ArticleRSC advances2025
Synthesis of acidic-basic Y zeolite from kaolin: catalytic and mechanism study in the cracking of polyethylene.
Article in RSC advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.
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Corrections and comments
- Erratum issued
Authors and funding
6 authors.
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Abstract
Cracking of plastic waste by the acidic FAU-type zeolites faces challenges of low production of light olefins, a high amount of coke formation, and expensive process. Basic zeolites might be a better alternative; however, their preparation is difficult and the related cracking mechanism is unknown. We addressed these difficulties by direct synthesis of a hierarchical acidic-basic FAU-type zeolite (HY-BS) using silica extracted from a low-grade kaolin containing alkaline (earth) metals and investigated the impact of basicity in the linear low density polyethylene (LLDPE) cracking mechanism and products distribution. Compared to an acidic HY zeolite, the HY-BS presented comparable density of Brønsted acidity but a drastically higher density of the basicity. The HY-BS had comparable activity to the reference HY zeolite, but it produced twice light olefins (30.5
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