Honeycomb (HC) monolith coated with solid acids such as Mo (VI)/ZrO₂ (MZ) with different Mo loadings (2, 6 and 10%) have been prepared by wet impregnation method and characterized by NH₃ –TPD, BET surface area, PXRD, ICP-OES, SEM, TEM and EDAX techniques. These catalysts have been used as for the synthesis of O and N-acetylation reactions by the condensation of various alcohols with acetic anhydride under solvent free conditions in shorter times (20 min) at moderate temperature (70°C). Especially, 6% Mo (VI)/ZrO₂ catalysts are found to be highly acidic and also resulted in high yields of O and N acetylated products up to ~99%. This methodology offers several advantages such as excellent yields, easy procedure, mild and environmentally benign conditions. MZ catalysts are found to be economical, efficient and highly active, recyclable and reusable up to 6 reaction cycles without much loss of their activity.

中文翻译：

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Mo（VI）/ ZrO2涂覆在蜂窝状整体材料上，作为固体酸性绿色催化剂，可在无溶剂条件下对取代的醇和胺进行乙酰化

通过湿法浸渍制备了具有不同Mo含量（分别为2％，6％和10％）的Mo（VI）/ ZrO ₂（MZ）等固体酸的蜂窝状（HC）整体涂层，并以NH ₃ -TPD，BET表面为特征区域，PXRD，ICP-OES，SEM，TEM和EDAX技术。这些催化剂已用于通过在无溶剂条件下在较短的时间（20分钟）和中等温度（70°C）下各种醇与乙酸酐的缩合来合成O和N-乙酰化反应。特别是，发现6％的Mo（VI）/ ZrO ₂催化剂是高酸性的，并且还导致O和N的高产率乙酰化产品高达〜99％。这种方法具有许多优点，例如产量高，操作简便，环境温和且环境友好。发现MZ催化剂是经济的，有效的和高活性的，可循环的和可重复使用的，最多可进行6个反应循环，而不会损失太多活性。