High nitrogen content carbons: Morphological and chemical changes with synthesis temperature and application in lithium-sulfur batteries was written by Arias, Analia Natali;Villarroel-Rocha, Jhonny;Sapag, Karim;Mori, Maria Fernanda;Planes, Gabriel Angel;Tesio, Alvaro Yamil;Flexer, Victoria. And the article was included in Electrochimica Acta in 2020.Application In Synthesis of 2,5,8,11-Tetraoxadodecane This article mentions the following:
The authors present a new two-step synthesis method to prepare N-doped carbons with micro, meso and macroporosity. The authors modified the classical polycondensation of resorcinol-formaldehyde, by adding a large excess of melamine in basic medium. Materials were prepared by varying the maximum carbonization temperature in the range 600-900°, and are denoted NCC-X, where X denotes that maximum temperature NCC-X showed a high N content, ranging from 32.9% to 10.3%. SEM showed macropores in the order of 100-600 nm, with sizes decreasing with temperature, reaching a min. for NCC-800, and then increasing again. N2 adsorption-desorption isotherms showed micro and mesopores for all samples, with a maximum surface area of 505 m2 g-1 for NCC-800. CO2 adsorption isotherms showed that all NCC-X materials present ultramicropores. NCC-X were incorporated as host materials for elemental S in Li-S batteries. The increased narrow micropore volume of materials pyrolyzed at higher temperature seems to promote an initial higher cell capacity. Conversely, the much higher N content and the higher amount of N in pyridinic environments were identified as the reasons for the higher cycling stability of the cells prepared with NCC-600-7h and NCC-750. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Application In Synthesis of 2,5,8,11-Tetraoxadodecane).
2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Application In Synthesis of 2,5,8,11-Tetraoxadodecane
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem