Silylant Agent
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Synthesis, characterization and application adsorptive of a new sililante agent immobilized on silica gel by different routes. / Síntese, caracterização e aplicação adsortiva de um novo agente sililante imobilizado na sílica gel por rotas distintas
The reaction between 3-aminopropyltriethoxysilane (AMPTS) with thioglycolic acid (TGA) resulted in a new sililante agent, AMPTGA. This matrix has nitrogen, oxygen and sulfur as basic centers, that have ability to adsorb metallic cations in solution. Immobilization of AMPTGA onto silica gel surface was developed by using conventional heterogeneous method, usi
Publicado em: 2009
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2. Novos agentes sililantes derivados de precursor epoxido na imobilização e sintese de silica mesoporosa
The silylant precursor agent 3-glycidoxypropyltrimethoxisilane was covalently anchored onto the silica gel surface through homogeneous and heterogeneous routes. Ethylenediamine, 1,3-diaminepropane and 2-aminemethylpyridine molecules were incorporated on the epoxide group in order to explore the properties of these basic nitrogen atoms in coordinating some di
Publicado em: 2003
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3. Aplicação de silica, contendo o grupo etilenodiamina ancorado, como fase estacionaria para CLAE
ln the present work, chromatographic silica was chemically modified with the silylant agent: [3-(2-aminoethyl)aminopropyl]trimethoxysilane (AEAPTS). After this reaction, the residual silanol groups were deactivated with chlorotrimethylsilane. These silicas were reacted with copper ions in a methanol medium. This cation was strongly adsorbed through complexat
Publicado em: 1998