Mo/ZSM-5의 외부산점 실란화가 메탄 탈수소방향족화 반응에 미치는 영향

다국어 초록 (Multilingual Abstract)

In this study, the effect of external acid site control of NiO-Mo/ZSM-5 catalysts controlled by silanation was investigated by applying them to the MDA reaction. It is expected that external acid site control of the catalyst through silanation will be effective in improving the stability of the catalysts.
When NiO-Mo/ZSM-5 catalysts were manufactured by changing the silanation time and applied to the MDA reaction, all catalysts controlled by external acid sites through silanation showed increased BTX yields compared to NiO-Mo/ZSM-5 catalysts. In particular, the BTX yield of NiO-Mo/ZSM-5_(Mo,NiO,Si) catalysts with micropore structure and appropriate acid properties increased significantly, and the stability of the catalyst was also very excellent.
When NiO-Mo/ZSM-5 molded catalysts were manufactured by changing the silanation and molding time and applied to the MDA reaction, the BTX yield decreased compared to the powder catalysts. This is presumed to be due to the decrease in BTX shape selectivity of the catalyst due to the increase in mesopores and the decrease in activity due to the decrease in acid sites due to the addition of binder. The effect of the molding time on the reaction activity was not significant, but the molded catalyst manufactured by the post-molding silanation method (B method) was less deactivated. Therefore, it is thought that additional molding recipe optimization research using the B method is necessary.

목차 (Table of Contents)

• 1. 서론 1
• 1.1. 연구 배경 및 필요성 1
• 1.2. 연구 개발 동향 4
• 1.3. 연구 목적 6
• 2. 실험 방법 및 재료 7
• 2.1. 촉매 제조 7
• 2.1.1. NiO-Mo/ZSM-5 촉매 제조 7
• 2.1.2. 실란화 8
• 2.1.3. 촉매 성형 방법 12
• 2.2. 촉매의 특성 분석 방법 13
• 2.2.1. N2-adsorption/desorption 13
• 2.2.2. NH3-temperature programmed desorption (NH3-TPD) 13
• 2.2.3. Pyridine-fourier transform infrared spectroscopy (Py-FTIR) 14
• 2.2.4. X-ray diffraction (XRD) 15
• 2.2.5. X-ray fluorescence (XRF) 15
• 2.3. 촉매의 활성 평가 방법 (Methane Dehydroaromatization) 16
• 3. 결과 및 고찰 19
• 3.1. 성형 레시피 최적화 19
• 3.1.1. 바인더의 영향 19
• 3.1.2. 성형 촉매 활성 평가 30
• 3.1.3. 공간속도(WHSV)의 영향 35
• 3.2. 촉매 실란화가 미치는 영향 39
• 3.2.1. 실란화 방법 및 실란화합물의 영향 39
• 3.2.2. 실란화 시점의 영향 64
• 3.2.3. 성형 시점의 영향 82
• 4. 결론 100
• 참고문헌