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可还原的氧化钨（VI）负载钌（0）纳米颗粒：用于氨硼烷水解脱氢的高活性催化剂。

Reducible tungsten(VI) oxide-supported ruthenium(0) nanoparticles: highly active catalyst for hydrolytic dehydrogenation of ammonia borane.

作者信息

Akbayrak Serdar, Tonbul Yalçın, Özkar Saim

机构信息

Department of Basic Sciences, Faculty of Engineering, Necmettin Erbakan University, Konya, Turkiye.

Ziya Gökalp Faculty of Education, Dicle University, Diyarbakır, Turkiye.

出版信息

Turk J Chem. 2023 Sep 28;47(5):1224-1238. doi: 10.55730/1300-0527.3607. eCollection 2023.

DOI:10.55730/1300-0527.3607
PMID:38173757
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10762867/
Abstract

Reducible WO powder with a mean diameter of 100 nm is used as support to stabilize ruthenium(0) nanoparticles. Ruthenium(0) nanoparticles are obtained by NaBH reduction of ruthenium(III) precursor on the surface of WO support at room temperature. Ruthenium(0) nanoparticles are uniformly dispersed on the surface of tungsten(VI) oxide. The obtained Ru/WO nanoparticles are found to be active catalysts in hydrolytic dehydrogenation of ammonia borane. The turnover frequency (TOF) values of the Ru/WO nanocatalysts with the metal loading of 1.0%, 2.0%, and 3.0% wt. Ru are 122, 106, and 83 min, respectively, in releasing hydrogen gas from the hydrolysis of ammonia borane at 25.0 °C. As the Ru/WO (1.0% wt. Ru) nanocatalyst with an average particle size of 2.6 nm provides the highest activity among them, it is extensively investigated. Although the Ru/WO (1.0% wt. Ru) nanocatalyst is not magnetically separable, it has extremely high reusability in the hydrolysis reaction as it preserves 100% of initial catalytic activity even after the 5th run of hydrolysis. The high activity and reusability of Ru/WO (1.0% wt. Ru) nanocatalyst are attributed to the favorable metal-support interaction between the ruthenium(0) nanoparticles and the reducible tungsten(VI) oxide. The high catalytic activity and high stability of Ru/WO nanoparticles increase the catalytic efficiency of precious ruthenium in hydrolytic dehydrogenation of ammonia borane.

摘要

平均直径为100纳米的可还原氧化钨粉末用作载体，以稳定零价钌纳米颗粒。零价钌纳米颗粒是通过在室温下用硼氢化钠还原氧化钨载体表面的三价钌前驱体制备得到的。零价钌纳米颗粒均匀地分散在氧化钨表面。所得到的钌/氧化钨纳米颗粒被发现是氨硼烷水解脱氢反应中的活性催化剂。在25.0℃下氨硼烷水解释放氢气时，金属负载量为1.0%、2.0%和3.0%（重量）钌的钌/氧化钨纳米催化剂的转化频率（TOF）值分别为122、106和83 min⁻¹。由于平均粒径为2.6纳米的钌/氧化钨（1.0%重量钌）纳米催化剂在其中具有最高活性，因此对其进行了广泛研究。尽管钌/氧化钨（1.0%重量钌）纳米催化剂不能通过磁力分离，但它在水解反应中具有极高的可重复使用性，因为即使在第5次水解运行后，它仍保持100%的初始催化活性。钌/氧化钨（1.0%重量钌）纳米催化剂的高活性和可重复使用性归因于零价钌纳米颗粒与可还原氧化钨之间良好的金属-载体相互作用。钌/氧化钨纳米颗粒的高催化活性和高稳定性提高了贵金属钌在氨硼烷水解脱氢反应中的催化效率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/cc08a7198f92/turkjchem-47-5-1224f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/879798221ca6/turkjchem-47-5-1224f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/4f93a7bbcb4d/turkjchem-47-5-1224f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/e482a5e433d1/turkjchem-47-5-1224f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/a3a97b26b3b1/turkjchem-47-5-1224f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/e970119824b1/turkjchem-47-5-1224f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/404fae20e462/turkjchem-47-5-1224f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/2ad686b049d6/turkjchem-47-5-1224f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/cc08a7198f92/turkjchem-47-5-1224f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/879798221ca6/turkjchem-47-5-1224f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/4f93a7bbcb4d/turkjchem-47-5-1224f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/e482a5e433d1/turkjchem-47-5-1224f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/a3a97b26b3b1/turkjchem-47-5-1224f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/e970119824b1/turkjchem-47-5-1224f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/404fae20e462/turkjchem-47-5-1224f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/2ad686b049d6/turkjchem-47-5-1224f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/10762867/cc08a7198f92/turkjchem-47-5-1224f8.jpg

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