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    • 8. 发明公开
    • IMPROVED CATALYST STABILITY AND CORROSION PREVENTION IN ACETIC ACID PRODUCTION PROCESS
    • 乙酸生产过程中催化剂稳定性和腐蚀预防的改进
    • EP3197855A1
    • 2017-08-02
    • EP15771474.2
    • 2015-09-21
    • LyondellBasell Acetyls, LLC
    • HALLINAN, Noel, C.SALISBURY, Brian, A.WHITE, Daniel, F.RAMAGE, David, L.FERN, Jared, T.
    • C07C51/12C07C53/08
    • C07C51/12B01J27/20C07C53/08
    • Processes for producing acetic acid herein generally include contacting methanol and carbon monoxide in the presence of a reaction medium under carbonylation conditions sufficient to form acetic acid, the reaction medium including a carbonylation catalyst selected from rhodium catalysts, iridium catalysts and palladium catalysts; from 1 wt. % to 14 wt. % water; and a plurality of additives, in-situ generated derivatives of the plurality of additives or combinations thereof; the plurality of additives including a first additive including one or more phosphine oxides and a second additive selected from heteropolyacids, metal salts and combinations thereof, the heteropolyacids represented by the formula HnM12XO40, wherein H is hydrogen, M is selected from tungsten and molybdenum, X is selected from phosphorous and silicon and O is oxygen and n is 3 or 4, the metal salts are selected from transition metal salts, lanthanide metal salts and combinations thereof; and recovering acetic acid from the process.
    • 本文制备乙酸的方法通常包括在足以形成乙酸的羰基化条件下,在反应介质存在下使甲醇和一氧化碳接触,反应介质包括选自铑催化剂,铱催化剂和钯催化剂的羰基化催化剂; 从1wt。 %至14wt。 % 水; 和多种添加剂,所述多种添加剂或其组合的原位产生的衍生物; 所述多种添加剂包括含有一种或多种氧化膦和选自杂多酸,金属盐及其组合的第一添加剂的第一添加剂,由式HnM12XO40表示的杂多酸,其中H是氢,M选自钨和钼,X 选自磷和硅,O为氧且n为3或4,所述金属盐选自过渡金属盐,镧系金属盐及其组合; 并从该过程中回收乙酸。