Applied Catalysis2022，Vol.30915.DOI:10.1016/j.apcatb.2022.121251

Highly selective conversion of mixed polyolefins to valuable base chemicals using phosphorus-modified and steam-treated mesoporous HZSM-5 zeolite with minimal carbon footprint

Mynko, Oleksii Goodarzi, Farnoosh Enemark-Rasmussen, Kasper Oenema, Jogchum Abbas-Abadi, Mehrdad Seifali Stefanidis, Georgios D. Van Geem, Kevin M. Eschenbacher, Andreas Varghese, Robin John Delikonstantis, Evangelos
Applied Catalysis2022，Vol.30915.DOI:10.1016/j.apcatb.2022.121251
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  • NSTL
  • Elsevier

Highly selective conversion of mixed polyolefins to valuable base chemicals using phosphorus-modified and steam-treated mesoporous HZSM-5 zeolite with minimal carbon footprint

Mynko, Oleksii 1Goodarzi, Farnoosh 2Enemark-Rasmussen, Kasper 2Oenema, Jogchum 1Abbas-Abadi, Mehrdad Seifali 1Stefanidis, Georgios D. 1Van Geem, Kevin M. 1Eschenbacher, Andreas 1Varghese, Robin John 1Delikonstantis, Evangelos3
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作者信息

  • 1. Univ Ghent
  • 2. Tech Univ Denmark
  • 3. AristEng Sarl
  • 折叠

Abstract

Catalytic fast pyrolysis of polyolefinic waste streams was investigated to recover valuable base chemicals at high selectivity. HZSM-5 zeolite with different properties, affected by Si/Al, mesoporosity, phosphorus stabilization, and steaming, were tested and thoroughly characterized. Different feeds, catalyst/feed ratios and reaction temperatures were evaluated in a micropyrolysis reactor coupled to two-dimensional gas chromatography. While unmodified HZSM-5 rapidly deactivated, phosphorus-modified and steamtreated HZSM-5 showed almost no deactivation due to its lower coking propensity during 130 runs with stable conversion towards C5+ aliphatics and high C-2-C-4 olefins selectivity (-75%) using post-consumer mixed polyolefins. The performance of this direct olefins production route with unprecedented high olefin selectivity was further evaluated in a plantwide context. It was found that it requires-37% lower energy input than the plastics pyrolysis followed by pyrolytic oil steam cracking, while it results to at least a one order of magnitude lower environmental burden as compared to waste incineration.

Key words

Pyrolysis/Catalyst/CO2 footprint/Chemical recycling/Olefins/Plastic waste/CATALYTIC FAST PYROLYSIS/LIGHT OLEFINS/HIERARCHICAL ZEOLITES/WASTE PLASTICS/ZSM-5/CRACKING/BED/TEMPERATURE/PERFORMANCE/ADDITIVES

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量27
参考文献量105
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