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Ruthenium-containing SBA-12 catalysts for anisole hydrodeoxygenation
Catalysis Today ( IF 5.2 ) Pub Date : 2020-03-06 , DOI: 10.1016/j.cattod.2020.03.006
Agnieszka Feliczak-Guzik , Paulina Szczyglewska , Mietek Jaroniec , Izabela Nowak

Hexagonally ordered mesoporous silica SBA-12 catalysts containing various amounts of Ru (1 or 3 wt.%) were obtained by wet impregnation. These catalysts were thoroughly characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and low-temperature nitrogen adsorption/desorption (N2 ads/des). Anisole conversion was measured over catalysts at different process conditions, where the process temperature was 90−130 °C and the hydrogen pressure – 25−60 bar. Prior the experiments the process was optimized, i.e., the amount of catalyst used in the reaction and the time of reaction were adjusted. This study shows a significant effect of hydrogen pressure and process temperature on the hydrodeoxygenation of anisole, the conversion of which increased (16–100 %) with both increasing parameters. For all the catalysts studied, the highest selectivity was obtained for two main reaction products, methoxycyclohexane and 1-methoxycyclohexene. Along with increasing conversion of anisole, the selectivity to the main reaction product - methoxycyclohexane generally increased (65–96 %) reducing the amount of 1-methoxycyclohexene (0–27 %).



中文翻译:

用于苯甲醚加氢脱氧的含钌SBA-12催化剂

通过湿式浸渍获得含有各种量的Ru(1或3重量%)的六角有序介孔二氧化硅SBA-12催化剂。通过X射线衍射(XRD),透射电子显微镜(TEM)和低温氮吸附/解吸(N 2广告/广告)。在不同的工艺条件下,通过催化剂测量苯甲醚的转化率,其中工艺温度为90-130°C,氢气压力为25-60 bar。在实验之前,对过程进行了优化,即,调整了反应中所用催化剂的量和反应时间。这项研究表明,氢气压力和过程温度对苯甲醚的加氢脱氧具有显着影响,并且随着两个参数的增加,其转化率均增加了(16-100%)。对于所有研究的催化剂,对两种主要反应产物甲氧基环己烷和1-甲氧基环己烯均具有最高的选择性。随着苯甲醚转化率的提高,对主要反应产物甲氧基环己烷的选择性通常会提高(65–96%),从而减少1-甲氧基环己烯的用量(0–27%)。

更新日期:2020-03-06
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