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1. (WO2017131542) PROCESS FOR THE PRODUCTION OF MESOPOROUS SILICA NANOPARTICLES WITH DIAMETERS UNDER 100 NANOMETERS AND PRECISE CONTROL OF THE PARTICLE SIZE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/131542 International Application No.: PCT/PT2017/000003
Publication Date: 03.08.2017 International Filing Date: 24.01.2017
IPC:
C01B 33/14 (2006.01) ,C01B 37/02 (2006.01) ,C01B 33/18 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
113
Silicon oxides; Hydrates thereof
12
Silica; Hydrates thereof, e.g. lepidoic silicic acid
14
Colloidal silica, e.g. dispersions, gels, sols
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
37
Compounds having molecular sieve properties but not having base-exchange properties
02
Crystalline silica-polymorphs, e.g. silicalites
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
113
Silicon oxides; Hydrates thereof
12
Silica; Hydrates thereof, e.g. lepidoic silicic acid
18
Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
Applicants:
INSTITUTO SUPERIOR TÉCNICO [PT/PT]; Avenida Rovisco Pais 1049-001 Lisboa, PT
Inventors:
CALISTO BALEIZÃO, Carlos Manuel; PT
SEQUEIRA FARINHA, José Paulo; PT
VIEIRA RIBEIRO, Tânia Raquel; PT
GOMES RODRIGUES, Ana Sofia; PT
Priority Data:
10911026.01.2016PT
Title (EN) PROCESS FOR THE PRODUCTION OF MESOPOROUS SILICA NANOPARTICLES WITH DIAMETERS UNDER 100 NANOMETERS AND PRECISE CONTROL OF THE PARTICLE SIZE
(FR) PROCÉDÉ POUR LA PRODUCTION DE NANOPARTICULES DE SILICE MÉSOPOREUSE PRÉSENTANT DES DIAMÈTRES INFÉRIEURS À 100 NANOMÈTRES ET UN RÉGLAGE PRÉCIS DE LA TAILLE DES PARTICULES
Abstract:
(EN) The present invention describes the production process of hybrid mesoporous silica nanoparticles, with diameters under 100 run and precise control of the particle size. The process to prepare the nanoparticles is a. sol-gel method in aqueous medium, using a template (ionic surfactant), sol-gel precursors (metallic alkoxides), a base, an ionic compound constituted by mono and/or polyvalent cations and anions, and organic molecules with at least one alkoxysilane group. The control of the mesoporous silica nanoparticle diameter and of the pore dimensions and shape, is achieved by changing the pH or the ionic strength of the reaction mixture. The mesoporous silica nanoparticles described in this invention can be used for applications in imaging, carrier vehicles and/or controlled release, catalysts supports, or in adsorption.
(FR) La présente invention concerne le procédé de production de nanoparticules de silice mésoporeuse hybride, présentant des diamètres inférieurs à 100 nm et un réglage précis de la taille des particules. Le procédé de préparation des nanoparticules est un procédé sol-gel en milieu aqueux, utilisant un gabarit (tensioactif ionique), des précurseurs sol-gel (alcoxydes métalliques), une base, un composé ionique constitué par des cations et des anions monovalents et/ou polyvalents, et des molécules organiques comprenant au moins un groupe alcoxysilane. Le réglage du diamètre des nanoparticules de silice mésoporeuse et des dimensions et de la forme des pores, est obtenu en modifiant le pH ou la force ionique du mélange réactionnel. Les nanoparticules de silice mésoporeuse décrites dans cette invention peuvent être utilisées pour des applications dans l'imagerie, des véhicules excipients et/ou des supports de catalyseurs à libération contrôlée, ou dans l'adsorption.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)