Hydrogen Production from Formic Acid Vapour over a Pd/C Catalyst Promoted by Potassium Salts: Evidence for Participation of Buffer-Like Solution in the Pores of the Catalyst Full article
| Journal |
Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883 |
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| Output data | Year: 2014, Volume: 160-161, Pages: 35-43 Pages count : 9 DOI: 10.1016/j.apcatb.2014.05.004 | ||||
| Tags | Doping, Formic acid, Hydrogen production, Palladium, Potassium formate | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Science Foundation Ireland | 06/CP/E007 |
| 2 | Government of Ireland | |
| 3 | China Scholarship Council |
Abstract:
Doping a 1 wt.% Pd/C catalyst with alkali metal carbonates has a very significant promotional effecton its activity in hydrogen production from the decomposition of formic acid vapour (2 vol.%, 1 bar),potassium and caesium carbonates giving the largest effects. The K carbonate species present on the freshcatalysts react with formic acid to form formate ions, these being dissolved in a formic acid/water solutioncondensed in the pores of the support. The steady-state activities of the samples containing formate ionswere 1–2 orders of magnitude greater than those of the unpromoted Pd/C and CO content was lowerthan 30 ppm. The activation energies for the reaction increased with doping from 66 to 88–99 kJ mol−1,relatively independent of the cation of the dopant. Similar but lesser effects were found with unsupportedPd nanocrystals doped with K carbonate. The rate-determining step for the promoted samples appearsto be the decomposition of formate ions on the Pd surface.
Cite:
Jia L.
, Bulushev D.A.
, Beloshapkin S.
, Ross R.H.J.
Hydrogen Production from Formic Acid Vapour over a Pd/C Catalyst Promoted by Potassium Salts: Evidence for Participation of Buffer-Like Solution in the Pores of the Catalyst
Applied Catalysis B: Environmental. 2014.
V.160-161. P.35-43. DOI: 10.1016/j.apcatb.2014.05.004
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
Hydrogen Production from Formic Acid Vapour over a Pd/C Catalyst Promoted by Potassium Salts: Evidence for Participation of Buffer-Like Solution in the Pores of the Catalyst
Applied Catalysis B: Environmental. 2014.
V.160-161. P.35-43. DOI: 10.1016/j.apcatb.2014.05.004
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Mar 21, 2014 |
| Accepted: | May 3, 2014 |
| Published online: | May 10, 2014 |
| Published print: | Nov 1, 2014 |
Identifiers:
| Web of science: | WOS:000340687900004 |
| Scopus: | 2-s2.0-84901302270 |
| Elibrary: | 22057172 |
| Chemical Abstracts: | 2014:1184862 |
| Chemical Abstracts (print): | 161:292844 |
| OpenAlex: | W2094030863 |