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A simple strategy to prepare graphene oxide modified by ammonia gas catalysts for Knoevenagel condensation.
- Source :
-
Research on Chemical Intermediates . Mar2018, Vol. 44 Issue 3, p1523-1536. 14p. 1 Diagram, 5 Charts, 7 Graphs. - Publication Year :
- 2018
-
Abstract
- A facile and simple strategy to prepare ammonia gas-modified graphene oxide (GO) catalysts was successfully established by gas–solid acid–base reaction at room temperature. The catalytic performances of ammonia gas-modified GO samples were examined in Knoevenagel condensation. The samples were characterized by X-ray diffraction, Fourier transform infra-red spectroscopy, X-ray photoelectron spectroscopy, atomic force microscope, NH3 temperature-programmed desorption and elemental analysis. The results indicated that the excellent performances of the ammonia gas-modified GO samples in Knoevenagel condensation should be ascribed to the formation of ammonium ions (NH4+) by the reaction between ammonia gas and the carboxyl groups located on the edge of the GO. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRAPHENE oxide
*AMMONIA gas
*CONDENSATION
*TEMPERATURE effect
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 09226168
- Volume :
- 44
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Research on Chemical Intermediates
- Publication Type :
- Academic Journal
- Accession number :
- 128053375
- Full Text :
- https://doi.org/10.1007/s11164-017-3182-2