Functionalized silica gel containing quaternary ammonium cations and salicylaldehyde chelation groups on surface

Functionalized silica gel containing quaternary ammonium cations and salicylaldehyde chelation groups on surface

The invention discloses functionalized silica gel containing quaternary ammonium cations and salicylaldehyde chelation groups on the surface. Based on a molecular design principle, 3-(N, N-dialkyl amine propyl) trialkoxysilane is adopted as an organic silane coupling agent, 5-chloro methyl salicylic...

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Hauptverfasser: XU RU, WANG MINGYAN, LI JINGHAO, ZHANG KEREN, ZHANG TIANLIN, LYU YONGCHUN, YUE XIADAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Zusammenfassung:The invention discloses functionalized silica gel containing quaternary ammonium cations and salicylaldehyde chelation groups on the surface. Based on a molecular design principle, 3-(N, N-dialkyl amine propyl) trialkoxysilane is adopted as an organic silane coupling agent, 5-chloro methyl salicylic aldehyde is taken as a specific functionalized reagent, and quaternary ammonium cations and salicylaldehyde chelation groups are introduced to the surface of the silica gel by a chemical reaction so as to form the functionalized silica gel containing the quaternary ammonium cations and the salicylaldehyde chelation groups on the surface. Accordingly, the functionalized silica gel has the characteristics of anion and cation exchange and selective chelate adsorption of heavy metal ions.