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磁性可回收的二氧化硅修饰的铁磁纳米氧化铈纳米催化剂及其在无溶剂条件下用于α-和β-丁氧基羰基化反应的应用

Magnetically Recoverable Silica-Decorated Ferromagnetic-Nanoceria Nanocatalysts and Their Use with - and -Butyloxycarbonylation Reaction via Solvent-Free Condition.

作者信息

Patil Shripad M, Tandon Runjhun, Tandon Nitin

机构信息

Department of Chemistry, School of Chemical Engineering and Physical Science, Lovely Professional University, Phagwara, 144411, Punjab India.

出版信息

ACS Omega. 2022 Jul 7;7(28):24190-24201. doi: 10.1021/acsomega.2c01107. eCollection 2022 Jul 19.

DOI:10.1021/acsomega.2c01107
PMID:35874196
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9301736/
Abstract

Silica-decorated ferrite nanoparticles, a new kind, coated with ceric ammonium nitrate (CAN), have been prepared successfully by simple coprecipitation techniques. Powder X-ray diffraction spectroscopy (PXRD), Fourier transform-infrared spectroscopy (FT-IR), field emission-scanning electron microscope (FE-SEM), wavelength-dispersive X-ray spectroscopy (WDX), energy-dispersive spectroscopy (EDS), inductive coupled plasma-optical emission spectroscopy (ICP-OES), and thermogravimetric analysis (TGA) techniques were used to characterize these nanoparticles. The catalysts are further studied for catalytic activity in solvent-free conditions. Importantly, these nanoparticles have been collected from the reaction mixture using an external magnet and recycled up to minimum of 15 cycles with no substantial loss of catalytic characteristics.

摘要

一种新型的二氧化硅修饰铁氧体纳米颗粒，表面包覆有硝酸铈铵（CAN），已通过简单的共沉淀技术成功制备。采用粉末X射线衍射光谱（PXRD）、傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FE-SEM）、波长色散X射线光谱（WDX）、能量色散光谱（EDS）、电感耦合等离子体发射光谱（ICP-OES）和热重分析（TGA）技术对这些纳米颗粒进行了表征。对这些催化剂在无溶剂条件下的催化活性进行了进一步研究。重要的是，这些纳米颗粒已使用外部磁铁从反应混合物中收集，并循环使用多达至少15次，催化特性无明显损失。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/a2e4da2b291e/ao2c01107_0007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/2b4557730fb5/ao2c01107_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/fc055b3a7df0/ao2c01107_0006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/a2e4da2b291e/ao2c01107_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/2a0f66a7435d/ao2c01107_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/fcc54fa9ff39/ao2c01107_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/1258f6252db0/ao2c01107_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/634e6317471c/ao2c01107_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/38518b874c2c/ao2c01107_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/2b4557730fb5/ao2c01107_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/fc055b3a7df0/ao2c01107_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/f25eefb92601/ao2c01107_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/d8134c7de49a/ao2c01107_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/1a87f554ec65/ao2c01107_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/cc29c96072a0/ao2c01107_0012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/87a0217b557b/ao2c01107_0013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f20/9301736/a2e4da2b291e/ao2c01107_0007.jpg

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