Synthesis and characterization of potassium-modified alumina superbases
作者： Ying Wang , Jian Hua Zhu , Wen Yu Huang
DOI: 10.1039/B100084P
关键词:
摘要: Novel solid superbases can be prepared by dispersing potassium salts such as K2CO3 and KHCO3 on alumina followed thermal treatments. The resulting materials show an extremely high activity in the isomerization of cis-but-2-ene at 0°C possess base strength least H− = + 26.5. X-Ray diffraction (XRD) Raman spectra or modified reveal formation hydroalumina carbonate, which is precursor active species. Decomposition has been studied use gravimetric differential analysis (TG-DTA) temperature programmed decomposition-mass spectrometry (TPDE-MS). Two CO2 evolution processes were observed TPDE –MS profile, corresponding to decomposition of carbonate bulk salt.
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