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    • 14. 发明公开
    • 메타크릴산 제조용 촉매의 제조방법
    • 生产甲基丙烯酸生产催化剂的方法
    • KR1020060015289A
    • 2006-02-16
    • KR1020057022309
    • 2004-05-27
    • 니폰 가야꾸 가부시끼가이샤
    • 스도아츠시세오요시마사구라카미타츠히코
    • B01J27/24B01J37/08B01J37/06C07C51/235
    • C07C51/235B01J23/002B01J27/199B01J37/0219B01J37/0236B01J2523/00C07C51/252C07C51/377C07C57/04B01J2523/15B01J2523/50B01J2523/51B01J2523/53B01J2523/55B01J2523/68B01J2523/17
    • A process for producing a catalyst with which methacrolein, isobutyraldehyde, or isobutyric acid can be catalytically oxidized in a vapor phase to produce methacrylic acid in high yield with high selectivity. The process, which is for producing a catalyst with which methacrolein, isobutyraldehyde, or isobutyric acid can be catalytically oxidized in a vapor phase to produce methacrylic acid, is characterized by comprising: (a) a step in which compounds each containing any of molybdenum, vanadium, phosphorus, copper, cesium, and NH4 are mixed with water to prepare an aqueous solution or aqueous dispersion (hereinafter, both are collectively referred to as a slurry) of these compounds; (b) a step in which the slurry obtained in the step (a) is dried to obtain a dried slurry; (c) a step in which the dried slurry obtained in the step (b) is burned to obtain a burning product; (d) a step in which the burning product obtained in the step (c) is mixed with water and the mixture is separated by filtration into an aqueous solution and a water-insoluble matter; and (e) a step in which the water-insoluble matter obtained in the step (d) is dried to obtain a dried water- insoluble matter.
    • 一种制备催化剂的方法,其中甲基丙烯醛,异丁醛或异丁酸可以在气相中催化氧化,以高产率高选择性生产甲基丙烯酸。 用于生产甲基丙烯醛,异丁醛或异丁酸可以在气相中催化氧化以产生甲基丙烯酸的催化剂的方法的特征在于包括:(a)一种步骤,其中各自含有钼, 将钒,磷,铜,铯和NH 4与水混合以制备这些化合物的水溶液或水分散体(以下统称为浆料) (b)将步骤(a)中获得的浆料干燥以获得干燥的浆料的步骤; (c)将步骤(b)中获得的干燥浆料燃烧以获得燃烧产物的步骤; (d)将步骤(c)中获得的燃烧产物与水混合并将混合物通过过滤分离成水溶液和水不溶性物质的步骤; 和(e)将步骤(d)中得到的水不溶性物质干燥以获得干燥的不溶于水的物质的步骤。
    • 20. 发明公开
    • 주요 부산물인 아세트알데히드로 아크릴산의 신규한 제조 방법
    • 乙醛生产丙烯酸的新方法,乙醛是主要的副产品
    • KR20180018680A
    • 2018-02-21
    • KR20187000804
    • 2016-06-10
    • C07C51/377B01J29/08B01J29/40B01J29/70B01J37/02C07C57/04
    • C07C51/377B01J29/082B01J29/084B01J29/40B01J29/60B01J29/7007B01J35/002C07C45/54Y02P20/588C07C57/04C07C47/06
    • 본발명은고체산촉매및 α,β-불포화카복실산및/또는이의에스터를촉매적으로제조하는방법에관한것이다. 일측면에서, 제올라이트촉매가사용될수 있다. 특정실시예에서, 촉매는개질되어반응의선택도및/또는전환율을개선시킬수 있다. 예를들어, 촉매반응의반응물의높은수준의전환율및 바람직한생성물에대한선택도를달성하기위해, 촉매는이온교환으로개질되어바람직한산도프로파일을달성할수 있다. 다른측면에서, α-히드록시카복실산, α-히드록시카복실산에스터, β-히드록시카복실산, β-히드록시카복실산에스터, 이들의고리형에스터 (예를들어, 락티드), 및이들의조합을포함하는다양한공급원료 (예를들어, 출발조성물)가사용될수 있다.
    • 本发明涉及一种方法,用于制备固体酸催化剂和α,β-不饱和羧酸和/或催化的酯。 在一个方面,可以使用沸石催化剂。 在某些实施方案中,可以对催化剂进行改性以改进反应的选择性和/或转化率。 例如,实现了选择性的高度催化反应和所需产物的反应产物的转化,所述催化剂通过离子交换改性可以实现期望的pH曲线。 在另一个方面中,α-羟基羧酸,α-羟基羧酸酯,β-羟基酸,β-羟基或其羧酸酯,酯型环(例如,丙交酯),和包含以下物质的组合 (E.G.Starter组合物)可以使用。