The Effect of H2O/SiO2 Ratio in Precursor Solution on the Crystal Size and Morphology of Zeolite ZSM-5 Full article
| Journal |
Microporous and Mesoporous Materials
ISSN: 1387-1811 , E-ISSN: 1873-3093 |
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| Output data | Year: 2017, Volume: 244, Pages: 93-100 Pages count : 8 DOI: 10.1016/j.micromeso.2017.02.060 | ||||||
| Tags | Aggregate-like hollow crystals, Crystal size/morphology control, ZSM-5 | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 16-33-00523 |
Abstract:
A series of zeolites ZSM-5 has been synthesized in hydrothermal conditions under various ratios of H2O/SiO2 ranging from 10 to 300. Materials have been characterized by X-ray diffraction, scanning and transmission electron microscopy, nitrogen adsorption measurements, X-ray fluorescence spectrometry, inductively coupled plasma optical emission spectrometry and temperature-programmed desorption of ammonia. The effect of H2O/SiO2 ratio in precursor solution on ZSM-5 product yield, crystallinity, crystal size, crystal size distribution, morphology, texture and acidity has been studied. The increase of H2O/SiO2 ratio in precursor solution from 10 to 300 results in decreasing the average crystal size from 1250 to 180 nm, the higher H2O/SiO2 ratio, the wider crystal size distribution. Aggregate-like mesoporous/hollow ellipsoid crystals and smooth pill-shaped crystals have been produced from precursor solutions with H2O/SiO2 = 25–100 and H2O/SiO2 = 10; 300, respectively. The average size of domains forming aggregate-like crystals is 40−50 nm. The specific acidity of ZSM-5 samples, synthesized from precursor solutions with different H2O/SiO2 molar ratios and the same Si/Al, has a trend to decrease along with the average crystal size increase.
Cite:
Sashkina K.A.
, Qi Z.
, Wu W.
, Ayupov A.B.
, Lysikov A.I.
, Parkhomchuk E.V.
The Effect of H2O/SiO2 Ratio in Precursor Solution on the Crystal Size and Morphology of Zeolite ZSM-5
Microporous and Mesoporous Materials. 2017. V.244. P.93-100. DOI: 10.1016/j.micromeso.2017.02.060 WOS Scopus РИНЦ ANCAN OpenAlex
The Effect of H2O/SiO2 Ratio in Precursor Solution on the Crystal Size and Morphology of Zeolite ZSM-5
Microporous and Mesoporous Materials. 2017. V.244. P.93-100. DOI: 10.1016/j.micromeso.2017.02.060 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Dec 7, 2016 |
| Accepted: | Feb 17, 2017 |
| Published online: | Feb 20, 2017 |
| Published print: | May 15, 2017 |
Identifiers:
| Web of science: | WOS:000399515500013 |
| Scopus: | 2-s2.0-85013803999 |
| Elibrary: | 29488041 |
| Chemical Abstracts: | 2017:345962 |
| Chemical Abstracts (print): | 166:320661 |
| OpenAlex: | W2591369776 |