Institute of Materials Science , University of Connecticut , U-3136, 97 N. Eagleville Road , Storrs , Connecticut 06269 , United States.
Department of Chemistry , University of Connecticut , U-3060, 55 N. Eagleville Road , Storrs , Connecticut 06269 , United States.
Inorg Chem. 2018 Jun 18;57(12):6946-6956. doi: 10.1021/acs.inorgchem.8b00613. Epub 2018 May 29.
The controlled synthesis of mixed crystallographic phase MnO/MnO sponge material by varying heating rates and isothermal segments provides valuable information about the morphological and physical properties of the obtained sample. The well-characterized MnO/MnO sponge and applicability of difference in reactivity of H and CO desorbed during the synthesis provide new developments in the synthesis of metal oxide materials with unique morphological and surface properties. We report the preparation of a MnO/MnO sponge using a metal nitrate salt, water, and Dextran, a biopolymer consisting of glucose monomers. The MnO/MnO sponge prepared at 1 °C·min heating rate to 500 °C and held isothermally for 1 h consisted of large mesopores-macropores (25.5 nm, pore diameter) and a pore volume of 0.413 mL/g. Furthermore, the prepared MnO/MnO and 5 mol %-Fe-MnO/MnO sponges provide potential avenues in the development of solid-state catalyst materials for alcohol and amine oxidation reactions.
通过改变升温速率和恒温段来控制混合晶相 MnO/MnO 海绵材料的合成，可以提供有关所得样品形态和物理性质的有价值信息。该研究采用金属硝酸盐盐、水和葡聚糖（一种由葡萄糖单体组成的生物聚合物）制备了 MnO/MnO 海绵，该海绵具有良好的特性，并且在合成过程中 H 和 CO 解吸的反应性差异可提供具有独特形态和表面性质的金属氧化物材料的新发展。所制备的 MnO/MnO 海绵在 1°C·min 的升温速率下加热至 500°C 并恒温 1 h，其具有大的介孔-大孔（25.5nm，孔径）和 0.413mL/g 的孔体积。此外，所制备的 MnO/MnO 和 5mol%-Fe-MnO/MnO 海绵为醇和胺氧化反应的固态催化剂材料的开发提供了潜在途径。
