Formation of Colloidal Hydroxy-Sodalite Nanocrystals by the Direct Transformation of Silicalite Nanocrystals

Yao, Jianfeng; Wang, Huanting; Ratinac, Kyle; Ringer, Simon P.

doi:10.1021/cm052731+

Cited by 54 publications

(24 citation statements)

References 33 publications

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“…The resultant nanoparticles of larger size contained the untransformed ZnO while the smaller ZnO particles were fully transformed into ZIF-8. 52 Nevertheless, solid phase ZIF transformation provides a new insight into ZIF crystallization mechanisms. 8.…”

Section: Dry Gel and Mechanochemical Synthesesmentioning

confidence: 99%

Strategies for controlling crystal structure and reducing usage of organic ligand and solvents in the synthesis of zeolitic imidazolate frameworks

Yao

Wang

2015

CrystEngComm

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Zeolitic imidazolate frameworks (ZIFs) have attracted considerable attention for many potential applications because they have unique porous structure and excellent thermal and chemical stability. In recent years, significant efforts have been made to develop different methods for controllable synthesis of ZIFs with desirable crystal structure and morphologies, and for decreasing the excessive amounts of organic ligands and solvents used in the synthesis process to reduce the costs and environmental impact. This paper highlights the strategies recently reported, including controllable synthesis of ZIFs with desirable morphologies and pore structure using surfactant and template in aqueous solution, synthesis of ZIF particles and nanocrystals in base solution, and dry gel and mechanochemical synthesis of ZIFs with a minimal solvent usage.

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Section: Dry Gel and Mechanochemical Synthesesmentioning

confidence: 99%

Strategies for controlling crystal structure and reducing usage of organic ligand and solvents in the synthesis of zeolitic imidazolate frameworks

Yao

Wang

2015

CrystEngComm

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“…Nanocrystalline silica sodalite could be synthesized based on chemical transformation and different SDA's [13][14][15][16][17][18][19] but the method was improper to obtain nanoscaled salt-filled aluminosilicate sodalites. Therefore other methods like transformation of silicalite [20] or micro-emulsion-microwave methods [21] had to be invented. Besides these new methods also common gels under addition of high amounts of guest salt and sodium hydroxide can be successfully applied for sodalite nanoparticle formation.…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline sodalite grown from superalkaline NaCl bearing gels at low temperature (333 K) and the influence of TEA on crystallization process

Buhl

Schuster

Robben

2011

Microporous and Mesoporous Materials

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“…FT-IR spectra of these three samples are presented in Fig. 7 and exhibited characteristic bands of the silicalite Si-O-Si framework at 550, 1090 and 1220 cm -1 , which became stronger with increasing residence time, indicating the formation of better crystalline silicalites [22]. For products produced using the synthesis solution aged at 100°C for 2 h, silicalites were obtained when the residence times were 5.8, 7 and 11 min, Fig.…”

Section: Effect Of Pressure On the Silicalite Crystallizationmentioning

confidence: 93%

Rapid Crystallization of Silicalite Nanocrystals in a Capillary Microreactor

et al. 2009

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Silicalite nanocrystals were synthesized in a pressurized capillary microreactor at 150°C within 11 min with synthesis solutions aged at 80 or 100°C for 1-6 h. The effects of aging of the synthesis solution and the reaction pressure were examined. The resulting products were characterized by XRD, DLS, TEM, FT-IR and TG-DSC. Aging of the synthesis solution played an important role in shortening the crystallization time of the silicalites. The synthesis pressure should be higher than the saturation vapor pressure of water at 150°C (∼0.5 MPa) and silicalite nanocrystals with crystallinities of 70 % and 100 % could be produced from the synthesis solution aged at 100°C for 2 h with residence times of 11 min at 0.7 MPa and 1 MPa, respectively. The mean particle sizes of these two samples were 102.2 nm and 166.4 nm, respectively. Thus, the crystallization time of the silicalite nanocrystals is shown to be significantly reduced in the capillary microreactor compared to a traditional batch system.

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Formation of Colloidal Hydroxy-Sodalite Nanocrystals by the Direct Transformation of Silicalite Nanocrystals

Cited by 54 publications

References 33 publications

Strategies for controlling crystal structure and reducing usage of organic ligand and solvents in the synthesis of zeolitic imidazolate frameworks

Strategies for controlling crystal structure and reducing usage of organic ligand and solvents in the synthesis of zeolitic imidazolate frameworks

Nanocrystalline sodalite grown from superalkaline NaCl bearing gels at low temperature (333 K) and the influence of TEA on crystallization process

Rapid Crystallization of Silicalite Nanocrystals in a Capillary Microreactor

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