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纤维素负载的铂和钯纳米颗粒对烯丙基苯氢化反应的催化活性

Catalytic Activity of Cellulose-Supported Platinum and Palladium Nanoparticles for Allylbenzene Hydrogenation.

作者信息

Thiel Tabea Angela, Parapat Riny Yolandha, Schroeter Michael, Schwarze Michael

机构信息

Department of Chemistry, Technische Universität Berlin, TC8, Straße des 17. Juni 124, 10623, Berlin, Germany.

Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059, Rostock, Germany.

出版信息

Chemistry. 2025 Jan 9;31(2):e202402952. doi: 10.1002/chem.202402952. Epub 2024 Dec 12.

DOI:10.1002/chem.202402952
PMID:39587834
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11724257/
Abstract

Platinum and palladium nanoparticles were successfully deposited on tunicate cellulose via the photodeposition or microemulsion deposition method. Evenly distributed, small and narrow-sized particles in the range of 2-3 nm were obtained for microemulsion-prepared cellulose catalysts. The photodeposition method led to larger particle sizes, broader size distribution, and occasional agglomerations. The catalysts were tested in the allylbenzene hydrogenation reaction at room temperature and the results were compared to commercially available catalysts. Because of smaller particles, both microemulsion-prepared catalysts and photodeposited ones show better activity than commercial catalysts. Even platinum and palladium nanoparticles were active for the hydrogenation, only cellulose-supported platinum nanoparticles showed good stability. For palladium nanoparticles, stronger leaching from the surface of cellulose was observed. Cellulose-supported catalysts were recycled, and reusability is comparable to commercial catalysts. Therefore, cellulose could be used as an alternative catalyst support.

摘要

通过光沉积或微乳液沉积法成功地将铂和钯纳米颗粒沉积在被囊动物纤维素上。对于微乳液制备的纤维素催化剂,获得了均匀分布、尺寸在2 - 3纳米范围内的小且窄尺寸的颗粒。光沉积法导致颗粒尺寸更大、尺寸分布更宽且偶尔会出现团聚。在室温下对这些催化剂进行烯丙基苯氢化反应测试,并将结果与市售催化剂进行比较。由于颗粒较小,微乳液制备的催化剂和光沉积催化剂都比商业催化剂表现出更好的活性。即使铂和钯纳米颗粒对氢化反应有活性,但只有纤维素负载的铂纳米颗粒表现出良好的稳定性。对于钯纳米颗粒,观察到从纤维素表面有更强的浸出。纤维素负载的催化剂被回收利用,其可重复使用性与商业催化剂相当。因此,纤维素可作为替代催化剂载体。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/d258db59b062/CHEM-31-e202402952-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/6e0e17c34fda/CHEM-31-e202402952-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/93ee70a06e2a/CHEM-31-e202402952-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/6ffe7695ea9e/CHEM-31-e202402952-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/d258db59b062/CHEM-31-e202402952-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/7587e99263a1/CHEM-31-e202402952-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/801b6ff05358/CHEM-31-e202402952-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/a4cc279e247c/CHEM-31-e202402952-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/c936ed04a09d/CHEM-31-e202402952-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/4b473b4ace97/CHEM-31-e202402952-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/dbdaae8da196/CHEM-31-e202402952-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/6e0e17c34fda/CHEM-31-e202402952-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/93ee70a06e2a/CHEM-31-e202402952-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/6ffe7695ea9e/CHEM-31-e202402952-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b18/11724257/d258db59b062/CHEM-31-e202402952-g003.jpg

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本文引用的文献

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