聚烯废弃物在低温上循环转化为H2燃料,采用一种新的双重热水工艺
Hongcai Su1, Dan Xu1, Tian Li1
1State Key Laboratory of Clean Energy Utilization, Zhejiang University, Zheda Road 38, Hangzhou, 310027, China.
ChemSusChem
|October 8, 2023
概括
本研究提出了一种两步方法,将聚烯塑料废弃物转化为燃料. 这种清洁和温和的工艺有效地产生,残留量最小,为塑料废物管理提供可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续化学 可持续化学
背景情况:
- 塑料废物,特别是像聚烯 (PP) 这样的聚烯,是生产 (H) 的丰富资源.
- 传统的热化学方法用于将塑料废物再循环转化为H2通常需要高能量投入和恶劣的反应条件.
- 需要更温和,更清洁,更可持续的途径来将PP废物转化为有价值的燃料.
研究的目的:
- 为选择性回收聚烯 (PP) 废弃物转化为 (H2) 燃料制定一项新的协同战略.
- 为了在温和干净的反应条件下实现这种转化.
- 通过高效的H2生产,提高塑料废物处理过程的可持续性.
主要方法:
- 采用了两步的双重过程,首先是使用190°C的纯氧氧气氧化PP废物,以形成小分子有机酸.
- 然后,由此产生的水性氧化产品在300°C的温度下,在ZnO修饰的Ru/NiAl2O4催化剂上进行了催化改革.
- 该工艺旨在最大限度地减少固体残留物和设备污染.
主要成果:
- 双重战略成功地将PP废物转化为H2燃料.
- 实现了 44.5 mol/kg 的高 H2产量.
- 生产的H2气体的高分子分数为60.5%,固体残留最小,反应系统运行干净.
结论:
- 报告的双重战略为将聚烯废物转化为燃料提供了一个高效和温和的途径.
- 这种方法通过将废物再循环转化为有价值的能源,显著提高了塑料废物管理的可持续性.
- 该过程表明了低温塑料转化和更清洁的能源生产的潜力.
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