Chemical and Physical Absorption of SO2 by N-Functionalized Imidazoles: Experimental Results and Molecular-level Insight

摘要: Sulfur dioxide (SO2) removal is a key component of many industrial processes, especially coal-fired power generation. Controlling SO2 emissions vital to maintaining environmental quality, as contributor acid rain, but has value chemical feedstock. Although number novel solvents/materials including ionic liquids (ILs) have recently been proposed for alternatives limestone scrubbing capture/removal from point sources, the imidazole architecture presents convenient, inexpensive and efficient class low volatility viscosity solvents accomplish this goal. On basis our prior work with imidazoles CO2 capture, we extended interests toward understanding relationship between structure absorption. Using series compounds various substituents at 1, 2 and/or 4(5) positions five-membered ring, absorption via both physical mechanisms was observed. The product ...