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Effects of using ZSM ‐5 and a rock‐reforming mineral as catalysts on liquid fraction collected from polypropylene pyrolysis
Author(s) -
Linh Nguyen Thi Truc,
Tuan Phan Dinh
Publication year - 2020
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201900103
Subject(s) - polypropylene , pyrolysis , fraction (chemistry) , catalysis , chemical engineering , mineral , materials science , zsm 5 , chemistry , composite material , chromatography , organic chemistry , zeolite , engineering
In this study, a rock‐reforming mineral and zeolite ZSM‐5 were used as catalysts in the pyrolysis of polypropylene (PP) to get liquid products. The structures of catalysts were investigated via XRD and FTIR techniques. The liquid fractions collected from the non‐catalytic and catalytic pyrolysis processes were indicated via GCMS measurement. The results show the rock‐forming mineral has the typical pattern of SiO 2 quartz, KAlSi 3 O 8 microcline, and H 2 KAl 3 (SiO 4 ) 3 muscovite phases, while the zeolite ZSM‐5 has the typical pattern of H 0.32 Al 0.32 Si 95.68 O 192 hydrogen aluminum silicate phase. The major products from PP pyrolysis without catalyst was 2,4‐ dimethyl‐1‐heptene (trimer), around 46.43 wt.% and the percentage of branched‐chain alkenes of 90.22 wt.% is significantly high. Whereas, the liquid products, which were formed from the catalytic pyrolysis using the rock‐reforming mineral and ZSM‐5 as catalysts, contain the significantly reduced portions of alkenes.