Functional use of CO2 for environmentally benign production of hydrogen through catalytic pyrolysis of polymeric waste

Valorization of disposable COVID-19 mask through the thermo-chemical process

“…To reinforce the mechanistic functionality of CO 2 during pyrolysis of a disposable mask, earth abundant Ni catalyst was adopted, and all pyrolysates through catalytic pyrolysis were characterized. This catalyst was utilized due to its known catalytic capability for dehydrogenation for H 2 production [35] , [36] . For fundamental study, the main constituents of a disposable mask were determined through analyses of functional groups, organic/inorganic contents, and thermal stability.…”

Catalytic pyrolysis of plastics derived from end‐of‐life‐vehicles ( ELVs ) under the CO 2 environment

“…From the catalytic pyrolysis over Co/SiO 2 and Ni/SiO 2 under CO 2 condition, the expedited production of syngas was shown. However, the plastic pyrolysis using catalysts generally suffered from catalyst deactivation 33 . To make the CO 2 ‐assisted catalytic pyrolysis practical platform, the catalyst deactivation derived from the coke deposition on the catalyst surface should be resolved.…”

Sustainable recycling technologies for thermoplastic polymers and their composites: A review of the state of the art

“…These findings could indicate that CFA and concrete/cement waste have the potential to be low-cost catalyst sources. However, the work done by Jung et al [107] reveals that the PE pyrolysis with a Ni-based catalyst improved the production of H 2 under an N 2 environment, despite the fast deactivation of the catalyst due to the formation of coke. This problem can be solved by undergoing pyrolysis in a CO 2 atmosphere, in which coke is converted to CO and light hydrocarbons.…”