Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 97-99-4, Name is (Tetrahydrofuran-2-yl)methanol, molecular formula is C5H10O2. In an article, author is Li, Jing-Yi,once mentioned of 97-99-4, COA of Formula: C5H10O2.
Solvent effects on diffusion channel construction of organosilica membrane with excellent CO2 separation properties
In this work, bis (triethoxysilyl) ethane (BTESE)-derived organosilica membranes were fabricated via the sol-gel method. To obtain organosilica membranes with high perm-selectivity, the network of the membrane was tailored by using different solvents in the preparation of the BTESE-derived sol with different pore sizes and network structures. A solvent with small polarity and a small dielectric constant (epsilon r) can lead to outstanding single gas separation performance on the membrane structure, because the precursors are completely hydrolyzed and effectively stacked into a dense structure, which is beneficial for forming a suitable network for gas separation. The influence of the solvent and membrane thickness on the BTESE-derived membrane were evaluated to determine the mechanism responsible for the separation; this mechanism was found to be controlled not only by molecular sieving but also by selective surface diffusion. The results show that the BTESE-derived membrane prepared using tetrahydrofuran as the solvent exhibited a small network with an optimum thickness (three coating cycles) and led to a high ideal selectivity for CO2/CH4 and CO2/N-2, with selectivity values of 33 and 38, respectively; additionally, the permeance of CO2 was 6.32 x 10(-8) mol m(-2) s(-1) Pa-1 at 25 degrees C.
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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem