Preparation of new carbon molecular sieves for optimized carbon dioxide adsorption and product yield

doi:10.1016/S1872-5805(20)60485-1

New Carbon Materials

Volume 35, Issue 3, June 2020, Pages 209-219

https://doi.org/10.1016/S1872-5805(20)60485-1 Get rights and content

Abstract

Chemical vapor deposition (CVD)from methane on activated carbon prepared by zinc chloride activation of residue extracted from sunflower seeds, has been optimized to produce carbon molecular sieves using the Taguchi method, targeted at achieving maximum CO₂ adsorption capacity and an increased product yield. The carbon molecular sieves were characterized by N₂ adsorption, CO₂ adsorption, elemental analysis, SEM and FTIR. The CO₂ adsorption capacities were measured at 1 bar/273 K. The optimized carbon molecular sieve with the highest product yield of 91 wt.% had amaximum CO₂ adsorption of 2.6228 mmol g^-1. Both nitrogen and oxygen surface functional groups and the narrow micropores are crucial for CO₂ adsorption. The Taguchi method is a powerful tool to simultaneously optimize the carbon dioxide adsorption capacity and the yield of carbon molecular sieves.

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