TY - GEN
T1 - Selective removal of sulfones in diesel for the low sulfur diesel production
AU - Ko, Chang Hyun
AU - Jeon, Hong Joo
AU - Yi, Kwang Bok
AU - Park, Jong Ho
AU - Ahn, Hyungwoong
AU - Kim, Gyoo Tae
AU - Kim, Jong Nam
PY - 2008
Y1 - 2008
N2 - As the regulations set by government has tightened, the upper limit of sulfur concentration in transportation fuels, such as diesel and gasoline, decreased drastically. Most of the developed countries will set the upper limit of sulfur concentration in diesel less than 10 ppmw until 2010. To meet this regulation, various types of desulfurization technologies have reported and developed. Unsupported metal sulfide catalyst, so called "Nebular", developed by Albemarle Catalyst, enabled hydrodesulfurization (HDS) process to reduce sulfur concentration down to 10 ppmw without further facility investment, in spite of its large demand for hydrogen. As an alternative technology to HDS, selective oxidation of sulfur compounds into sulfone, oxidative desulfurization (ODS), attracted much attention due to its mild reaction condition and no demand for hydrogen. For the accomplishment of clean fuel production, not only development of partial oxidation catalyst, but also separation of sulfones in diesel should be considered seriously. In this study, various types of adsorbents, such asn alumina, silica gel, activated carbons, and extracting solvents, for examples, acetonitrile, N,N-dimethyl foramide (DMF), 1-methyl-2-pyrrolidone (NMP) were used to separate dibenzothiophene-sulfone (DBT-sulfone) dissolved in model diesel and commercial diesel. In adsorptive removal, hydrophilic adsorbents, silica gel, alumina showed higher sulfone adsorption capacities than those of activated carbons. In sulfone extraction, acetonitrile showed highest separation factor among solvents used in this study.
AB - As the regulations set by government has tightened, the upper limit of sulfur concentration in transportation fuels, such as diesel and gasoline, decreased drastically. Most of the developed countries will set the upper limit of sulfur concentration in diesel less than 10 ppmw until 2010. To meet this regulation, various types of desulfurization technologies have reported and developed. Unsupported metal sulfide catalyst, so called "Nebular", developed by Albemarle Catalyst, enabled hydrodesulfurization (HDS) process to reduce sulfur concentration down to 10 ppmw without further facility investment, in spite of its large demand for hydrogen. As an alternative technology to HDS, selective oxidation of sulfur compounds into sulfone, oxidative desulfurization (ODS), attracted much attention due to its mild reaction condition and no demand for hydrogen. For the accomplishment of clean fuel production, not only development of partial oxidation catalyst, but also separation of sulfones in diesel should be considered seriously. In this study, various types of adsorbents, such asn alumina, silica gel, activated carbons, and extracting solvents, for examples, acetonitrile, N,N-dimethyl foramide (DMF), 1-methyl-2-pyrrolidone (NMP) were used to separate dibenzothiophene-sulfone (DBT-sulfone) dissolved in model diesel and commercial diesel. In adsorptive removal, hydrophilic adsorbents, silica gel, alumina showed higher sulfone adsorption capacities than those of activated carbons. In sulfone extraction, acetonitrile showed highest separation factor among solvents used in this study.
UR - http://www.scopus.com/inward/record.url?scp=77955907880&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77955907880
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -