摘要
利用聚氯乙烯(PVC)与氧化亚镍混合物(质量混合比10∶1)中的PVC在氩气气氛低于673K温度条件下释放出的氯化氢作为氯化剂氯化氧化亚镍,并通过氧化焙烧激活氧化亚镍的反应活性促进氯化反应,将氧化亚镍的氯化率由30%提高至95%,表明聚氯乙烯在低温下可以作为氯化剂氯化氧化亚镍。利用TG-DTA测试恒定升温速率(10~40K/min)条件下失重率随温度的变化规律,分析了PVC与氧化亚镍反应动力学。得出PVC+NiO反应体系的表观活化能为96kJ/mol,略小于纯PVC裂解的表观活化能114kJ/mol。
Nickel monoxide was chloridized with hydrogen chloride as chlorinating agent produced by thermal pyrolysis of PVC at temperature of 673 Kbelow in Ar atmosphere by heating the homogeneous mixture of PVC and nickel oxide with mass ratio of 10∶1.Reactivity of NiO was activated by roasting NiO in air to improve chlorination ratio of NiO from 35%to 95%.The results suggest that PVC is capable of chloridizing nickel oxide at low temperatures.The kinetics was investigated by heating the mixture at constant heating rate ranging from 10 to 40K/min with TG-DTA.Apparent activation energy is 96kJ/mol for PVC＋NiO,slightly lower than that of 114kJ/mol for pure PVC by applying non-isothermal kinetic model.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第4期58-63,共6页
Nonferrous Metals（Extractive Metallurgy)
关键词
氧化镍
PVC
氯化
热裂解
动力学
nickel oxide
PVC
chlorination
thermal pyrolysis
dynamics
