Department of Industrial Chemistry, Iranian research Organization for Science and Technology, Tehran, Iran; Institute of Organic Chemistry, Albert-Ludwigs-Universität Freiburg, Freiburg i. Bg., Germany.
Department of Industrial Chemistry, Iranian research Organization for Science and Technology, Tehran, Iran.
Mater Sci Eng C Mater Biol Appl. 2019 Oct;103:109814. doi: 10.1016/j.msec.2019.109814. Epub 2019 May 30.
A mixed nano-metal oxides of Cu-Ni-Co has been synthesized. Several characterization techniques (EDS, XRD, TEM, and SEM) have been used to provide insight into the nature and structure of the catalyst. The size of this mixed metal oxide is 22 nm. The SEM images indicate that the sample with spherical particles, of which spherical assembly is comprised of elongated rod/needle-like subunits pointing radially outward, creates a needle ball-like structure. To efficiently catalyze the selective oxidation of sulfide towards sulfoxide, this heterogeneous catalyst uses an oxidizing agent (hydrogen peroxide- HO) and a solvent (acetonitrile) in mild conditions. The influence of reaction temperature and sulfide/oxidant molar ratio was evaluated with respect to sulfide conversion and chemoselectivity towards the sulfoxide product. Under optimized conditions, product yields in the range from 70 to 97% were obtained.
已经合成了一种混合纳米金属氧化物 Cu-Ni-Co。使用了几种表征技术（EDS、XRD、TEM 和 SEM）来深入了解催化剂的性质和结构。这种混合金属氧化物的尺寸为 22nm。SEM 图像表明，具有球形颗粒的样品，其球形组装体由指向径向向外的拉长的棒/针状亚基组成，形成针球状结构。为了有效地催化硫化物向亚砜的选择性氧化，这种多相催化剂在温和条件下使用氧化剂（过氧化氢-HO）和溶剂（乙腈）。考察了反应温度和硫化物/氧化剂摩尔比对硫化物转化率和亚砜产物的化学选择性的影响。在优化条件下，获得了 70%至 97%范围内的产物收率。
