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Updated: Jul 30, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
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Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area

Published on: February 19, 2018

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磁性树脂-甲支持-DABCO作为一个有效和可回收的纳米催化剂

Somayeh Abaeezadeh1, Dawood Elhamifar2

  • 1Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran.

Scientific reports
|July 1, 2025
PubMed
概括

一种新的磁纳米复合材料Fe3O4@RF/DABCO,在Knoevenagel凝结反应中显示出高效率和选择性. 这种可重复使用的催化剂在室温无溶剂条件下有效运行.

关键词:
我们知道Nagel凝结.磁性复星醇-甲基甲磁性复星醇-甲基甲可以回收的纳米催化剂.支持-DABCO提供支持

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相关概念视频

¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...