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    • 1. 发明申请
    • Process for producing catalyst for methacrylic acid production
    • 生产甲基丙烯酸催化剂的方法
    • US20070010394A1
    • 2007-01-11
    • US10558501
    • 2004-05-27
    • Sudo AtsushiYoshimasa SeoTatsuhiko Kurakami
    • Sudo AtsushiYoshimasa SeoTatsuhiko Kurakami
    • B01J27/24
    • C07C51/235B01J23/002B01J27/199B01J37/0219B01J37/0236B01J2523/00C07C51/252C07C51/377C07C57/04B01J2523/15B01J2523/50B01J2523/51B01J2523/53B01J2523/55B01J2523/68B01J2523/17
    • The object of the present invention is to provide a method for preparing a catalyst for producing methacrylic acid by subjecting methacrolein, isobutyl aldehyde or isobutyric acid to gas phase catalytic oxidation with high yield and high selectivity. A method for preparing a catalyst for producing methacrylic acid by subjecting methacrolein, isobutyl aldehyde or isobutyric acid to gas phase catalytic oxidation, the method comprising: (a) a step of blending compounds each containing any one of Mo, V, P, Cu, Cs or NH4 with water to prepare an aqueous solution or dispersion of the compounds (hereinafter referred to, both included, as a slurry); (b) a step of drying the slurry obtained in the step (a) to obtain a dried slurry; (c) a step of calcining the dried slurry obtained in..the step (b) to obtain a calcined body; (d) a step of filtering a mixture obtained by blending the calcined body obtained in the step (c) with water to separate an aqueous solution and water-insoluble matter; and (e) a step of drying the water-insoluble matter obtained in the step (d) to obtain a dried water-insoluble body.
    • 本发明的目的是提供一种通过以高产率和高选择性将甲基丙烯醛,异丁醛或异丁酸进行气相催化氧化来制备用于生产甲基丙烯酸的催化剂的方法。 一种通过使甲基丙烯醛,异丁醛或异丁酸进行气相催化氧化来制备甲基丙烯酸的催化剂的方法,所述方法包括:(a)将各自含有Mo,V,P,Cu, Cs或NH 4与水反应以制备化合物的水溶液或分散体(以下称为两者,均为浆料); (b)干燥步骤(a)中获得的浆料以获得干燥的浆料的步骤; (c)煅烧步骤(b)中获得的干燥浆料以获得煅烧体的步骤; (d)将通过将步骤(c)中获得的煅烧体与水混合而获得的混合物与水分离以分离水溶液和水不溶性物质的步骤; 和(e)干燥步骤(d)中获得的水不溶性物质以获得干燥的水不溶性体的步骤。
    • 10. 发明授权
    • Process for producing methacrylic acid and a catalyst
    • 生产甲基丙烯酸和催化剂的方法
    • US4925980A
    • 1990-05-15
    • US697685
    • 1985-02-01
    • Mutsumi MatsumotoYoshimasa Seo
    • Mutsumi MatsumotoYoshimasa Seo
    • B01J23/28B01J23/68B01J23/887B01J27/00B01J27/199C07B61/00C07C51/00C07C51/235C07C51/25C07C57/055C07C67/00
    • B01J23/002B01J23/28B01J23/686B01J23/8877B01J27/199C07C51/252B01J2523/00
    • The present invention relates to a process for producing methacrylic acid by oxidizing methacrolein in vapor phase with molecular oxygen or a gas containing molecular oxygen, characterized in that the oxidation is carried out in the presence of a catalyst having a composition shown by the following formula:Mo.sub.a V.sub.b P.sub.c X.sub.d Y.sub.e O.sub.fwherein Mo, V, P and O respectively represent molybdenum, vanadium, phosphorus and oxygen; X represents at least one element selected from the group consisting of potassium, rubidium, cesium, and thallium; Y represents at least one element selected from the group consisting of copper, silver, tin, thorium, germanium, nickel, iron, cobalt, titanium, rhenium, chromium, cerium, antimony and magnesium; and a, b, c, d, e and f denote the atomic ratio of respective elements where, a is 10, b is a number of 6 or less than 6 excluding 0, preferably 0.5 to 3, c is a number of 0.5 to 6, preferably 0.5 to 3, d is a number of 0.5 or less than 0.5 excluding 0, preferably 0.01 to 0.3, e is a number of 5 or less than 5 exclusing 0, preferably 0.01 to 1 and f is a number determined by the valence and atomic ratio of the other elements and usually is a number of 35 to 80, and comprising heteropolyacid having the elements above-mentioned as its components and X-metal salt of the heteropolyacid both of which are present in a mixed state, and relates also to the above-mentioned catalyst.
    • 本发明涉及通过用分子氧或含有分子氧的气体在气相中氧化异丁烯醛来生产甲基丙烯酸的方法,其特征在于氧化是在具有下式所示组成的催化剂的存在下进行的: MoaVbPcXdYeOf其中Mo,V,P和O分别代表钼,钒,磷和氧; X表示选自钾,铷,铯和铊中的至少一种元素; Y表示选自铜,银,锡,钍,锗,镍,铁,钴,钛,铼,铬,铈,锑和镁中的至少一种元素; a,b,c,d,e和f表示各元素的原子比,a为10,b为6以下,6以下的数,不包括0,优选为0.5〜3,c为0.5〜 6,优选为0.5〜3,d为除0以外的0.5以下的数,优选为0.01〜0.3,e为5以下,5以下的数,不超过0,优选为0.01〜1,f为 化合价和其他元素的原子比,通常为35〜80,包含上述元素的杂多酸作为其成分,杂多酸的X金属盐都以混合状态存在,并且涉及 还涉及上述催化剂。