Binderless Faujasite Beads with Hierarchical Porosity for Selective CO Adsorption for Biogas Upgrading.

Biomethane can be isolated from biogas through selective CO adsorption. Faujasite-type zeolites are promising adsorbents for CO separation due to their high CO adsorption capacity. While commonly inert binder materials are used to shape zeolite powders into the desired macroscopic format for application in an adsorption column, here we report the synthesis of Faujasite beads without the use of a binder and their application as CO-adsorbents.

Solubilities and Transport Properties of CO, Oxalic Acid, and Formic Acid in Mixed Solvents Composed of Deep Eutectic Solvents, Methanol, and Propylene Carbonate.

Recently, deep eutectic solvents (DES) have been considered as possible electrolytes for the electrochemical reduction of CO to value-added products such as formic and oxalic acids. The applicability of pure DES as electrolytes is hindered by high viscosities. Mixtures of DES with organic solvents can be a promising way of designing superior electrolytes by exploiting the advantages of each solvent type.