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Chemical Equilibria in Formic Acid/Amine‐CO 2 Cycles under Isochoric Conditions using a Ruthenium(II) 1,2‐Bis(diphenylphosphino)ethane Catalyst
Author(s) -
Sordakis Katerina,
Beller Matthias,
Laurenczy Gábor
Publication year - 2014
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201300740
Subject(s) - formic acid , isochoric process , dehydrogenation , chemistry , ruthenium , catalysis , inorganic chemistry , formate , hydrogen , amine gas treating , carbon dioxide , organic chemistry , thermodynamics , physics
The equilibrium position in formic acid/amine–CO 2 systems has been examined as a function of pressure and temperature under isochoric conditions. The homogeneous ruthenium(II)‐1,2‐bis(diphenylphosphino)ethane catalyst was active in both reactions, that is, in formic acid cleavage producing pure hydrogen and CO 2 , as well as in carbon dioxide hydrogenation under basic conditions. High yields of formic acid dehydrogenation into H 2 and CO 2 are favored by low gas pressures and/or high temperatures, and H 2 uptake is possible at elevated H 2 –CO 2 pressures. These results take us one step closer to the realization of a practical H 2 storage–discharge device.