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SnO 2 − CuO − NaCl / SiO 2 Catalysts for Propylene Epoxidation
| Content Provider | Semantic Scholar |
|---|---|
| Author | Miller, Aaron E. Zohour, Bahman Seubsai, Anusorn Noon, Daniel P. Senkan, Selim M. |
| Copyright Year | 2013 |
| Abstract | The discovery of heterogeneous catalysts capable of direct gas-phase production of propylene oxide (PO) from propylene and molecular oxygen remains a challenge in industrial catalysis. The SnO2−CuO−NaCl/SiO2 system has been shown to produce PO at 55−60% selectivity with propylene conversion of 1% at 250 °C and 1 bar. A product shift toward CO2, found to occur during continuous operation, was counteracted by cofeeding 10−50 ppm 1-chloropropane, maintaining peak PO selectivities for 12 h. Temperature-programmed-reduction (TPR) studies indicated that Na increases copper dispersion. Additional catalyst characterization studies performed by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) showed the presence of distinct phases of CuO, SnO2, and NaCl. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.seas.ucla.edu/~senkan/PDF/Sn%20Catalysts%20for%20Propylene%20Epoxidation.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | 1-chloropropane Carbon Dioxide Computed Tomography Scanning Systems Continuous operation Copper(II) oxide Guilty Gear Xrd Numerical aperture Oxygen S-Nitrosylation Selectivity (electronic) Sodium Chloride Tin dioxide Transmission Electron Microscopy part per million (ppm) propylene oxide |
| Content Type | Text |
| Resource Type | Article |
