Deep desulfurization of oil by extraction with ionic liquids

I&EC 59

Nanhee Ko, ophelia015@hotmail.com1, Eunsoo Huh, mirisoo626@hanmail.net1, Minserk Cheong, mcheong@khu.ac.kr1, Hoon Sik Kim, khs2004@khu.ac.kr1, and Byeong Sung Ahn2. (1) Department of Chemistry, Kyung Hee University, 1 Hoegi-dong, Dongdaemoon-gu, Seoul, South Korea, (2) Division of Environment and Process, Korea Institute of Science and Technology, 39-1 hawolgok-dong, Seongbuk-gu, 136-791, South Korea
Recently, deep desulfurization of gasoline and diesel oil has attracted much attention, due to the increasing demand of lower S-content diesel oil and gasoline, because sulfur-containing compounds are a source of SOx. Current hydrodesulfurization (HDS) process, however, has a limitation in removing S-compounds such as DBT and 4,6-dimethyl-dibenzothiophene. In this regard, extraction of S-compounds from oil by ionic liquids (ILs) could be a promising alternative to conventional HDS. Sulfur-containing compounds which are hard to remove by HDS have been successfully removed under mild condition using various imidazolium-based ionic liquids.