Surface Active Rubidium Carbonate Obtained from The Thermal Decomposition Course of Rubidium Acetate | ||||
| Egyptian Journal of Chemistry | ||||
| Article 3, Volume 54, Issue 4, August 2012, Page 455-467 PDF (367.38 K) | ||||
| DOI: 10.21608/ejchem.2011.1404 | ||||
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| Abstract | ||||
| THE THERMAL decomposition course of rubidium acetate ……. Rb(CH3COO) was probed on heating up to 1000 °C in a dynamic atmosphere of air by thermogravimetry and differential thermal analysis. The solid and gas-phase decomposition products were identified by X-ray diffractometry, ex- and in-situ infrared spectroscopy and mass spectrometry. Results obtained showed the acetate to decompose stepwise to yield eventually Rb2O at ≥ 900 °C encompassing the formation of the intermediate Rb2CO3 solid product (at 400-700 °C)) and H2O, (CH3)2CO and CO2 as primary gaseous products. A considerable enhancement of the production of primary gas phase products at 400-450 °C and the emergence of (CH3)2C=CH2, CH4 and CO molecules in the gas phase are ascribed to reactions occurring at the gas/solid interface at the expense of some of the primary products. The activity at the gas solid interface has been indicated These interfacial activities impart application-worthy adsorptive and catalytic functions for the associated solid products. | ||||
| Keywords | ||||
| Rubidium acetate; Rubidium carbonate; Infrared spectroscopy; Thermal analysis and Gas/solid interfacial reactivity | ||||
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