Experimentally Verified Alkane Adsorption Isotherms in Nanoporous Materials from Literature Meta-Analysis

Identification of independent experimental
replicate measurements
of well-defined physical properties provides a useful way to assess
the reproducibility of literature reports of these properties. Prior
meta-analysis of this kind for single-component adsorption of CO2 and alcohols in nanoporous materials showed that ∼20%
of reported isotherms for these molecules were inconsistent with available
replicate measurements. In this paper, we extend this analysis to
the single-component adsorption of alkanes in nanoporous materials
using a collection of 2998 experimental isotherms. Among these isotherms,
846 replicates were identified and analyzed. Many more replicates
are available for CH4 adsorption than for any other alkane.
Our analysis finds that 15% of the replicate alkane isotherms are
inconsistent with other replicate measurements. After discarding these
outlier isotherms we report graphical and numerical consensus isotherms
for 93 independent combinations of adsorbate, adsorbent, and temperature
as well as an assessment of another 124 independent systems for which
two replicate isotherms are available.