Journal
RSC ADVANCES
Volume 2, Issue 9, Pages 3810-3815Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra00015f
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Funding
- Cottrell College
- Research Corporation for Science Advancement
- Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- China High-Tech Development 863 Program [2009AA034900, 2009AA03Z340]
- U.S. Environmental Protection Agency
- U.S. Department of Agriculture [2011-38422-30803]
- Welch Foundation
- China Scholarship Council
- NIFA [2011-38422-30803, 579122] Funding Source: Federal RePORTER
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The immobilization of 1-butyl-3-methylimidazolium chloride (BMIMCl) was achieved via the intercalation of BMIMCl into layered h-zirconium phosphate (theta-ZrP), a hydrated form of a-zirconium phosphate. The intercalation process was studied by controlling the feed ratio of BMIMCl to theta-ZrP. X-ray diffraction characterization revealed that the formed intercalation compounds exhibited multiple phases depending on the intercalation ratio. theta-ZrP served as an excellent host for the intercalation of BMIMCl. The immobilized BMIMCl was evaluated via a coupling reaction of CO2 and propylene oxide to synthesize propylene carbonate. The results showed that the immobilized BMIMCl could maintain a similar catalytic reactivity to un-supported BMIMCl. After immobilization, the BMIMCl catalyst could be effectively separated from the products and recycled, and the recycled catalyst maintained high reactivity. Overall, the immobilization of BMIMCl into theta-ZrP enables BMIMCl to be a greener catalyst for a green chemical process.
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