pd负载CeO2催化剂在无溶剂有氧氧化条件下选择性氧化苯甲醇制苯甲醛

IF 0.8 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
N. Suryam, T. Jagadish, T. Krishna, Anitha R.S.D, S. Swapna, C. Rakesh, D. Mallesh, K. Laxma Reddy
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引用次数: 0

摘要

在本研究中,采用平均尺寸为5nm的简单浸渍工艺,在CeO2载体上以不同的重量百分比(1 ~ 4wt %)制备了均质PdNPs。此外,还研究了均相PdNPs在无溶剂氧化技术下将苯甲醇(BA)选择性氧化为苯甲醛(BZA)。利用P-XRD、TEM、XPS等多种技术对制备的Pd/CeO2非均相纳米催化剂进行了深入研究。在不同的Pd负载下,3wt % (3Pd/CeO2)催化剂对BA氧化成BZA的催化活性增强,BA转化率是纯CeO2的9.5倍。此外,还对温度、催化剂重量、反应时间和催化剂可回收性的影响进行了实验研究。对于3Pd/CeO2,苯甲醇转化率最高(95%),苯甲醛选择性最高(99%),苯甲醛收率最高(94%)。3Pd/CeO2催化剂不仅表现出优异的催化活性,而且在可回收过程中表现出稳定的活性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Selective Oxidation of Benzyl Alcohol to Benzaldehyde under Solvent Free Aerobic Oxidation Condition Using Pd-Supported CeO2 Catalyst

Selective Oxidation of Benzyl Alcohol to Benzaldehyde under Solvent Free Aerobic Oxidation Condition Using Pd-Supported CeO2 Catalyst

In this research, the homogenous PdNPs were developed with varying weight percentages (1 to 4 wt %) on the CeO2 support using a simple impregnation process with a mean size of 5 nm. Furthermore, homogenous PdNPs were examined for the selective oxidation of benzyl alcohol (BA) to benzaldehyde (BZA) in a solvent-free oxidation technique. The developed Pd/CeO2 heterogeneous nanocatalysts were thoroughly studied utilizing various techniques such as P-XRD, TEM, and XPS analysis. Among various Pd loadings, 3 wt % (3Pd/CeO2) catalysts exhibit enhanced catalytic activity for the BA to BZA oxidation process, with 9.5 times greater BA conversion than bare CeO2. Additionally, experiments were conducted to determine the effect of temperature, catalyst weight, reaction time, and catalyst recyclability. The highest benzyl alcohol conversion (95%), benzaldehyde selectivity (99%) and benzaldehyde yield (94%) achieved for 3Pd/CeO2. The 3Pd/CeO2 catalyst not only exhibited superior catalytic activity, but also showed stable activity during recyclability.

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来源期刊
CiteScore
1.40
自引率
22.20%
发文量
252
审稿时长
2-4 weeks
期刊介绍: Russian Journal of General Chemistry is a journal that covers many problems that are of general interest to the whole community of chemists. The journal is the successor to Russia’s first chemical journal, Zhurnal Russkogo Khimicheskogo Obshchestva (Journal of the Russian Chemical Society ) founded in 1869 to cover all aspects of chemistry. Now the journal is focused on the interdisciplinary areas of chemistry (organometallics, organometalloids, organoinorganic complexes, mechanochemistry, nanochemistry, etc.), new achievements and long-term results in the field. The journal publishes reviews, current scientific papers, letters to the editor, and discussion papers.
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