In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Humins with Efficient Electromagnetic Wave Absorption: A By-Product of Furfural Conversion to Isopropyl Levulinate via a Tandem Catalytic Reaction in One-Pot, published in 2021-09-01, which mentions a compound: 591-12-8, mainly applied to humin electromagnetic wave absorption furfural isopropyl levulinate tandem catalysis; biomass conversion; by-product; catalysis; electromagnetic wave absorption; nano-porous carbon, Formula: C5H6O2.
Both one-pot catalytic conversion of furfural (FAL) to iso-Pr levulinate (PL) and carbonization of byproduct (humins) for electromagnetic wave absorption are discussed, which provides inspiration that humins can be applied to electromagnetic wave absorption. In the former, phosphotungstic acid (PW) is employed as a homogeneous catalyst to convert FAL to PL via a tandem reaction in one pot, with the formation of a vast amount of humins. With FAL and various intermediates as substrates, it was found that humins was a polymerization product of FAL, furfuryl alc. (FOL) and furfuryl ester (FE) with furan rings. In addition, the in situ attenuated total reflection IR (ATR-IR) spectra also provided a basis for the proposed reaction route. In the latter, with the humins as raw material, P species and WO3 doped nano-porous carbon (Humins-700) platform formed after high-temperature annealing is used for electromagnetic wave absorption and manifests desirable absorption performance. The min. reflection loss (RLmin) value is -47.3 dB at 13.0 GHz with a thickness of 2.0 mm and the effective absorption bandwidth reaches 4.5 GHz (11.2-5.7 GHz).
If you want to learn more about this compound(5-Methylfuran-2(3H)-one)Formula: C5H6O2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(591-12-8).
Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia