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    • 6. 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。