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بررسی اثر چارچوب فلز-آلی حاوی عامل کربوکسیل اضافی روی جداسازی CO2 در غشاء بر پایه PEBAX | ||
| شیمى کاربردى روز | ||
| دوره 20، شماره 74، فروردین 1404، صفحه 217-234 اصل مقاله (1.18 M) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2025.36657.2335 | ||
| نویسنده | ||
| الهه احمدی فیجانی* | ||
| گروه شیمی کاربردی، دانشکده شیمی و علوم نفت، دانشگاه بوعلی سینا، همدان، ایران | ||
| تاریخ دریافت: 02 بهمن 1403، تاریخ بازنگری: 14 خرداد 1404، تاریخ پذیرش: 28 خرداد 1404 | ||
| چکیده | ||
| فرایندهای غشائی به عنوان روشهای اقتصادی برای جداسازی توجه بسیاری را به خود جلب نمودهاند. در این مطالعه غشاهای ماتریس مختلط از وارد نمودن UiO-66-(COOH)2 در ماتریس پلی(اتر-بلاک-آمید) (PEBAX) با درصدهای وزنی متفاوت با روش ریختهگری محلول و تبخیر حلال ساخته شدند. از آنالیزهای FT-IR، XRD، TGA، DSC و FESEM برای ارزیابی خواص غشاء ماتریس مختلط استفاده گردید. عبور دو گاز خالص CO2 و N2 از غشاها در دمای °C25 و فشار 2 بار اندازهگیری شد.نتایج نشان داد که وارد نمودن %wt 15 از UiO-66-(C)OOH)2 در ماتریس PEBAX منجر به 135 و %127 افزایش به ترتیب در عبور CO2 و انتخابپذیری CO2/N2 نسبت به غشاء خالص گردید. همچنین اثر افزایش دما و فشار بر روی رفتار گازی این غشاء مورد بررسی قرار گرفت. افزایش دما منجر به افزایش عبورCO2 و کاهش انتخابپذیری CO2/N2 گردید و افزایش فشار افزایش در هر دو را به دنبال داشت. در فشار bar 6 و دمای °C25،به ترتیب 174 و %145 افزایش در عبور CO2 و انتخابپذیری CO2/N2 نسبت به غشاء خالص ثبت گردید | ||
| کلیدواژهها | ||
| غشاء؛ جداسازی CO2؛ چارچوب فلز-آلی؛ PEBAX | ||
| عنوان مقاله [English] | ||
| Investigation of the effect of metal-organic framework containing additional carboxyl group on CO2 separation in PEBAX-based membrane | ||
| نویسندگان [English] | ||
| Elahe Ahmadi Feijani | ||
| Department of Applied Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu–Ali Sina University, Hamedan 6517838695, Iran | ||
| چکیده [English] | ||
| Membrane-based processes have attracted significant attention as economical methods for separation. In this study, mixed matrix membranes were fabricated by incorporating UiO-66-(COOH)2 into a poly(ether-block-amide) matrix at various loading percentages using the solution casting and solvent evaporation method. FT-IR, XRD, TGA, DSC, and FESEM analyses were employed to evaluate the properties of the mixed matrix membrane. Pure CO2 and N2 gas permeability through the membranes was measured at 25°C and 2 bar. Results showed that incorporating 15 wt% of UiO-66-(COOH)2 into the poly(ether-block-amide) matrix led to a 135% and 127% increase in CO2 permeability and CO2/N2 selectivity, respectively, compared to the pure membrane. The effect of increasing temperature and pressure on the gas transport behaviour of this membrane was also investigated. Increasing temperature resulted in an increase in CO2 permeability and a decrease in CO2/N2 selectivity, while increasing pressure led to an increase in both. At 6 bar and 25°C, a 174% and 145% increase in CO2 permeability and CO2/N2 selectivity, respectively, was registered compared to the pure membrane. | ||
| کلیدواژهها [English] | ||
| Membrane, CO2 separation, Metal-organic framework, PEBAX | ||
| مراجع | ||
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