Advanced structural analysis of nanoporous materials by thermal response measurements

Langmuir : the ACS Journal of Surfaces and Colloids
Martin OschatzStefan Kaskel

Abstract

Thermal response measurements based on optical adsorption calorimetry are presented as a versatile tool for the time-saving and profound characterization of the pore structure of porous carbon-based materials. This technique measures the time-resolved temperature change of an adsorbent during adsorption of a test gas. Six carbide and carbon materials with well-defined nanopore architecture including micro- and/or mesopores are characterized by thermal response measurements based on n-butane and carbon dioxide as the test gases. With this tool, the pore systems of the model materials can be clearly distinguished and accurately analyzed. The obtained calorimetric data are correlated with the adsorption/desorption isotherms of the materials. The pore structures can be estimated from a single experiment due to different adsorption enthalpies/temperature increases in micro- and mesopores. Adsorption/desorption cycling of n-butane at 298 K/1 bar with increasing desorption time allows to determine the pore structure of the materials in more detail due to different equilibration times. Adsorption of the organic test gas at selected relative pressures reveals specific contributions of particular pore systems to the increase of the tempe...Continue Reading

References

Feb 9, 2008·Journal of the American Chemical Society·Celine LargeotPatrice Simon
May 7, 2008·Angewandte Chemie·Russell E Morris, Paul S Wheatley
Feb 25, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jarian VernimmenPegie Cool
Sep 29, 2011·Advanced Materials·Yunpu ZhaiSheng Dai
Feb 15, 2012·ACS Applied Materials & Interfaces·S PoradaP M Biesheuvel
Feb 22, 2012·Chemical Society Reviews·Lars BorchardtStefan Kaskel
Jul 19, 2012·Advanced Materials·Hirotomo Nishihara, Takashi Kyotani
Aug 3, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Katie A CychoszMatthias Thommes
May 25, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Martin OschatzJoaquín Silvestre-Albero

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Citations

Sep 24, 2015·ACS Applied Materials & Interfaces·Volodymyr BonStefan Kaskel
Feb 10, 2018·Journal of the American Chemical Society·Adam J Rieth, Mircea Dincă
Mar 14, 2017·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces· SuwarnoPetra E de Jongh

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