Synthesis of films of oriented silicalite-1 crystals using microwave heating

Koegler, J.H.; Arafat, Ahmed; Bekkum, H. van; Jansen, J.C.

doi:10.1016/s0167-2991(97)80686-6

Cited by 31 publications

(22 citation statements)

References 5 publications

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“…[15] were some of the first workers to prepare silicalite using microwave heating. They produced silicalite films on silicon at 155 8C for 25 min.…”

Section: Siliceous Zeolites-clear Solutionsmentioning

confidence: 99%

“…Recently, the use of microwave energy during the synthesis of nanoporous membranes has proved to create smaller more uniform crystallites, which are claimed to be more aligned by synthesis within the electromagnetic, microwave fields. [15,19,20,117] The synthesis of both zeolite membranes and mesoporous membranes are claimed to be favorably enhanced by microwave irradiation, as briefly tabulated in Table 6. The particle/crystalline dimensions are more uniform and, apparently, the microwave energy promotes alignment of the pore networks.…”

Section: Membranes and Supported Nanoporous Materialsmentioning

confidence: 99%

“…Silicalite (MFI) membranes were first reported by Koegler et al [15] on silicon supports. These workers produced 100 nm silicalite crystals on the silicon support with rapid microwave heating.…”

Section: Wwwchemphyschemorgmentioning

confidence: 99%

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Microwave Synthesis of Nanoporous Materials

2006

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Studies in the last decade suggest that microwave energy may have a unique ability to influence chemical processes. These include chemical and materials syntheses as well as separations. Specifically, recent studies have documented a significantly reduced time for fabricating zeolites, mixed oxide and mesoporous molecular sieves by employing microwave energy. In many cases, microwave syntheses have proven to synthesize new nanoporous structures. By reducing the times by over an order of magnitude, continuous production would be possible to replace batch synthesis. This lowering of the cost would make more nanoporous materials readily available for many chemical, environmental, and biological applications. Further, microwave syntheses have often proven to create more uniform (defect-free) products than from conventional hydrothermal synthesis. However, the mechanism and engineering for the enhanced rates of syntheses are unknown. We review the many studies that have demonstrated the enhanced syntheses of nanoporous oxides and analyze the proposals to explain differences in microwave reactions. Finally, the microwave reactor engineering is discussed, as it explains the discrepancies between many microwave studies.

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“…[15] were some of the first workers to prepare silicalite using microwave heating. They produced silicalite films on silicon at 155 8C for 25 min.…”

Section: Siliceous Zeolites-clear Solutionsmentioning

confidence: 99%

Section: Membranes and Supported Nanoporous Materialsmentioning

confidence: 99%

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Microwave Synthesis of Nanoporous Materials

2006

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“…This is mainly due to the fact that MFI zeolite membranes are usually prepared at a relatively high temperature of 180 °C ) and the organic structure-directing agent TPA + used to prepare MFI zeolite tends to degradate under microwave irradiation (Arafat et al, 1993). The first study of microwave heating synthesis of silicalite-1 zeolite membranes was reported by Koegler et al (Koegler et al, 1997). With microwave heating, a better control is possible over the temperature-time profile to obtain films containing 100 nm silicate-1 crystals on a silicon support.…”

Section: Mfi (Silicalite-1and Zsm-5) Zeolite Membranementioning

confidence: 99%

Application of Microwave Heating on the Facile Synthesis of Porous Molecular Sieve Membranes

Huang¹,

Caro²

2011

Advances in Induction and Microwave Heating of Mineral and Organic Materials

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“…Barannik [64] prepared a monolith for catalytically active membranes. Koegler [13,65] studied the growing and orientation of Silicalite-1 on a silicon wafer and on quartz. The growth mechanism seems to implicate a film of gel that consumes itself during the growth of crystals that subsequently adhere to the surface.…”

Section: Zeolitic Films On Various Supportsmentioning

confidence: 99%

Zeolite Membranes

Tavolaro¹,

1999

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Zeolite membranes are the focus of much active research due to their extensive potential applications, particularly their superior catalytic and separation properties. Synthesis methods and properties are presented here and compared with those of the zeolite crystalline powders. This review concentrates on composite membranes, the Figure showing the surface of an alumina composite membrane with MOR structure.

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Synthesis of films of oriented silicalite-1 crystals using microwave heating

Cited by 31 publications

References 5 publications

Microwave Synthesis of Nanoporous Materials

Microwave Synthesis of Nanoporous Materials

Application of Microwave Heating on the Facile Synthesis of Porous Molecular Sieve Membranes

Zeolite Membranes

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