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钯纳米颗粒修饰到双胍改性的KIT-5介孔结构中：一种用于超声辅助铃木-宫浦交叉偶联的可回收纳米催化剂。

Palladium nanoparticles decorated into a biguanidine modified-KIT-5 mesoporous structure: a recoverable nanocatalyst for ultrasound-assisted Suzuki-Miyaura cross-coupling.

作者信息

Veisi Hojat, Mirzaei Amin, Mohammadi Pourya

机构信息

Department of Chemistry, Payame Noor University Tehran Iran

出版信息

RSC Adv. 2019 Dec 16;9(71):41581-41590. doi: 10.1039/c9ra08809a. eCollection 2019 Dec 13.

DOI:10.1039/c9ra08809a
PMID:35541600
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9076557/
Abstract

In the current research work, a new KIT-5-biguanidine-Pd(0) catalyst was prepared and applied to ultrasound-assisted Suzuki-Miyaura cross-coupling reactions using ultrasound waves at ambient temperature. The ultrasound-assisted method is a green and efficient method for C-C coupling. Many parameters of the Suzuki coupling reaction were examined, such as the irradiation time, the types of organic and inorganic bases, the types of aprotic and protic solvents, and the dosage (mol%) of catalyst. Also, the results showed that the yields from the ultrasound-assisted coupling reactions were higher than from non-irradiated reactions. The prepared catalyst was characterized HR-TEM, SEM-EDX-mapping, FT-IR, ICP-AAS, BET-BJH, and XRD studies. The stability and catalytic performance of the prepared catalyst were good, and it could be reused 6 times without catalytic activity loss for the Suzuki-Miyaura cross-coupling reaction.

摘要

在当前的研究工作中，制备了一种新型的KIT-5-双胍-Pd(0)催化剂，并将其应用于室温下利用超声波的超声辅助铃木-宫浦交叉偶联反应。超声辅助方法是一种用于碳-碳偶联的绿色高效方法。考察了铃木偶联反应的许多参数，如辐照时间、有机和无机碱的类型、非质子和质子溶剂的类型以及催化剂的用量（摩尔%）。此外，结果表明，超声辅助偶联反应的产率高于未辐照反应的产率。通过高分辨透射电子显微镜（HR-TEM）、扫描电子显微镜-能谱-映射（SEM-EDX-mapping）、傅里叶变换红外光谱（FT-IR）、电感耦合等离子体原子发射光谱（ICP-AAS）、比表面积-孔径分布（BET-BJH）和X射线衍射（XRD）研究对所制备的催化剂进行了表征。所制备催化剂的稳定性和催化性能良好，在铃木-宫浦交叉偶联反应中可重复使用6次而不损失催化活性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/68441cb81dbb/c9ra08809a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/eb011b0e03bf/c9ra08809a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/5e07c86c8540/c9ra08809a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/131b7e3668ef/c9ra08809a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/c35387373886/c9ra08809a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/f967159b67b7/c9ra08809a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/88bf9f45f27f/c9ra08809a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/a8df82996855/c9ra08809a-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/68441cb81dbb/c9ra08809a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/eb011b0e03bf/c9ra08809a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/5e07c86c8540/c9ra08809a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/131b7e3668ef/c9ra08809a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/c35387373886/c9ra08809a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/f967159b67b7/c9ra08809a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/88bf9f45f27f/c9ra08809a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/a8df82996855/c9ra08809a-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7c/9076557/68441cb81dbb/c9ra08809a-f6.jpg

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