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Solvent-Free CO2 Cycloaddition of Propylene Oxide via Novel Composite of SAPO-34/ZIF-8
Digital Document
Description / Synopsis |
Description / Synopsis
In this research, ZIF-8/SAPO-34 composites with various wt.% of ZIF-8 and SAPO-34 were prepared and used as catalysts to synthesize cyclic carbonate solventless from CO2 and propylene oxide. Among composites, SAPO-34/ZIF-8 75:25 wt.% (S/Z25) had the highest conversion value of 92.59%, confirmed by 1HNMR analysis. Various physicochemical techniques were used to characterize the optimized composite, including X-ray diffraction (XRD), SEM, FT-IR, and BET. The impact of different reaction parameters such temperature, reaction time, CO2 pressure, and catalyst amount on the catalyst reactivity were studied. The highest conversion value has been obtained at 120 psi, 100 ℃, and 240 min. The conversion value was decreased by 20% when the catalyst loading value was changed from 0.4 to 0.1 g. Additionally, the catalyst's recyclability was confirmed for three runs without any significant changes in conversion. However, it was observed that after five repeated tests of reusability, the conversion percentage value decreased from 92.59% to 88.66%. |
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Persons
Author (aut): Zeinalzadeh, Hossein
Thesis advisor (ths): Kazemian, Hossein
Degree committee member (dgc): Reimer, Kerry
Degree committee member (dgc): Thring, Ronald Wallen
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DOI
https://doi.org/10.24124/2024/59466
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Degree granting institution (dgg): University of Northern British Columbia
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1 online resource (xi, 55 pages)
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Physical Description Note
PUBLISHED
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English
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Solvent-Free CO2 Cycloaddition of Propylene Oxide via Novel Composite of SAPO-34/ZIF-8
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application/pdf
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2936572
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