在Ni(OH)2上进行产品连接物修饰,以促进芳香醇的电催化氧化
Lijun Wang1, Jiabiao Yan1, Kai Shi1
1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, ECNU Engineering Center For Sustainable Carbon, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.
一个新的产品联体修饰策略增强了氧化电催化剂,用于将芳香醇转化为有价值的酸. 这种方法提高了催化活性和反应物相互作用,实现了高产量和生物质转化纯度.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 开发高效的电催化剂用于生物质价值化至关重要.
- 氧化 (Ni(OH) 2) 是具有成本效益的,但由于缓慢的NiOOH形成和弱反应物相互作用,其活性较低.
- 需要一种新的策略来改善电氧化中的Ni (OH) 2性能.
研究的目的:
- 引入和验证一种"产品连接物修饰" (PLM) 策略,用于增强Ni(OH) 2电催化剂.
- 改进Ni (II) /Ni (III) 氧化还原动力学和反应剂在催化剂表面的吸附.
- 为了证明PLM在电氧化芳香醇到增值酸的有效性.
主要方法:
- 用分子接体 (产物接体) 修改Ni(OH) 2.
- 使用修改的Ni(OH) 2催化剂,对芳香醇进行电催化氧化.
- 催化剂性能的表征,包括转换率,选择性,产量和法拉第效率.
- 在流电解仪中进行长期稳定性测试.
主要成果:
- 该PLM策略显著提高了电催化性能.
- 经过FDCA修改的Ni(OH) 2 (FDCA-Ni(OH) 2) 显示了>99.4%的BHMF转换率,99.2%的FDCA选择性,98.6%的产量和99.0%的法拉第效率.
- 在流电解仪中,FDCA-Ni(OH) 2表现出极好的稳定性 (>250小时),产生高纯度的FDCA (>99.0%).
结论:
- PLM策略有效地提高了Ni(OH) 2电催化剂的活性和稳定性.
- 这种方法通过改进的氧化还原动力学和反应剂丰富,促进了芳香反应物的向转化.
- PLM为有效的生物质衍生芳香醇价值化提供了一个有前途的途径.
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