표제지
목차
國文要略 11
제1장 서론 13
1.1. 연구배경 및 필요성 13
1.2. 연구 목적 16
제2장 이론적 배경 17
2.1. 숯(Charcoal)의 구조 및 특성 17
2.2. 흡착의 원리와 타입(Type) 19
제3장 실험방법 23
3.1. 실험 재료 23
3.2. 실험 방법 25
제4장 실험결과 26
4.1. 고온처리된 백탄의 중량감소 26
4.2. 백탄의 열중량분석 측정 29
4.3. 고온처리된 백탄 조각의 원소분석(EA) 30
4.4. 고온처리된 백탄 조각의 비표면적 분석 32
4.5. 고온처리된 백탄 분말의 비표면적 분석 33
4.6. 고온처리된 백탄 조각의 SEM 34
4.7. 고온처리된 백탄 조각의 TEM 40
4.8. 고온처리된 백탄 조각의 XRD 분석 41
4.9. 고온처리된 백탄 조각의 Raman 분석 43
4.10. 고온처리된 백탄의 동온흡착·탈착 분석 45
제5장 결론 49
REFERENCES 50
ABSTRACT 53
Table 2.1. Classification of pores according to their width(IUPAC) 18
Table 4.1. Weight loss(wt%) of white charcoals with respect to high temperature treatment for 60 min. 27
Table 4.2. Weight loss(wt%) of white charcoals with respect to time at 1450℃. 28
Table 4.3. Element analysis of white charcoals with respect to high temperature treatment up to 1,450 °C for 60 min. 31
Table 4.4. Specific surface area(ABET) and porosity of heat treated white charcoals.[이미지참조] 32
Table 4.5. Specific surface area(ABET)and porosity of powdered white charcoals.[이미지참조] 33
Fig 2.1. Types of adsorption isotherms. 22
Fig 3.1. White charcoals, (a) As-received, (b) Small-size flakes, (C) Granular type (3.35 - 2.36mm) 23
Fig 3.2. (a) Ball mill machine used, (b) Alumina ball used in a ball mill machine. 24
Fig 3.3. Tube furnace sermo fisher scientific (STF55433BC-1) 25
Fig 4.1. TGA curve of heat treated white charcoals in air(40 - 1,52O℃, 10℃/min.) 29
Fig 4.2. SEM images of white charcoals heat treated at 1,000 ℃, 60min. 35
Fig 4.3. SEM images of white charcoals heat treated at l,100℃, 60min. 36
Fig 4.4. SEM images of white charcoals heat treated at 1,300 ℃, 60min. 37
Fig 4.5. SEM images of white charcoals heat treated at 1,450 ℃, 60min. 38
Fig 4.6. SEM images of white charcoals heat treated at 1450 ℃, 120min. 39
Fig 4.7. TEM images of white charcoals heat treated at 1,450 ℃, 120min, TEM images of graphene. 40
Fig 4.8. XRD Comparison of heat treated white charcoal and graphene. 42
Fig 4.9. Raman comparison of heat treated white charcoal and graphene. 44
Fig 4.10. Pore size distribution(PSD) of white charcoals heat treated at 1,000 ℃, 60min and 1,100 ℃, 60min. 46
Fig 4.11. Pore size distribution(PSD) of white charcoals heat treated at 1,300 ℃, 60min and 1,450 °C, 60min. 47
Fig 4.12. Pore size distribution(PSD) of white charcoals heat treated at 1450 ℃, 120mm and 1,450 °C, 120min. 48