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纳米催化剂 Cu/介孔碳的合成与表征及其在醇类酰胺化反应中的应用。

Synthesis and characterization of nanocatalyst Cu/mesoporous carbon for amidation reactions of alcohols.

机构信息

Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran.

出版信息

Sci Rep. 2023 Jun 22;13(1):10133. doi: 10.1038/s41598-023-36521-6.

DOI:10.1038/s41598-023-36521-6
PMID:37349381
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10287763/
Abstract

In this research, mesoporous carbon (MC) with high efficiency (0.65 g yield from 1.0 g MCM-41 and 1.25 g sucrose) was successfully prepared by adding carbon precursor (sucrose) in a single step with ultrasonic waves, which reduces time and energy cost. Then, the Cu/Mesoporous carbon nanocatalyst (Cu/MC) was synthesized by adding Cu(NO) in a single step and applied as a catalyst in amidation reactions of alcohols. Also, Cu/MC was characterized using different spectroscopic methods and techniques, including Fourier transform infrared spectroscopy (FT-IR), Field Emission Scanning Electron Microscopy (FE-SEM), N adsorption analysis (BET), X-ray diffraction analysis (XRD), Energy Dispersive X-ray (EDX), and Thermogravimetric Analysis (TGA). Moreover, to show the catalytic merits of Cu/MC, various primary and secondary amines and ammonium salts were applied in the amidation of alcohols. Easy synthesis method, recyclability, excellent yields (80-93%), and simple work-up are some noticeable strengths of using Cu/MC as a catalyst in this reaction.

摘要

在这项研究中，通过在超声作用下一步添加碳前体（蔗糖），成功制备了高效的介孔碳（MC）（1.0 g MCM-41 和 1.25 g 蔗糖的产率为 0.65 g），从而降低了时间和能源成本。然后，通过一步添加 Cu(NO)合成了 Cu/介孔碳纳米催化剂（Cu/MC），并将其用作醇的酰胺化反应中的催化剂。此外，使用不同的光谱方法和技术对 Cu/MC 进行了表征，包括傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FE-SEM）、N 吸附分析（BET）、X 射线衍射分析（XRD）、能谱（EDX）和热重分析（TGA）。此外，为了展示 Cu/MC 的催化优点，在醇的酰胺化反应中使用了各种伯胺和仲胺以及季铵盐。使用 Cu/MC 作为催化剂的优点包括：合成方法简单、可回收、产率高（80-93%）、后处理简单。

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