Articles with "pyridine modified" as a keyword



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Synthesis, characterisation and application of pyridine-modified chitosan derivatives for the first non-racemic Cu-catalysed Henry reaction.

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Published in 2018 at "Carbohydrate polymers"

DOI: 10.1016/j.carbpol.2017.12.012

Abstract: The preparation, characterisation and application of two pyridine-modified chitosan derivatives (C1 and C2) containing Cu(OAc)2 adsorbed as catalysts for the conversion of benzaldehyde into 2-nitro-1-phenylethanol are described. Quantitative solid-state 13C multiple-contact cross-polarization, magic-angle-spinning, nuclear magnetic… read more here.

Keywords: characterisation application; chitosan derivatives; modified chitosan; reaction ... See more keywords
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Characterizing Oligomeric Hydroxyl Silicon Oils by MALDI-TOF MS With the Pyridine-Modified Matrix

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Published in 2021 at "Frontiers in Chemistry"

DOI: 10.3389/fchem.2021.755174

Abstract: Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF) is a powerful technique for analysis of various polymers, but it is still very difficult to characterize silicone oil due to its poor ionization efficiency. In this… read more here.

Keywords: hydroxyl silicon; oligomeric hydroxyl; pyridine modified; hydroxyl silicone ... See more keywords
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Effective Removal of Fe (III) from Strongly Acidic Wastewater by Pyridine-Modified Chitosan: Synthesis, Efficiency, and Mechanism

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Published in 2023 at "Molecules"

DOI: 10.3390/molecules28083445

Abstract: A novel pyridine-modified chitosan (PYCS) adsorbent was prepared in a multistep procedure including the successive grafting of 2-(chloromethyl) pyridine hydrochloride and crosslinking with glutaraldehyde. Then, the as-prepared materials were used as adsorbents for the removal… read more here.

Keywords: adsorption; spectroscopy; pyridine modified; acidic wastewater ... See more keywords