Main Routes of Ethanol Conversion Under Aerobic/Anaerobic Conditions Over Ag-Containing Zirconium Phosphate Catalyst | Sciact - CRIS-system of Boreskov Institute of Catalysis

Main Routes of Ethanol Conversion Under Aerobic/Anaerobic Conditions Over Ag-Containing Zirconium Phosphate Catalyst Full article

Journal

Current Organic Synthesis
ISSN: 1570-1794 , E-ISSN: 1875-6271

Output data

Year: 2017, Volume: 14, Number: 3, Pages: 389 - 393 Pages count : 5 DOI: 10.2174/1570179413666161031125407

Tags

Dehydrogenation, Ethanol, Oxidation, Silver nanoparticles, Zirconium phosphate

Authors

Dorofeeva Nataliya V. ^1,2 , Vodyankina Olga V. ² , Sobolev Vladimir I. ^2,3 , Koltunov Konstantin Yu. ^3,4 , Zaykovskii Vladimir I. ^3,4,5

Affiliations

1	Scientific Equipment Network Access Center, Tomsk Polytechnic University, Tomsk, Russian Federation
2	Laboratory of Catalytic Research, Department of Chemistry, Tomsk State University, Tomsk, Russian Federation
3	Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
4	Nature Science Department, Novosibirsk State University, Novosibirsk, Russian Federation
5	Physics Department, Novosibirsk State University, Novosibirsk

Funding (1)

National Research Tomsk State University

8.2.07.2015

Background: Double metal phosphates, such as silver- and copper-zirconium phosphates, are considered promising materials for alcohol transformation to high-value chemicals (aldehydes, esters, olefins) due to high functional properties. Objective: The work was aimed to synthesize AgZr2(PO4)3 and Zr2.25(PO4)3 and study the influence of reduction conditions on their chemical and phase composition as well as catalytic properties under aerobic and anaerobic ethanol transformation. Methods: The structure of the catalysts was characterized by the XRD and HR TEM methods. The gas-phase ethanol conversion was studied in the temperature-programmed mode with online chromatographic analysis of reaction products. Results: The treatment of silver-zirconium phosphate with hydrogen leads to formation of 5-10 nm Ag0 particles along with partial destruction of initial AgZr2(PO4)3 phase. The products of the acidic route are eliminated under oxygen-free conditions for both catalysts, while the acetaldehyde is mainly formed in the oxygen-containing reaction mixtures. The formation of acetaldehyde over zirconium phosphate involves formation of Zr4+Oads oxidized sites. The highest yield of acetaldehyde is 74% at 330 oC and 93% ethanol conversion over Ag-containing catalyst in aerobic conditions. Conclusion: The ethanol dehydration is the main reaction pathway under anaerobic conditions regardless of the presence of Ag. In contrast, the presence of oxygen in the feed favors ethanol conversion to acetaldehyde.

Dorofeeva N.V. , Vodyankina O.V. , Sobolev V.I. , Koltunov K.Y. , Zaykovskii V.I.
Main Routes of Ethanol Conversion Under Aerobic/Anaerobic Conditions Over Ag-Containing Zirconium Phosphate Catalyst
Current Organic Synthesis. 2017. V.14. N3. P.389 - 393. DOI: 10.2174/1570179413666161031125407 WOS Scopus РИНЦ AN OpenAlex

Published print:	Mar 1, 2017
Submitted:	Mar 16, 2017
Accepted:	May 3, 2017

Web of science:	WOS:000396024000010
Scopus:	2-s2.0-85018525057
Elibrary:	41778154
Chemical Abstracts:	2017:449583
OpenAlex:	W2591888660

DB	Citing
Web of science	2
Scopus	2
Elibrary	3
OpenAlex	2