The high development of industries leads to significant
amount
of waste hydrophobic volatile organic compounds (VOCs), and these
have caused serious environmental concerns. Because of the physical
properties of the hydrophobic VOCs, a hydrophobic absorbent is needed
in order to make the process more efficient if absorption is considered.
However, most of these absorbents have high viscosities which leads
to a low mass transfer coefficient. Thus, a cross-flow rotating packed
bed (RPB) was evaluated for the feasibility of absorbing the hydrophobic
VOCs, xylene, and toluene, by silicon oil, a model hydrophobic absorbent.
The result shows that the absorption percentage could be up to 98%
within a second contact of liquid and gas.
Av isible-light-driven radical-mediated strategy for the in situ generation of aza-ortho-quinone methides from 2-vinyl-substituted anilines and alkylr adical precursors is described. This process enables an efficient multicomponent reaction of 2-vinylanilines,h alides,a nd sulfur ylides,a nd has aw ide substrate scope and good functional group tolerance. Treatment of the cycloaddition products with ab ase leads to densely functionalized indoles in as ingle-flask operation.Aza-ortho-quinone methides (aza-o-QMs) are highly reac-Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.
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