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Catalytic pyrolysis of wasted fishing net over calcined scallop shells: Analytical Py-GC/MS study
Journal of Analytical and Applied Pyrolysis ( IF 5.8 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.jaap.2019.104750
Nichaboon Chaihad , Irwan Kurnia , Akihiro Yoshida , Chuichi Watanabe , Koji Tei , Prasert Reubroycharoen , Yutaka Kasai , Abuliti Abudula , Guoqing Guan

Abstract Activity of calcined scallop shell (CSS) for the catalytic pyrolysis of wasted fishing net (WFN) to the e-caprolactam monomer was investigated in a micro-furnace type temperature programmable pyrolyzer combined with a gas chromatography/mass spectrometry (Py-GC/MS) analysis system. Evolved gas analysis (EGA/MS) indicates that the peak temperature for the decomposition of WFN in the absence of catalysts was around 420−480 °C whereas the temperature decreased down to 380−420 °C in the presence of CSS or commercial CaO catalysts. The yield of e-caprolactam reached 66 wt.% in a catalytic depolymerization condition at 410 °C for 2 min with a 1:5 WFN/CSS weight ratio by using the Py-GC/MS system. Based on these experimental results, CSS should be an alternative catalyst for the recovery of the e-caprolactam monomer from the WFN.

中文翻译:

在煅烧扇贝壳上对废弃渔网进行催化热解:分析 Py-GC/MS 研究

摘要 在微炉型温度可编程热解器中结合气相色谱/质谱 (Py-GC/Py-GC) 研究了煅烧扇贝壳 (CSS) 对废弃渔网 (WFN) 催化热解为ε-己内酰胺单体的活性。 MS) 分析系统。逸出气体分析 (EGA/MS) 表明,在没有催化剂的情况下,WFN 分解的峰值温度约为 420-480 °C,而在 CSS 或商业 CaO 催化剂存在的情况下,温度下降至 380-420 °C . 通过使用 Py-GC/MS 系统,在 410°C 下催化解聚 2 分钟,WFN/CSS 重量比为 1:5,ε-己内酰胺的产率达到 66 wt.%。基于这些实验结果,CSS 应该是从 WFN 中回收ε-己内酰胺单体的替代催化剂。
更新日期:2020-03-01
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