Abstract
Adsorption energy distributions (AEDs) can be calculated from measured adsorption isotherms by numerical methods upon regularization of the adsorption integral equation. The regularization solves the ‘ill-posed problem’ of the adsorption integral equation. In this paper, the so-called U- and L-curve methods and the modified U-curve method for estimating the optimal regularization parameter are tested with synthetic nitrogen adsorption isotherms. The isotherms are calculated from AEDs with one (minimum) to five (maximum) peaks using a simple gas adsorption model. To verify the U- and L-curve methods, the originally generated AED functions with different number of peaks are compared with those obtained back from the synthetic isotherms using the INTEG regularization method. The results show that the L-curve method is superior to the U-curve methods for finding the optimal regularization parameter.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
