Catalytic fast pyrolysis of waste mixed cloth for the production of value-added chemicals

In the present study, catalytic fast pyrolysis of waste mixed cloth in an ex-situ method using hierarchical HZSM and commercial CaO was investigated. Pyrolysis of waste mixed cloth in a temperature range of 450 degrees C to 750 degrees C mainly allowed for the formation of levoglucosan without any catalysts. The utilization of HZSM with Br & oslash;nsted/Lewis acid sites on micro-and mesoporous structures significantly contributed to monocyclic/dicyclic chemicals production, mainly referring to monoaromatics and naphthalene-based derivatives, especially in the case of high heating rates and catalyst usages. Furthermore, CaO revealed strong deoxygenation performance for the transformation of waste mixed cloth into low oxygen-containing chemicals, such as ketones, aliphatic hydrocarbons and aromatics. The present research thus highlights a feasible route for the catalytic upgrading of waste mixed cloth into some kinds of value-added chemicals. (c) 2021 Elsevier Ltd. All rights reserved.

Automated summary

This study investigates the catalytic fast pyrolysis of waste mixed cloth using hierarchical HZSM and commercial CaO. The use of HZSM contributed to the production of monocyclic and dicyclic chemicals, while CaO showed strong deoxygenation performance for the transformation into low oxygen-containing chemicals. This research highlights a feasible route for upgrading waste mixed cloth into value-added chemicals.