研究低温氧化青烯的机制
Zhengchong Zhao1,2, Haiyang Yang1,2,3,4, Jingjing He1
1School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China.
Molecules (Basel, Switzerland)
|July 29, 2023
概括
使用化和过氧化低温氧化重油,改变了它们的结构. 这个过程产生了有价值的可溶性成分,并增强了不可溶性成分,提高了重油加工的利能力.
科学领域:
- 石油化学 石油化学
- 有机化学 有机化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 青是复杂的重油成分,会给加工带来挑战.
- 开发高效的青升级方法对于重油加工企业的利能力至关重要.
- 低温氧化为青烯的修饰提供了一个潜在的途径.
研究的目的:
- 用酸和过氧化混合物研究低温氧化.
- 描述氧化产品并了解反应机制.
- 评估这种技术在重油加工方面的潜力.
主要方法:
- 从重油中提取青.
- 在50°C的低温氧化,使用酸和过氧化.
- 使用元素分析,红外分析,质子核磁共振和气体色谱仪/质谱仪进行表征.
- 氧化产品分离成甲醇可溶性和不可溶性物质.
- 分子动力学模拟以了解反应促进.
主要成果:
- 氧化包括添加氧气,侧链裂变和凝结反应.
- 产品包括28%的甲醇可溶性物质 (脂肪酸,,低凝结芳香物质) 和72%的甲醇不溶性物质.
- 甲醇不溶性物体的芳香环凝结度略有增加,但保留了一些长的基链.
- 分子动力学模拟证实酸促进了青氧化.
结论:
- 低温氧化有效地改变了青结构,产生了有价值的可溶性分数.
- 该过程在不溶性物质中稍微增加了芳香凝结,同时保持了一些异形性质.
- 这种氧化技术提供了一个可行的策略,以提高重油加工和利能力.
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