Method for producing cresol from phenol and methanol via gas phase alkylation
    29.
    发明授权
    Method for producing cresol from phenol and methanol via gas phase alkylation 有权
    通过气相烷基化从苯酚和甲醇生产甲酚的方法

    公开(公告)号:US09212116B2

    公开(公告)日:2015-12-15

    申请号:US14416209

    申请日:2012-07-24

    Abstract: The present invention relates to a method for producing cresol from phenol and methanol via gas phase alkylation, in which phenol and methanol are preheated and mixed with diluent gas, then the mixture continuously go through a catalyst bed comprising the catalyst for alkylation of phenol with methanol, to produce cresol by gas phase reaction at the reaction temperature of 200˜500° C. and the weight hourly space velocity of 0.5˜20 h−1. The catalyst for alkylation of phenol with methanol is obtained by modification steps and using ZSM-5 zeolite, MCM-22 zeolite or Beta zeolite as an active composition. Using phenol and methanol as feedstock, the cresol selectivity can reach to 90%, and the p-cresol selectivity can reach to 58%. The catalyst is environmental friendly and non-corrosive to the equipment with a good stability and a broad prospect in industrial application.

    Abstract translation: 本发明涉及一种通过气相烷基化从苯酚和甲醇生产甲酚的方法,其中苯酚和甲醇被预热并与稀​​释气体混合,然后将混合物连续地通过催化剂床,该催化剂床包含用甲醇烷基化苯酚的催化剂 在200〜500℃的反应温度下通过气相反应生产甲酚,重时空速为0.5〜20h-1。 用甲醇烷基化苯酚的催化剂是通过改性步骤和使用ZSM-5沸石,MCM-22沸石或β沸石作为活性组合物得到的。 使用苯酚和甲醇作为原料,甲酚选择性可以达到90%,对甲酚的选择性可以达到58%。 催化剂环保,无腐蚀性,稳定性好,工业应用前景广阔。

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