Catalytic pyrolysis of nylon-6 to recover caprolactam

被引：69

作者：

Czernik, S ^{[1
]}

Elam, CC ^{[1
]}

Evans, RJ ^{[1
]}

Meglen, RR ^{[1
]}

Moens, L ^{[1
]}

Tatsumoto, K ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 1998年 / 46卷 / 01期

关键词：

nylon-6; caprolactam; depolymerization; catalytic pyrolysis; molecular-beam mass-spectrometry; fluidized bed reactor; plastics recycling;

D O I：

10.1016/S0165-2370(98)00068-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Catalytic pyrolysis has been proposed as a possible process for the recovery of caprolactam from waste nylon-6. Promising process conditions, i.e. catalyst and temperature were identified using a micro-scale reactor/molecular-beam mass-spectrometer system. At 330-360 degrees C, in the presence of alpha-alumina supported KOH, the reaction proceeded at a high rate and selectivity. Only a few minutes were needed to complete the nylon-6 depolymerization with a caprolactam yield of 85%. These results were confirmed in a bench-scale fluidized bed reactor system. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：51 / 64

页数：14

共 21 条

[1] CATALYTIC THERMAL-DEGRADATION OF POLYMERS DEGRADATION OF POLYPROPYLENE [J].