Abstract
Three valsartan metal (tin, nickel, and magnesium) complexes were examined as capture and storage media for methane under high temperature (323 K) and pressure (50 bar) conditions. The surface morphology of the complexes were examined using Field emission scanning electron microscopy and displayed porous structures comprising particles of different shapes and sizes. The narrow pore-size distribution of metal complexes makes them suitable materials for methane capture. The methane adsorption–desorption isotherms of the metal complexes were reversible. The tin(IV) and nickel(II) complexes exhibited type-III physisorption isotherms, while the magnesium(II) complex displayed a type-IV physisorption isotherm. Both types of isotherms are typical for mesoporous materials. The magnesium(II) complex was more efficient compared with the tin(IV) and nickel(II) complexes. It exhibited a remarkable methane uptake capacity of 71.68 cm3/g under optimized conditions.
Highlights
Natural gas is an alternative energy source to petroleum and coal
The Field emission scanning electron microscopy (FESEM) images of 1–3 (Fig. 2) show porous structures that are homogeneous and rough with irregular surfaces composed of loose agglomerates of tiny particles
The narrow pore-size distribution of complexes 1–3 makes them suitable materials for CH4 capture
Summary
Natural gas is an alternative energy source to petroleum and coal. Commercial natural gas contains methane (CH4; 95%), ethane (3.2%), and other gas impurities (1.7%) [1]. Gas impurities have a negative effect on the CH4 storage capacities of adsorbent materials. Various porous materials have been designed and tested as capture media for C H4 [10,11,12,13]. MOFs are potential effective materials for gas capture, and their pores can be tuned to improve their adsorption capacities [14]. The adsorption and capture of gases over using new materials as storage media have received attention [17,18,19,20,21]. Valsartan metal complexes were found to be very effective as carbon dioxide (CO2) storage media [26]. Safe, and non-toxic medication that contains heterocyclic and aryl moieties [32, 33]
Sign-in/Register to view highlights & summary 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.
