Structural investigation of ETS-4

Philippou, Andreas; Anderson, Michael W.

doi:10.1016/0144-2449(95)00107-7

Cited by 104 publications

(62 citation statements)

References 4 publications

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“…4a). The first line stems from the Si (2Si, 2Ti oct ) configuration, while the second one is attributed to a Si (3Si, 1Ti semi-oct ) configuration [13,29]. The ratio of the intensity of the two lines (I -90 /I -95 ) is ca.…”

Section: Characterization Techniquesmentioning

confidence: 91%

“…The 29 Si-NMR spectrum of ETAS-10 containing Al atoms in the structure is very interesting, because it shows well-resolved lines compared to the spectra reported in the literature (Fig. 4d) [16,[30][31][32][33].…”

Section: Characterization Techniquesmentioning

confidence: 91%

“…Therefore, even for phase 10, Al atoms are occupying the position of Si atoms. Figure 4 shows the high-resolution solid-state 29 Si-NMR spectra of ETS-4, ETS-10, ETAS-4 and ETAS-10 samples. The 29 Si-NMR spectrum of ETS-4 showed two lines, one at -90.0 ppm and the other one at -94.5 ppm versus TMS (Fig.…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…Finally, in order to examine the internal structure of materials, high-resolution solid-state 29 Si-NMR and 27 Al-NMR were performed using a Varian 400 and a Bruker Avance 500 instrument, respectively. For 29 Si (79.5 MHz), a 6-ls (# ¼ p = 6 ) pulse and a repetition time of 40 s were used.…”

Section: Characterizationmentioning

confidence: 99%

“…Some 5000 FIDs were accumulated before Fourier transformation. The chemical shifts were measured using tetramethylsilane (TMS) for 29 Si and Al(H 2 O) 6 3? for 27 Al.…”

Section: Characterizationmentioning

confidence: 99%

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Evaluation and comparison of the ammonia adsorption capacity of titanosilicates ETS-4 and ETS-10 and aluminotitanosilicates ETAS-4 and ETAS-10

Luca

Poulsen

Salituro

et al. 2015

J Therm Anal Calorim

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Due to the well-known adsorption properties of titanosilicates (ETS-4 and ETS-10) and aluminotitanosilicates (ETAS-4 and ETAS-10), it was considered particularly interesting to investigate their efficiency in adsorbing ammonia from a gaseous phase. Prior to testing their adsorption capacity, materials thus synthesized have been analyzed by appropriate characterization techniques. Afterward, the adsorption capacity of microporous materials toward ammonia has been evaluated by measuring the corresponding adsorption isotherms through batch experiments. Experimental measurements were best fitted by a linear constant relationship. From the experimental results, high adsorption capacity values were found for all microporous materials in correspondence of high gaseous ammonia concentration values. In particular, ETAS-10 attained the maximum value of adsorption potential, equal to 7.647 mg of NH 3 per g of material. This was likely due to the presence of the acid site linked to the Al atom in its structure with respect to the ETS structure. In addition to that the greater pore size characterizing the phase 10 compared to phase 4 might have entailed a more selective sorption of ammonia molecule. Overall, both titanosilicates and aluminotitanosilicates showed a great adsorption potential toward ammonia. However, materials achieved their maximum capacity at high pollutant loading.

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Section: Characterization Techniquesmentioning

confidence: 91%

Section: Characterization Techniquesmentioning

confidence: 91%

Section: Characterization Techniquesmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

“…Some 5000 FIDs were accumulated before Fourier transformation. The chemical shifts were measured using tetramethylsilane (TMS) for 29 Si and Al(H 2 O) 6 3? for 27 Al.…”

Section: Characterizationmentioning

confidence: 99%

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Evaluation and comparison of the ammonia adsorption capacity of titanosilicates ETS-4 and ETS-10 and aluminotitanosilicates ETAS-4 and ETAS-10

Luca

Poulsen

Salituro

et al. 2015

J Therm Anal Calorim

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Microporous Titanosilicates and other Novel Mixed Octahedral-Tetrahedral Framework Oxides

Rocha

Anderson²

2000

Eur. J. Inorg. Chem.

289

158

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Stable microporous materials, such as zeolites, are extremely important for applications in catalysis, adsorption, ion‐exchange, and separation. In this review we describe a new class of stable microporous materials that involves novel mixed octhaedral‐tetrahedral framework oxides. The archetypal material is based on titanosilicates, although there is tremendous scope for introducing many other transition metals. These materials not only have potential novel applications in the fields normally associated with zeolites but also possible applications in the areas of optoelectronics, nonlinear optics, batteries, magnetic materials and sensors.

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Synthesis of Titanosilicates and Related Materials

Anderson¹,

Rocha²

2002

Handbook of Porous Solids

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Structural investigation of ETS-4

Cited by 104 publications

References 4 publications

Evaluation and comparison of the ammonia adsorption capacity of titanosilicates ETS-4 and ETS-10 and aluminotitanosilicates ETAS-4 and ETAS-10

Evaluation and comparison of the ammonia adsorption capacity of titanosilicates ETS-4 and ETS-10 and aluminotitanosilicates ETAS-4 and ETAS-10

Microporous Titanosilicates and other Novel Mixed Octahedral-Tetrahedral Framework Oxides

Synthesis of Titanosilicates and Related Materials

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