Vapor-phase dehydrogenation of 1-decanol to decanal over Cu/SiO2 catalyst prepared by organic additives-assisted impregnation
Vapor-phase dehydrogenation of 1-decanol to decanal over Cu/SiO2 catalyst prepared by organic additives-assisted impregnation
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DOI：
10.1016/j.apcata.2023.119079
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发表时间：
2023-02-06
影响因子：
5.5
通讯作者：
Sato，Satoshi
中科院分区：
文献类型：
--
作者：
Hosaka，Shuya;Kurniawan，Enggah;Sato，Satoshi
在有机添加剂的辅助下，通过浸渍法制备了二氧化硅负载铜（Cu/SiO2）催化剂，并将其作为1-癸醇无氧化剂气相脱氢制癸醛的高效催化剂。XRD、N2O滴定和TEM分析表明，使用有机添加剂制备的Cu/ sio2催化剂具有更好的Cu分散性和更小的粒径，比不使用有机添加剂制备的Cu催化剂具有更大的Cu表面积。在所测试的几种添加剂辅助Cu/ sio2催化剂中，12-冠-4-醚（12C4）辅助Cu/ sio2催化剂对1-癸醇脱氢制癸醛的催化性能最高。与未辅助的Cu/ sio2催化剂相比，用12C4制备的Cu催化剂具有更高的生成速率和明显更好的长期性能。脱氢活性，即癸醛的生成速率，与催化剂的铜表面积成正比。
Silica-supported copper (Cu/SiO2) catalysts were prepared by impregnation assisted with organic additives and employed as an efficient catalyst for oxidant-free vapor-phase dehydrogenation of 1-decanol to decanal. The XRD, N2O titration, and TEM analyses showed that the utilization of organic additives generated Cu/SiO2catalysts with better Cu dispersion and smaller particle sizes, which led to a significantly larger Cu surface area than the Cu catalyst prepared without organic additives. Among several additives-assisted Cu/SiO2catalysts tested, the Cu/SiO2assisted with the 12-crown-4-ether (12C4) gave the highest catalytic performance for dehydrogenation of 1-decanol to decanal. Compared to the unassisted Cu/SiO2catalyst, the Cu catalyst prepared with 12C4 had a higher formation rate with significantly better long-run performance. The dehydrogenation activity, i.e.the formation rate of decanal, was simply proportional to the copper surface area of catalysts.