Production of hydrogen rich products from mixture of polyolefin and PET over different modified ZSM-5 catalysts

Mohammed Al-Asadi, Linda Gombor, N. Miskolczi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The goal of this work was the production of hydrogen rich fraction and high value added products by pyrolysis of waste plastics over zeolite catalysts. The effects of Si/Al ratios: 22.5, 49.1 and 65.5 on product yields were also investigated. Raw materials (polyolefin) and polyethylene terephthalate (PET)) were placed in a horizontal tubular furnace. For pyrolysis, high temperature and nitrogen flow was used. It was found, that the transition metal incorporated into the structure of synthetic zeolite had an advanced effect to the hydrogen yield and isomerization. Acidic catalysts with high Si/Al ratio can also support the decomposition of C-C bonds, maximize the yields of gaseous products and minimize the amount of pyrolysis oil. The maximum hydrogen production (47.0 %) was achieved over Ni/ZSM-5 catalyst. This was happened due to the presence of nickel in the catalyst which increasing the conversion rate. Pyrolysis oil contains high content of aromatic compounds, which was caused by the structure of PET waste and isomerization effect of ZSM-5 catalyst. For hydrogen both the aromatization reactions and the high concentration of unsaturated branched compounds could be blamed.

Original languageEnglish
Pages (from-to)1663-1668
Number of pages6
JournalChemical Engineering Transactions
Volume70
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

Polyethylene Terephthalates
Polyolefins
Polyethylene terephthalates
Hydrogen
Pyrolysis
Catalysts
Zeolites
Isomerization
Oils
Unsaturated compounds
Aromatization
Aromatic compounds
Hydrogen production
Nickel
Catalyst supports
Transition metals
Raw materials
Furnaces
Nitrogen
PL 732

Keywords

  • Hydrogen
  • Metal loaded catalysts
  • PET
  • Polyolefin
  • Pyrolysis
  • Transition metal

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Production of hydrogen rich products from mixture of polyolefin and PET over different modified ZSM-5 catalysts. / Al-Asadi, Mohammed; Gombor, Linda; Miskolczi, N.

In: Chemical Engineering Transactions, Vol. 70, 01.01.2018, p. 1663-1668.

Research output: Contribution to journalArticle

@article{cfa46845afb7458ebd408c912e105c27,
title = "Production of hydrogen rich products from mixture of polyolefin and PET over different modified ZSM-5 catalysts",
abstract = "The goal of this work was the production of hydrogen rich fraction and high value added products by pyrolysis of waste plastics over zeolite catalysts. The effects of Si/Al ratios: 22.5, 49.1 and 65.5 on product yields were also investigated. Raw materials (polyolefin) and polyethylene terephthalate (PET)) were placed in a horizontal tubular furnace. For pyrolysis, high temperature and nitrogen flow was used. It was found, that the transition metal incorporated into the structure of synthetic zeolite had an advanced effect to the hydrogen yield and isomerization. Acidic catalysts with high Si/Al ratio can also support the decomposition of C-C bonds, maximize the yields of gaseous products and minimize the amount of pyrolysis oil. The maximum hydrogen production (47.0 {\%}) was achieved over Ni/ZSM-5 catalyst. This was happened due to the presence of nickel in the catalyst which increasing the conversion rate. Pyrolysis oil contains high content of aromatic compounds, which was caused by the structure of PET waste and isomerization effect of ZSM-5 catalyst. For hydrogen both the aromatization reactions and the high concentration of unsaturated branched compounds could be blamed.",
keywords = "Hydrogen, Metal loaded catalysts, PET, Polyolefin, Pyrolysis, Transition metal",
author = "Mohammed Al-Asadi and Linda Gombor and N. Miskolczi",
year = "2018",
month = "1",
day = "1",
doi = "10.3303/CET1870278",
language = "English",
volume = "70",
pages = "1663--1668",
journal = "Chemical Engineering Transactions",
issn = "1974-9791",
publisher = "AIDIC-Italian Association of Chemical Engineering",

}

TY - JOUR

T1 - Production of hydrogen rich products from mixture of polyolefin and PET over different modified ZSM-5 catalysts

AU - Al-Asadi, Mohammed

AU - Gombor, Linda

AU - Miskolczi, N.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The goal of this work was the production of hydrogen rich fraction and high value added products by pyrolysis of waste plastics over zeolite catalysts. The effects of Si/Al ratios: 22.5, 49.1 and 65.5 on product yields were also investigated. Raw materials (polyolefin) and polyethylene terephthalate (PET)) were placed in a horizontal tubular furnace. For pyrolysis, high temperature and nitrogen flow was used. It was found, that the transition metal incorporated into the structure of synthetic zeolite had an advanced effect to the hydrogen yield and isomerization. Acidic catalysts with high Si/Al ratio can also support the decomposition of C-C bonds, maximize the yields of gaseous products and minimize the amount of pyrolysis oil. The maximum hydrogen production (47.0 %) was achieved over Ni/ZSM-5 catalyst. This was happened due to the presence of nickel in the catalyst which increasing the conversion rate. Pyrolysis oil contains high content of aromatic compounds, which was caused by the structure of PET waste and isomerization effect of ZSM-5 catalyst. For hydrogen both the aromatization reactions and the high concentration of unsaturated branched compounds could be blamed.

AB - The goal of this work was the production of hydrogen rich fraction and high value added products by pyrolysis of waste plastics over zeolite catalysts. The effects of Si/Al ratios: 22.5, 49.1 and 65.5 on product yields were also investigated. Raw materials (polyolefin) and polyethylene terephthalate (PET)) were placed in a horizontal tubular furnace. For pyrolysis, high temperature and nitrogen flow was used. It was found, that the transition metal incorporated into the structure of synthetic zeolite had an advanced effect to the hydrogen yield and isomerization. Acidic catalysts with high Si/Al ratio can also support the decomposition of C-C bonds, maximize the yields of gaseous products and minimize the amount of pyrolysis oil. The maximum hydrogen production (47.0 %) was achieved over Ni/ZSM-5 catalyst. This was happened due to the presence of nickel in the catalyst which increasing the conversion rate. Pyrolysis oil contains high content of aromatic compounds, which was caused by the structure of PET waste and isomerization effect of ZSM-5 catalyst. For hydrogen both the aromatization reactions and the high concentration of unsaturated branched compounds could be blamed.

KW - Hydrogen

KW - Metal loaded catalysts

KW - PET

KW - Polyolefin

KW - Pyrolysis

KW - Transition metal

UR - http://www.scopus.com/inward/record.url?scp=85051440472&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85051440472&partnerID=8YFLogxK

U2 - 10.3303/CET1870278

DO - 10.3303/CET1870278

M3 - Article

AN - SCOPUS:85051440472

VL - 70

SP - 1663

EP - 1668

JO - Chemical Engineering Transactions

JF - Chemical Engineering Transactions

SN - 1974-9791

ER -