SciAct
Toggle navigation
  • EN
  • RU

Sections:

  • Articles
  • Books
  • Conference attendances
  • Conference theses
  • Patents

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

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883
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 Jia Lijun , Bulushev Dmitri A. , Beloshapkin Sergey , Ross Julian R.H.
Affiliations
1 University of Limerick
2 University of Limerick

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 J.R.H.
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 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
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:
publication_identifier.wos_identifier_type WOS:000340687900004
publication_identifier.scopus_identifier_type 2-s2.0-84901302270
publication_identifier.rinz_identifier_type 22057172
publication_identifier.accession_number_identifier_type 2014:1184862
publication_identifier.chemical_accession_number_identifier_type 161:292844
Altmetrics: