Solid Base Assisted n-Pentanol Coupling over VIII Group Metals: Elucidation of the Guerbet Reaction Mechanism by DRIFTS Full article
| Journal |
Industrial and Engineering Chemistry Research
ISSN: 0888-5885 , E-ISSN: 1520-5045 |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Output data | Year: 2017, Volume: 56, Number: 45, Pages: 13310-13321 Pages count : 12 DOI: 10.1021/acs.iecr.7b01853 | ||||||||
| Tags | SURFACE-REACTIONS; GAMMA-ALUMINA; ETHANOL; CATALYSTS; IR; CONDENSATION; ACID; ALCOHOLS; BUTANOL; ACETALDEHYDE | ||||||||
| Authors |
|
||||||||
| Affiliations |
|
Funding (1)
| 1 | Russian Foundation for Basic Research | 15-03-09329 |
Abstract:
Liquid phase catalytic coupling of n-pentanol over VIII group metals (Pt, Pd, Ir, Ru, Rh) on a range of supports (C, Al2O3, TiO2, CeO2, ZrO2) doped with different solid bases was done varying the reaction temperature and gas atmosphere. It was shown that n-pentanol coupling in the selected reaction conditions (180 °C, 10 bar of N2) mainly resulted in the formation of the target product 2-propyl-1-heptanol (Guerbet alcohol), whereas pentanal, 2-propyl-2-heptenal, 2-propyl-1-heptanal, and 2-propyl-1-heptenol were observed in minor quantities. Temperature increase accelerates the reaction and improves selectivity to 2-propyl-1-heptanol. Acid–base properties of the supports also influenced conversion and selectivity correlating with the support base strength TiO2 (860 kJ/mol) < ZrO2 (900 kJ/mol) < C (850–910 kJ/mol) < Al2O3 (935 kJ/mol). For carbon supported catalysts conversion increases in the raw Ir < Ru < Pt < Pd. Analysis of the reaction mechanism for NaOH/Pt/Al2O3 and the relative contributions of various catalytically active phases was done by in situ Fourier transform infrared spectroscopy.
Cite:
Panchenko V.N.
, Paukshtis E.A.
, Murzin D.Y.
, Simakova I.L.
Solid Base Assisted n-Pentanol Coupling over VIII Group Metals: Elucidation of the Guerbet Reaction Mechanism by DRIFTS
Industrial and Engineering Chemistry Research. 2017. V.56. N45. P.13310-13321. DOI: 10.1021/acs.iecr.7b01853 WOS Scopus РИНЦ AN OpenAlex
Solid Base Assisted n-Pentanol Coupling over VIII Group Metals: Elucidation of the Guerbet Reaction Mechanism by DRIFTS
Industrial and Engineering Chemistry Research. 2017. V.56. N45. P.13310-13321. DOI: 10.1021/acs.iecr.7b01853 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | May 2, 2017 |
| Accepted: | Jul 28, 2017 |
| Published online: | Aug 24, 2017 |
| Published print: | Nov 15, 2017 |
Identifiers:
| Web of science: | WOS:000415785500045 |
| Scopus: | 2-s2.0-85034236131 |
| Elibrary: | 31050906 |
| Chemical Abstracts: | 2017:1246718 |
| OpenAlex: | W2741725220 |