Journal
CATALYSIS COMMUNICATIONS
Volume 90, Issue -, Pages 65-69Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2016.11.020
Keywords
Montmorillonite; Acid activation; Solketal; Glycerol; Acetone
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Funding
- SB RAS project [V.44.2.12]
- Ministry of Education and Science of the Russian Federation
- Spanish Ministry of Economy and Competitiveness (MINECO)
- European Regional Development Fund (FEDER) [MAT2013-47811-C2-R]
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The effect of add modification of a natural montmorillonite clay (MM) by HNO3 on the catalytic properties of MM from Dash-Salakhlinsk (Kazakhstan) has been investigated in the synthesis of solketal from glycerol and acetone in solvent free and acetonitrile media. HNO3 concentration allowed to control the chemical composition, the surface acidity, the porous structure of the acid-activated MMs and their catalytic performance. The main reaction product was solketal with 86.6-98% selectivity. Conversion of glycerol depended on the Bronsted acidity. The most active sample, namely, MM activated with 0.5 mol/dm(3) HNO3, showed good reusability for 3 catalyst cycles. (C) 2016 Elsevier B.V. All rights reserved.
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