Catalytic hydropyrolysis of a model municipal waste plastic mixture over composite USY/SBA-16 catalysts

Dureem Munir, Muhammad Usman

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Hydropyrolysis of a model municipal waste plastic mixture is studied using in-house composites of zeolite USY with mesoporous SBA-16. Three different TEOS/USY weight ratios such as 0.75, 0.92, and 1.2 are employed in the synthesis of the composite catalysts. For the comparison, a composite USY with mesoporous SBA-15 and a mesoporous Al-SBA-16 are also prepared. The catalysts are characterized by using SEM, TEM, EDX, XRD, N2-BET, FTIR, and py-FTIR. Hydropyrolysis performance of the catalysts is studied in a stirred autoclave reactor at initial cold hydrogen pressure of 20 bar and at three reaction temperatures of 375 °C, 400 °C, and 425 °C. The effect of residence time on the hydropyrolysis performance of the catalysts is also studied. The characterization results revealed that the crystallinity decreases with an increase in TEOS/USY ratio. It is found that the composites of USY/SBA-16 delivered more conversion and liquid yield compared to their parent USY catalyst.

Original languageEnglish
Pages (from-to)44-53
Number of pages10
JournalJournal of Analytical and Applied Pyrolysis
Volume135
DOIs
Publication statusPublished - Oct 1 2018

Keywords

  • Composite catalysts
  • Hydropyrolysis
  • Micro-mesoporous catalysts
  • Tertiary recycling
  • Waste plastics
  • Zeolites

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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