Surface-modified silica gel and preparation method and application thereof

• Main Authors: LI LANTING, WANG CHUAN, PENG ZHENLEI, ZHANG YUHONG
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; PREPARATION OF CARBON BLACK; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

The invention provides surface-modified silica gel and a preparation method and application thereof, and relates to the technical field of separation and analysis. The surface-modified silica gel is silica gel of which the surface is modified with carbobenzoxy; silica gel is used as a substrate, and the surface of the silica gel is bonded with a carbobenzoxy functional group at a phase tail end. According to the surface-modified silica gel, surface amination is performed on activated silica gel, reacting the silica gel subjected to surface amination reacts with a surface modifier containing carbobenzoxy, and centrifuging is performed to obtain carbobenzoxy functional modified silica gel. The preparation method of the silica gel is simple in operation steps and mild in reaction conditions. The silica gel is used as a filler for solid-phase extraction to be filled in an extraction column, and can be applied to efficient enrichment and separation of key impurities in ethylene glycol. 本发明提供一种表面修饰的硅胶及其制备方法和应用，涉及分离