Investigation of the Catalytic Pyrolysis Of Polyester/Viscose Fibers with Monometallic-Supported Montmorillonite

IF 2.2 4区 工程技术 Q1 MATERIALS SCIENCE, TEXTILES Fibers and Polymers Pub Date : 2025-02-21 DOI:10.1007/s12221-025-00882-8
Hongmei Peng, Pingli Li, Qi Yang
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Abstract

Inexpensive and active catalysts can improve the technical and economic efficiency of waste textiles. Therefore, several inexpensive metal materials have been added to clay-like montmorillonite (MMT) to improve its catalytic activity in the pyrolysis of polyester/viscose fibres. The Brunauer‒Emmett‒Teller (BET) method indicated that the MMT had a high specific surface area, which provided sufficient internal space for active metal dispersion and ample adsorption capacity for tar distillate and cracking products. Temperature-programmed desorption of NH3 (NH3-TPD) revealed that the acidity balance of the catalyst improved after different metals were added. Pyrolysis–gas chromatography/mass spectrometry (Py–GC/MS) studies revealed that the selectivity of MMT for aromatics increased after metal loading, and the selectivities of the Zn-containing MMT for monocyclic aromatics (MAHs) and polycyclic aromatics (PAHs) were the highest, at 46.70% and 27.68%, respectively. MMT-supported Ni increased the content of heavy aromatic hydrocarbons formed, with PAH contents of up to 43.16%, which made the catalyst more prone to deactivation during catalytic pyrolysis. The Mg-containing MMT showed similar catalytic activity to that of Ca-containing MMT in the catalysis of fibre pyrolysis; both produced more aromatics and favoured the formation of PAHs. These results indicate that various metal-containing MMT catalysts had significant effects on the yields of aromatic hydrocarbons during pyrolysis.

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来源期刊
Fibers and Polymers
Fibers and Polymers 工程技术-材料科学:纺织
CiteScore
3.90
自引率
8.00%
发文量
267
审稿时长
3.9 months
期刊介绍: -Chemistry of Fiber Materials, Polymer Reactions and Synthesis- Physical Properties of Fibers, Polymer Blends and Composites- Fiber Spinning and Textile Processing, Polymer Physics, Morphology- Colorants and Dyeing, Polymer Analysis and Characterization- Chemical Aftertreatment of Textiles, Polymer Processing and Rheology- Textile and Apparel Science, Functional Polymers
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