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Carbon Dioxide Capture and Conversion for Power to Gas
서정길 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
CO2 capture and conversion have attracted great attention for sustainable development in accordance with the global efforts to mitigate CO2 emission and its side effects. There are many technologies for removal of anthropogenic CO2 from point-sources by using physical/ chemical sorbents or membranes. However, technological advance in CO2 conversion is challenging because CO2 itself is quite stable in nature hardly being converted into other chemicals. Furthermore, CO2 storage and sequestration, the alternatives, are facing with many social and safety issues. Therefore, it is urgently required to find new way of handling CO2. In this regards, Power-to-Gas is promising option to meet both economical and environmental issues on CO2. In this talk, the recent progress on CO2 capture technology which can be integrated with exisitng CO2 conversion technology that utilize H2 from water electrolyzer powered by renewable electricity will be discussed in detail.
서정길 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
In this work, self-condensation reaction of 2-methylfuran and its cross-condensation reactions with furfural and its hydrogenation products (2-pentanone, n-butanal, gamma-Valeractone, angelica lactone, levulinic acid, and furan) have been implemented to produce high carbon (C14-C16) transport fuel precursors. Sulfonic acid catalysts with and without alkyl chain linkers and sulfonic acid functionalized ionic liquids supported on fibrous nano-silica (KCC-1) were synthesized and investigated for these reactions. The activity and selectivity of the synthesized catalysts with respect to acidic amount, acidic strength, hydrophobicity, and surface properties were investigated. Among the synthesized catalyst, sulfonic acid-functionalized KCC-1 based catalysts showed higher conversion and selectivity due to its easy accesible acidic active site with appropriate acid strengh and hydrophobicity. The catalysts were recyclable for more than four cycles.
서정길,고혜진,Ho Sung Moon,Min Jeong Lee,홍용기,정현도,남보혜,Tae Hyun Park,박남규 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.1
Apidaecin Ib had strong antimicrobial activity against several tested Gram-negative bacteria including Escherichia coli, Enterobacter cloacae, and Shigella flexneri (MECs; 0.3-1.5 μg/mL), but showed no activity against all the tested Gram-positive bacteria including Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus and one yeast, Candida albicans (MECs; >125 μg/mL). Interestingly, this peptide showed potent antibacterial activity only against Edwardsiella species (MECs; 0.6-3.6 μg/mL) among the tested fish pathogenic bacteria through a bacteriostatic process and showed no significant hemolytic activity. Apidaecin Ib took an unordered structure in all environments and also had very weak membrane perturbation activity even at 25 μM. Anti-Edwardsiella activity of apidaecin Ib is stronger than those of other antimicrobial polypeptides or antibiotics, but its activity is salt-sensitive. These results suggest that apidaecin Ib has Edwardsiella speciesspecific antibacterial activity and could be applied as new preventive or control additives for Edwardsiella species infection in freshwater fish aquaculture.