CHED 834 |
| Miranda J. Hayman, Department of Chemistry, Wittenberg University, University of Southern California, 315 Bill Edwards Dr, Springfield, OH 45501, David M. Marcus, Department of Chemistry, University of Southern California, Los Angeles, CA 90089, and James F. Haw, Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089-1661. |
| Ketene was synthesized quantitatively by pyrolysis of acetic anhydride at 1033 K on 4-mesh quartz chips, as demonstrated by GC-MS and GC-FID. Ketene was then used to acetylate the acid sites of the microporous silico-aluminophosphate HSAPO-34. These framework-bound acetyl groups were characterized by 13C MAS NMR. Using 13C labeled acetic anhydride, a peak at 184 ppm was observed and assigned to the framework-bound species. Ketene was also used to modify in situ the organic reaction centers (methylbenzenes) formed during MTO chemistry on HSAPO-34. The catalyst beds were digested in 1M HCl, and then the entrained organics were extracted with CCl4 and analyzed by GC-MS and GC-FID. Several acetylated species were detected, the most prominent being trimethylacetophenone. |
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Undergraduate Research Poster Session: Organic Chemistry
2:00 PM-4:00 PM, Monday, March 29, 2004 Anaheim Convention Center -- Hall A, Poster
Division of Chemical Education |