본문 바로가기 주메뉴 바로가기
22대 대한민국 국회 국회정보길라잡이 국회의원검색
회원가입 로그인
HOME

정보검색

소장정보 검색

국회도서관 홈으로 정보검색 소장정보 검색
결과 내 검색 동의어 포함
결과 내 검색 동의어 포함

-

목차보기

Title Page

ABSTRACT

Contents

1. INTRODUCTION 12

2. BACKGROUND 13

2.1. Typical technologies of CO₂ capture 13

2.2. Regenerable adsorbents 14

2.2.1. Regenerable Physical Adsorbents 15

2.2.2. Regenerable Chemical Adsorbents 18

3. EXPERIMENTS 23

3.1. Materials 23

3.2. Method 24

3.2.1. Synthesis of porous PMMA 24

3.2.2. Amine Impregnation 27

3.2.3. Characteristics of supports 28

3.3. Adsorption and Desorption energy 28

4. RESULTS AND DISCUSSION 30

4.1. Characterization of porous PMMA adsorbent 30

4.2. CO₂ adsorption dynamics and capacity of amine-modified PMMA supports 40

4.2.1. Screening test for operating temperature 40

4.2.2. CO₂ adsorption dynamics and capacity 44

4.3. Amine efficiency and desorption energy 51

5. CONCLUSIONS 56

REFERENCES 58

List of Tables

Table 1. Structure property of the unmodified and amine-modified PMMA supports 35

Table 2. The fitting parameters of the equilibrium adsorption capacity qₑ and the rate constant k by eq. (2). 48

Table 3. Adsorption and desorption characteristics of TEPA-modified adsorbents by TPD. Desorption peak temperature was calculated with... 54

List of Figures

Figure 1. Reactor design for porous polymer support fabrication 26

Figure 2. FT-IR of four acrylic resins (HP-2MG, T-0, T-50 and T-100): (a) HP-2MG, (b) T-0, (c) T-50, (d) T-100 36

Figure 3. Surface morphology of four PMMA supports: (a) HP-2MG, (b) T-0, (c)T-50, (d) T-100 37

Figure 4. Nitrogen adsorption and desorption isotherm of HP-2MG, T-0, T-50 and T-100 38

Figure 5. Pore distribution curves of amine-modified adsorbent with different amine loading: (a) HP-2MG, (b) T-0, (c) T-50, (d) T-100 supports and... 39

Figure 6. Breakthrough curves of CO₂ for supported amine sorbents(HP-2MG/(40)T) at different temperature over time (99.999 vol.% CO₂) 42

Figure 7. Relationship between the pore structure of substrate and CO₂ capture capacity at different temperature 43

Figure 8. Breakthrough curves of CO₂ for supported amine sorbents with different pore structure over time (99.999 vol% CO₂, 35 ℃) 49

Figure 9. Breakthrough curves of CO₂ for supported amine sorbents with different amine loading over time (99.999 vol% CO₂, 35 ℃) 50

Figure 10. Effect of different TEPA loading on the CO₂ sorption capacity and amine efficiency 55

초록보기

 PMMA supports and amine additives were investigated to adsorb CO₂. The materials such as zeolite and silica have been researched for capturing CO₂. However, although polymer support had advantages which are low cost, durability and controllable, it have not been. PMMA supports which are easy to control the structure relatively were fabricated using different ratio of pore forming agents (porogen) to control the specific surface area(BET), pore volume and distribution. Toluene and xylene were used for porogens. Supported amine sorbents were prepared by wet impregnation of tetraethylenepentamine (TEPA) with different concentration on PMMA supports. Therefore, the effect of the pore structure of supports and the quantity of impregnated TEPA on the adsorption capacity, dynamics and desorption energy could be identified by using BET analysis, TGA and TPD. The increased amount of toluene as pore foaming agent resulted in the decreased average pore diameter and the increased BET surface area. After impregnation, the support with micropore structure was supposed the pore blocking and filling effect so that it had low CO₂ capacity and kinetics due to the difficulty of diffusing. Macropore structure indicated fast adsorption capacity and low influence of amine loading. In case of support with mesopore, it had high performance of adsorption capacity and kinetics. Therefore, high surface area and meso-/macro- pore structure was suitable for CO₂ capture.

추천서가 (다양한 추천 자료를 만나보세요)

권호기사보기

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 기사목차