REAL

Pyrolysis of wood – PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC

Czégény, Zsuzsanna and Jakab, Emma and Bozi, János and Blazsó, Marianne (2015) Pyrolysis of wood – PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC. Journal of Analytical and Applied Pyrolysis , 113. pp. 123-132. ISSN 0165-2370

[img]
Preview
Text
JAAP_2015_WoodPVC_Real.pdf

Download (1633Kb) | Preview

Abstract

Thermal decomposition of polyvinylchloride (PVC) – wood and wood component mixtures were examined under slow and fast heating by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and thermogravimetry/mass spectrometry(TG/MS) techniques in order to clarify the chemical interaction of biomass materials and PVC during thermal decomposition. A hardwood and a softwood (beech and pine), their lignin and two types of cellulose (Avicel and Whatman) were chosen as natural polymer components. Comparing the gaseous and liquid pyrolysis products of pure samples to those of mixtures it was found that considerably lower amount of several reactive compounds have been produced when the biomass sample was mixed with PVC. On the other hand significant amount of chloromethane appeared in the pyrolysate of wood and lignin samples mixed with PVC under fast and slow pyrolysis conditions as well, but only in traces of chlorinated organic compounds were detected from cellulose mixtures. It was concluded that the methoxy groups at phenolic rings in lignin are the methyl source of chloromethane formation, and this reaction consumed most of the HCl evolved from PVC.

Item Type: Article
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD01 Analytical chemistry / analitikai kémia
Depositing User: Dr Zsuzsanna Czégény
Date Deposited: 14 Sep 2015 14:22
Last Modified: 14 Sep 2015 14:22
URI: http://real.mtak.hu/id/eprint/26599

Actions (login required)

View Item View Item