Forging a sustainable sky: Unveiling the pillars of aviation e-fuel production for carbon emission circularity

Ozkan, Mihrimah; Narappa, Anvaya B.; Namboodiri, Thrayesh; Chai, Yijian; Babu, Matheshwaran; Jennings, Joan S.E.; Gao, Yingfan; Tasneem, Sameeha; Lam, Jason; Talluri, Kamal R.; Shang, Ruoxu; Ozkan, Cengiz S.; Watkins, Jordyn M.

doi:10.1016/j.isci.2024.109154

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…112,118,126,127 Among the high-value liquid fuels, aviation fuel is in high demand globally, with planes consuming around 250 million tonnes of fuel in 2021, equivalent to about 10.75 exajoules. 128 Particularly, research has mainly focused on hydrogenolysis and hydro-cracking reactions, which effectively cleave C−C bonds of polyolefin-based plastics (PP, PE). 34,42,121−124,129−136 Numerous studies have provided valuable insights into catalyst performance in the chemical recycling of plastic waste and have proposed underlying mechanisms associated with metal catalyst utilization.…”

Section: ■ Catalytic Upcycling Of Mixed Plastics Using Supported Meta...mentioning

confidence: 99%

Catalytic Approaches to Tackle Mixed Plastic Waste Challenges: A Review

Kwon,

Jeong,

Kim

et al. 2024

Langmuir

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Plastics are widely used materials in our daily lives and various industries due to their affordability and versatility. The massive production of plastic waste, however, has recently emerged as a pressing environmental concern across all media. To address this, emerging technologies are being explored for the sustainable valorization of postconsumer plastic wastes including thermochemical, physical, and catalytic processes aimed at transforming them into higher value-added products. However, the chemical recycling of mixed plastic wastes poses a formidable challenge due to the diverse array of monomers and catalyst systems involved, each employing distinct mechanisms. Complicating matters further is that contaminants reduce catalytic efficacy, requiring rigorous and labor-intensive separation and purification processes to extract individual plastic streams from practical plastic waste mixtures. Consequently, the majority of such mixtures often end up in incineration and landfills, perpetuating environmental and societal challenges, such as leachate, carbon dioxide emissions, and other air pollutants. This review will introduce current technical developments available for recycling practical plastic waste mixtures through catalytic processes. The current challenges in process performance, low selectivity of the desired products, and catalyst deactivation from the catalysis of plastic waste mixtures are also discussed. Promising approaches to overcome the problems are suggested in future research directions.

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