✦ LIBER ✦

Dehydrochlorination behavior of flexible PVC pellets in NaOH solutions at elevated temperature

✍ Scribed by Shun-Myung Shin; T. Yoshioka; A. Okuwaki

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 256 KB
Volume: 67
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19980328)67:13<2171::aid-app7>3.0.co;2-b

No coin nor oath required. For personal study only.

✦ Synopsis

Flexible PVC pellets were treated at 150-250ЊC in 0-7M NaOH solutions for 0-12 h. The degree of dehydrochlorination of flexible PVC pellets increased with increasing reaction temperature and was about 100% at 250ЊC over 5 h. A porous char, 2-16 mm in pore size, was produced. The dehydrochlorination of PVC in the flexible PVC was proceeded by a first-order reaction in alkaline solution. The maximum rate of the dehydrochlorination for flexible PVC was reached at 5M NaOH. The apparent activation energies were 22-35 kcal/mol in 1-7 M NaOH for flexible PVC.

📜 SIMILAR VOLUMES

Chemical recycling of flexible PVC by ox

Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures

✍ T. Yoshioka; K. Furukawa; T. Sato; A. Okuwaki 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 149 KB 👁 2 views

Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)-H 2 O NaOH solutions, at 150 -260°C and P O 2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of benzenecarboxylic acids,