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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 Научная публикация

Журнал Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883
Вых. Данные Год: 2014, Том: 160-161, Страницы: 35-43 Страниц : 9 DOI: 10.1016/j.apcatb.2014.05.004
Ключевые слова Doping, Formic acid, Hydrogen production, Palladium, Potassium formate
Авторы Jia Lijun 1 , Bulushev Dmitri A. 1 , Beloshapkin Sergey 2 , Ross R.H.Julian 1
Организации
1 Chemical & Environmental Sciences Department, University of Limerick, Limerick, Ireland
2 Materials & Surface Science Institute, University of Limerick, Limerick, Ireland

Информация о финансировании (3)

1 Science Foundation Ireland 06/CP/E007
2 Government of Ireland
3 China Scholarship Council

Реферат: 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.
Библиографическая ссылка: 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 CAPlusCA OpenAlex
Файлы: Полный текст от издателя
Даты:
Поступила в редакцию: 21 мар. 2014 г.
Принята к публикации: 3 мая 2014 г.
Опубликована online: 10 мая 2014 г.
Опубликована в печати: 1 нояб. 2014 г.
Идентификаторы БД:
Web of science: WOS:000340687900004
Scopus: 2-s2.0-84901302270
РИНЦ: 22057172
Chemical Abstracts: 2014:1184862
Chemical Abstracts (print): 161:292844
OpenAlex: W2094030863
Цитирование в БД:
БД Цитирований
Web of science 67
Scopus 71
OpenAlex 72
Альметрики: