygen in a liquid phase in a catalyst-containing solvent in an oxidation reactor (1) to prepare an aromatic dicarboxylic acid; introducing a slurry containing the resultant aromatic dicarboxylic acid crystals from a slurry receiver (4) or a purification reactor (7) into a centrifuge (5a or 5b) having a filtration section in a solid carrying zone; centrifuging the slurry to separate the slurry into crystals and a liquid; and conducting filtration in the filtration section when the separated crystals move through the solid carrying zone and, at the same time, washing the crystals by bringing the same into contact with a washing liquid and discharging a waste washing liquid from the filtration section.
    • 制备芳族羧酸的方法,其使用简单的装置以简单的方式不会引起堵塞,可以有效地进行晶体的分离和洗涤,并且可以回收溶剂和催化剂,并且还可以有效地进行溶剂置换。 该方法包括:在氧化反应器(1)中,在含催化剂的溶剂中,用液相中含有分子氧的气体氧化具有烷基取代基或部分氧化的烷基取代基的芳族化合物,以制备芳族二羧酸; 将含有所得芳族二羧酸晶体的浆料从浆料接收器(4)或纯化反应器(7)引入具有在固体携带区中具有过滤部分的离心机(5a或5b)中; 将浆料离心分离成晶体和液体; 并且当分离的晶体移动穿过固体携带区时,在过滤部分中进行过滤,同时通过使晶体与洗涤液接触并从过滤部排出废液清洗液来洗涤晶体。
    • 46. 发明申请
    • LIQUID PHTHALIC ANHYDRIDE RECOVERY PROCESS
    • 液体非水溶液回收方法
    • WO1995031427A1
    • 1995-11-23
    • PCT/US1995005891
    • 1995-05-09
    • EXXON CHEMICAL PATENTS INC.
    • EXXON CHEMICAL PATENTS INC.DENGLER, Herbert, PeterBAIEL, James, Joseph
    • C07C63/16
    • C07C51/573C07C63/16
    • A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature in the range of about 130 DEG C or greater with a first stream comprising maleic anhydride and/or at least one compound selected from the group consisting of: citraconic anhydride, benzoic acid and phthalic anhydride in a rectification tower such that a substantial portion of the phthalic anhydride contained within the vapor phase oxidation product transfers from the vapor phase to a liquid phase and the by-products contained in the first stream which are more volatile than phthalic anhydride transfer from the liquid phase to the vapor phase and wherein a vapor-to-liquid weight ratio in the range between about 5 to 20 is exhibited within the rectification tower, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt.% , preferably 90-100 wt.%, without the formation of an intermediate solid phase.
    • 从气相氧化产物中回收邻苯二甲酸酐作为液体的方法,该方法包括将温度在约130℃或更高的温度的气相氧化产物与包含马来酸酐和/或至少一种化合物 选自在精馏塔中的柠康酸酐,苯甲酸和邻苯二甲酸酐,使得气相氧化产物中所含的相当大部分邻苯二甲酸酐从气相转移到液相,并含有副产物 在比从邻苯二甲酸酐从液相转移到气相的挥发性更高的第一流中,并且其中精馏塔内表现出约5-20范围内的气 - 液重量比,由此形成液相 邻苯二甲酸酐浓度在约50-100重量%,优选90-100之间的邻苯二甲酸酐产物 重量%,而不形成中​​间固相。