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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Molecular characterization and comparison of Asphaltenes by APPI FT-ICR and Pyrolysis-GC/HRTOF MS

등록일
2016년 8월 29일 15시 57분 51초
접수번호
2125
발표코드
ANAL.P-68 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 14일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
진장미, 김성환1, 김영환*
한국기초과학지원연구원 생의학오믹스연구팀, Korea
1경북대학교 화학과, Korea
Asphaltenes are complex mixtures with polar and nonpolar compounds and have high molecular weight. Especially, there are polyaromatic hydrocarbons with containing nitrogen, oxygen and sulfur in the raw carbon residue specimens. It is important to demonstrate molecular level characterization of asphaltenes because they raise problems in petroleum industry by their undesirable properties such as uncontrolled precipitation and aggregation. In this study, the molecular characterization of asphaltene has been investigated by APPI FT-ICR MS. The overall distribution of chemical classes was determined. As a result, it was observed that Sx, O1S1, O1 and HC class species were abundant. Also, the double bond equivalents (DBE) versus carbon number plots were shown for detailed information. The raw carbon residue specimens were analyzed by Py-GC/HRTOF MS in order to identify their thermally decomposed constituents. Asphaltenes were thermally desorbed at 500℃ followed by another run at 800℃ without sample handling such as dissolution or filtration. The products of pyrolysis were also characterized by chemical class distribution and DBE versus carbon number plots for main class species.

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