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The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals


Čižmek, Ankica; Subotić, Boris; Kralj, Damir; Babić-Ivančić, Vesna; Tonejc, Antun
The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals // Microporous materials, 12 (1997), 4-6; 267-280 (međunarodna recenzija, članak, znanstveni)


Naslov
The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals

Autori
Čižmek, Ankica ; Subotić, Boris ; Kralj, Damir ; Babić-Ivančić, Vesna ; Tonejc, Antun

Izvornik
Microporous materials (0927-6513) 12 (1997), 4-6; 267-280

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Crystallization; gel ageing; morphology; nucleation; particulate properties; silicalite-1

Sažetak
The influence of time and temperature of ageing of the amorphous gel precursor (2.5 Na2O-8TPABr-60SiO2-800H2O) on the particulate properties (particle size distribution, particle shape, number of particles) of silicalite-1 synthesized at 170 deg. C were studied by different experimental methods such as X-ray diffractometry (XRD), differental thermogravimetric analysis (TGA), particle size analysis, FT-infra-red spectroscopy and scanning electron microscopy (SEM). In spite of negligible changes in the crystal morphology, agening of the gel considerably affects the number and size of silicalite-1 crystals in the crystalline end products. The observed effects were discussed in terms of the formation of specific ordered subunits between silicate species and TPA+ ions (germ nuclei) and their role in the nucleation and crystal growth of silicalite-1 crystalls.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
00980901
00980902
119202

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Citiraj ovu publikaciju

Čižmek, Ankica; Subotić, Boris; Kralj, Damir; Babić-Ivančić, Vesna; Tonejc, Antun
The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals // Microporous materials, 12 (1997), 4-6; 267-280 (međunarodna recenzija, članak, znanstveni)
Čižmek, A., Subotić, B., Kralj, D., Babić-Ivančić, V. & Tonejc, A. (1997) The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals. Microporous materials, 12 (4-6), 267-280.
@article{article, year = {1997}, pages = {267-280}, keywords = {crystallization, gel ageing, morphology, nucleation, particulate properties, silicalite-1}, journal = {Microporous materials}, volume = {12}, number = {4-6}, issn = {0927-6513}, title = {The Influence Of Gel Properties On The Kinetics Of Crystallization And Particulate Properties Of MFI-Type Zeolites. I. The Influence Of Time And Temperature Of Gel Ageing On The Particulate Properties Of Silicalite-1 Microcrystals}, keyword = {crystallization, gel ageing, morphology, nucleation, particulate properties, silicalite-1} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus