การดูดซับคาร์บอนไดออกไซด์และไฮโดรเจนซัลไฟด์โดยใช้ฟูมซิลิกาดัดแปรด้วยเอมีน

The high porosity adsorbents, activated alumina, calcined alumina and fumed silica modified by the addition of amine solution were prepared for CO₂ and H₂S adsorption. The effect of variables, support type, amine type (polyethyleneimine (Mw. 800), aminoethyl ethanolamine, N-(3-trimethoxysilypropyl)...

وصف كامل

محفوظ في:
التفاصيل البيبلوغرافية
المؤلف الرئيسي: ทิพยรัตน์ วงษ์สง่า
مؤلفون آخرون: ภัทรพรรณ ประศาสน์สารกิจ
التنسيق: Theses and Dissertations
اللغة:Thai
منشور في: จุฬาลงกรณ์มหาวิทยาลัย 2013
الموضوعات:
الوصول للمادة أونلاين:https://digiverse.chula.ac.th/Info/item/dc:34454
الوسوم: إضافة وسم
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الوصف
الملخص:The high porosity adsorbents, activated alumina, calcined alumina and fumed silica modified by the addition of amine solution were prepared for CO₂ and H₂S adsorption. The effect of variables, support type, amine type (polyethyleneimine (Mw. 800), aminoethyl ethanolamine, N-(3-trimethoxysilypropyl) diethylenetriamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine) and amount of amine loading on CO₂ and H₂S adsorption were investigated. The adsorbent was also characterized by Fourier Transform Infrared Spectroscopy (FT-IR), CHN Analyzer, Brunauer Emmett Teller Analyzer (BET), Thermo Gravimetric Analysis (TGA) and Scanning Electron Microscope (SEM). The results showed that the addition of amine groups enhanced carbon dioxide and hydrogen sulfide removal efficiency and the adsorbent had a good selectivity of acid gasses. For CO₂ adsorption, FSi-PEI800-40 gave a good breakthrough and saturation capacity of 3.494 mmol/g-sorb and 4.673 mmol/g-sorb, respectively. For H₂S adsorption, FSi-PEI800-40 gave a good breakthrough and saturation capacity of 0.063 mmol/g-sorb and 0.097 mmol/g-sorb, respectively. This result indicated that the adsorbents are promising for removing carbon dioxide and hydrogen sulfide. Moreover, FSi-PEI800-40 had good regenerability and stability with repeating adsorption – desorption cycles.