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在AuPd/ZrO₂中的氧空隙诱导的金属支相互作用,用于促进5-氧甲基酸氧化作用的催化剂

Yao Chen¹, Lu Sun¹, Yiwang Li²

¹School of the Environment and Safety, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, P. R. China.

Inorganic chemistry

|September 1, 2023

概括

这项研究开发了一种新的AuPd/ZrO2@HNT催化剂,具有增强的氧气空缺,用于高效的生物质升级. 催化剂从5-基甲基黄中获得了99.5%的2,5-基酸产量,证明了其可持续化学生产的潜力.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
绿色化学绿色化学

背景情况:

强大的金属支相互作用是生物质升级中纳米催化剂性能的关键.
开发有效的催化剂来转化生物质衍生平台化学物质对于可持续化学至关重要.

研究的目的:

设计和合成具有增强氧空位 (Ov) 的新型AuPd/ZrO2@HNTs-zCA催化剂.
研究这些催化剂的催化性能,以使5-基甲基 (HMF) 氧化为2,5-基酸 (FDCA).

主要方法:

酸 (CA) 辅助合成ZrO2层,在化酸纳米管 (HNT) 上增强Ov.
将AuPd双金属纳米粒子加载到修改后的支架上.
在受控氧气压下使用水作为溶剂的HMF的有氧氧化.

主要成果:

Au3Pd1/ZrO2@HNTs-1.0CA催化剂实现了99.5%的FDCA产量和1057.9mmol·g-1·h-1.0的高形成率.
在ZrO2中提高Ov度改善了O2吸附/激活和基质结合.
AuPd纳米粒子和AuPd-ZrO2接口的协同效应促进了催化活性.

结论:

设计的催化剂对HMF氧化表现出色,这是由于强烈的金属支相互作用和氧气空缺造成的.
这项工作提供了设计氧化物支持的贵金属催化剂的洞察力,用于生物质升级.
该研究强调了Ov丰富的接口对于高效的生物质平台化学转换的潜力.

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