Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, HPLC of Formula: C17H15NO34803-74-1, Name is 5,6-Dimethoxy-2-(pyridin-4-ylmethylene)-2,3-dihydro-1H-inden-1-one, SMILES is O=C1/C(CC2=C1C=C(OC)C(OC)=C2)=C/C3=CC=NC=C3, belongs to pyridine-derivatives compound. In a article, author is Zhu, Hongqing, introduce new discover of the category.
Molecular model construction of Danhou lignite and study on adsorption of CH4 by oxygen functional groups
In view of the frequent occurrence of gas accidents in coal mines, the mechanism of oxygen-containing functional groups (OCFGs) in Danhou lignite adsorbing gas was studied by experiment and simulation. Elemental analysis, X-ray photoelectron spectroscopy (XPS), solid-state C-13 nuclear magnetic resonance spectroscopy (C-13-NMR), and adsorption experiment of CH4 were applied to establish the macromolecular model of Danhou lignite. Then, molecular mechanics (MM) and molecular dynamics (MD) were utilized to optimize the coal macromolecular model, and the density of coal was determined via adding periodic boundary conditions. The mechanism of gas adsorption by OCFGs was studied by grand canonical Monte Carlo (GCMC) and density functional theory (DFT). The results showed that the aromatic structures mostly exist in the form of pyrenes; the structure of aliphatic carbons are mostly methylene and methine groups; the alkanes are mostly long chains; oxygen atoms are mainly in the form of hydroxyl groups and ether groups; nitrogen atoms are mainly in the form of pyridines; and the density of Danhou lignite is 1.25 g/cm(3). The isotherm adsorption curve and Langmuir adsorption curve have a good fit, a single coal molecule reaches saturation after absorbing four CH4 molecules, and the error between experiment and simulation is small. The results of DFT calculation showed that the adsorption of CH4 by OCFGs is affected by the adsorption positions and adsorption directions. Due to CH4 molecules are affected by different electrostatic forces, the adsorption capacities of OCFGs are different, and the order is carbonyl groups > ether bonds > hydroxyl groups > carboxyl groups. The results can be used for reference in the prevention and control of coal and gas outburst.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 4803-74-1. HPLC of Formula: C17H15NO3.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem