Synthesis of silicalite-1 from organo-silicic gels

Sánchez‐Flores, Norma A.; Pacheco‐Malagón, Graciela; Pérez-Romo, Patricia; Armendáriz, H.; Valente, Jaime S.; Guzman-Castillo, Maria de Lourdes; Alcaraz, J; Baños, L.; Blesa, J. M. Saniger; Fripiat, J. J.

doi:10.1016/j.jcis.2008.04.039

Cited by 12 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fumed silica shell was partly dissolved after alkali treatment (compare Figure 7D to F). This is because fumed silica was amorphous and could react with alkali liquor at high temperature [30]. However, fumed silica formed multilayer shells on the surface of polyacrylate microspheres, and the shells were too strong to be totally dissolved in alkali liquor.…”

Section: Alkali Resistancementioning

confidence: 99%

“…To apply core-shell OAM microspheres to cement, fumed silica is employed as a stabilizer to produce microspheres. This is because fumed silica is amorphous [30] and cement slurry is alkaline, so fumed silica can react with cement slurry [31] and strengthen the combination between organic polyacrylates and inorganic cement. Most studies used nanometer silica to stabilize Pickering emulsion and droplets were in the micron level [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and characterization of core-shell oil absorption materials stabilized by modified fumed silica

Wang

Liu

et al. 2016

Journal of Polymer Engineering

View full text Add to dashboard Cite

Abstract The core-shell oil absorption material (OAM) with fumed silica shell was achieved from Pickering polymerization. The modified fumed silica wall could well stabilize both Pickering emulsion and Pickering polymerization. The particle size of encapsulated OAMs decreased with the increasing concentration of fumed silica and remained unchanged when the concentration was more than 1 wt.%. This fumed silica shell had little effect on the oil absorption rate of OAM. The importance was that the shell reversed the surface property and improved the alkali resistance of OAM. We believe that our core-shell OAMs could reach the self-healing ability of the oil well cement.

show abstract

Section: Alkali Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of core-shell oil absorption materials stabilized by modified fumed silica

Wang

Liu

et al. 2016

Journal of Polymer Engineering

View full text Add to dashboard Cite

show abstract

“…The mesoporous phases may have an ordered pore sys tem as in mesoporous silicates with an MCM 41 structure [4, 5, 7-12, 14-21, 26-29, 33-41] or an MCM 48 structure [41]. They may also be amorphous materials with disordered porosity [30][31][32][33]. Also, three phase composites can be obtained in some cases.…”

Section: Micro/mesoporous Compositesmentioning

confidence: 99%

“…Zeolite destruction can take place both in an alkali medium [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] and in the presence of alcohols [30][31][32][33]. In the former case, this process leads to the complete or partial disruption of the zeolite struc ture as a result of desilication; in the latter case, to zeo lite depolymerization.…”

Section: Introductionmentioning

confidence: 99%

Design of micro/mesoporous zeolite-based catalysts for petrochemical and organic syntheses

et al. 2015

View full text Add to dashboard Cite

This review systematizes and analyzes the physicochemical and catalytic properties of micro/meso porous materials prepared by two step recrystallization. The materials are divided into three groups according to the degree of recrystallization: (1) mesostructured zeolites (RZEO 1), (2) micro/mesoporous nanocompos ites (RZEO 2), and (3) mesoporous materials with zeolite fragments (RZEO 3). Particular attention is focused on the catalytic properties of the recrystallized materials in petrochemical and organic syntheses. Main advan tages of the micro/mesoporous molecular sieves over zeolites and mesoporous materials are demonstrated, and ways of obtaining new catalytic systems based on these molecular sieves are suggested.

show abstract

“…The zeolite synthesis procedure was adapted from the work reported by Sánchez-Flores et al (2008). Two series of experiments were carried out in order to evaluate the influence of the SDA on the type of the zeolite produced using PSAL and PS.…”

Section: Synthesis Of Zeolitesmentioning

confidence: 99%

Carbon dioxide capture utilizing zeolites synthesized with paper sludge and scrap-glass

et al. 2014

View full text Add to dashboard Cite

The present work introduces the study of the CO2 capture process by zeolites synthesized from paper sludge and scrap glass. Zeolites ZSM-5, analcime and wairakite were produced by means of two types of Structure Directing Agents (SDA): tetrapropilamonium (TPA) and ethanol. On the one hand, zeolite ZSM-5 was synthesized using TPA; on the other hand, analcime and wairakite were produced with ethanol. The temperature programmed desorption (TPD) technique was performed for determining the CO2 sorption capacity of these zeolites at two sorption temperatures: 50 and 100 °C. CO2 sorption capacity of zeolite ZSM-5 synthesized at 50 °C was 0.683 mmol/g representing 38.2% of the value measured for a zeolite ZSM-5 commercial. Zeolite analcime showed a higher CO2 sorption capacity (1.698 mmol/g) at 50 °C and its regeneration temperature was relatively low. Zeolites synthesized in this study can be used in the purification of biogas and this will produce energy without increasing the atmospheric CO2 concentrations.

show abstract

Synthesis of silicalite-1 from organo-silicic gels

Cited by 12 publications

References 13 publications

Preparation and characterization of core-shell oil absorption materials stabilized by modified fumed silica

Preparation and characterization of core-shell oil absorption materials stabilized by modified fumed silica

Design of micro/mesoporous zeolite-based catalysts for petrochemical and organic syntheses

Carbon dioxide capture utilizing zeolites synthesized with paper sludge and scrap-glass

Contact Info

Product

Resources

About