一种银纳米颗粒分散的粉煤灰水提取物，作为一种绿色高效的介质用于苯甲醇的无氧化剂脱氢反应。

Bhuyan Bishal, Paul Arijita, Devi Meghali, Dhar Siddhartha Sankar

Department of Chemistry, National Institute of Technology, Silchar Silchar-788010 Assam India

RSC Adv. 2018 Jan 2;8(3):1313-1319. doi: 10.1039/c7ra12225j.

Herein, a green, efficient, and new catalytic system for dehydrogenative oxidation of benzyl alcohols using Ag nanoparticles (NPs) dispersed in water extract of fly ash (WEFA) has been developed. Various characterization techniques were performed to authenticate the formation of Ag@WEFA. The as-prepared Ag NPs (10-20 nm) were found to be dispersed in WEFA, as indicated by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images. With Ag@WEFA, a variety of substituted benzyl alcohols were efficiently converted to carbonyl compounds in high yields. All the reactions were deliberately carried out without using any ligand or hazardous organic solvent. This catalytic system involving WEFA is a genuinely new concept. It is, therefore, expected to attract attention from researchers working in the areas of sustainable chemistry.

在此，已开发出一种绿色、高效的新型催化体系，用于使用分散在粉煤灰水提取物（WEFA）中的银纳米颗粒（NPs）对苯甲醇进行脱氢氧化。采用了各种表征技术来验证Ag@WEFA的形成。透射电子显微镜（TEM）和扫描电子显微镜（SEM）图像表明，所制备的银纳米颗粒（10 - 20纳米）分散在WEFA中。使用Ag@WEFA，各种取代苯甲醇能够高效地高收率转化为羰基化合物。所有反应均特意在不使用任何配体或有害有机溶剂的情况下进行。这种涉及WEFA的催化体系是一个全新的概念。因此，预计会吸引可持续化学领域研究人员的关注。