The effect of H2O/SiO2 ratio in precursor solution on the crystal size and morphology of zeolite ZSM-5

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The effect of H₂O/SiO₂ ratio in precursor solution on the crystal size and morphology of zeolite ZSM-5. / Sashkina, Kseniya A.; Qi, Zhiye; Wu, Wei et al.

In: Microporous and Mesoporous Materials, Vol. 244, 15.05.2017, p. 93-100.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{58d9d74fc9184105bb478dbd6300b134,

title = "The effect of H2O/SiO2 ratio in precursor solution on the crystal size and morphology of zeolite ZSM-5",

abstract = "A series of zeolites ZSM-5 has been synthesized in hydrothermal conditions under various ratios of H2O/SiO2ranging 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/SiO2ratio 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/SiO2ratio in precursor solution from 10 to 300 results in decreasing the average crystal size from 1250 to 180 nm, the higher H2O/SiO2ratio, 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/SiO2molar ratios and the same Si/Al, has a trend to decrease along with the average crystal size increase.",

keywords = "Aggregate-like hollow crystals, Crystal size/morphology control, ZSM-5, CRYSTALLIZATION, PARTICLES, MECHANISM, BEHAVIOR, LIGHT-SCATTERING, MOLECULAR-SIEVES, INITIAL-STAGE, TPA-SILICALITE-1, GROWTH, NUCLEATION",

author = "Sashkina, {Kseniya A.} and Zhiye Qi and Wei Wu and Ayupov, {Artem B.} and Lysikov, {Anton I.} and Parkhomchuk, {Ekaterina V.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

month = may,

day = "15",

doi = "10.1016/j.micromeso.2017.02.060",

language = "English",

volume = "244",

pages = "93--100",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The effect of H2O/SiO2 ratio in precursor solution on the crystal size and morphology of zeolite ZSM-5

AU - Sashkina, Kseniya A.

AU - Qi, Zhiye

AU - Wu, Wei

AU - Ayupov, Artem B.

AU - Lysikov, Anton I.

AU - Parkhomchuk, Ekaterina V.

PY - 2017/5/15

Y1 - 2017/5/15

N2 - A series of zeolites ZSM-5 has been synthesized in hydrothermal conditions under various ratios of H2O/SiO2ranging 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/SiO2ratio 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/SiO2ratio in precursor solution from 10 to 300 results in decreasing the average crystal size from 1250 to 180 nm, the higher H2O/SiO2ratio, 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/SiO2molar ratios and the same Si/Al, has a trend to decrease along with the average crystal size increase.

AB - A series of zeolites ZSM-5 has been synthesized in hydrothermal conditions under various ratios of H2O/SiO2ranging 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/SiO2ratio 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/SiO2ratio in precursor solution from 10 to 300 results in decreasing the average crystal size from 1250 to 180 nm, the higher H2O/SiO2ratio, 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/SiO2molar ratios and the same Si/Al, has a trend to decrease along with the average crystal size increase.

KW - Aggregate-like hollow crystals

KW - Crystal size/morphology control

KW - ZSM-5

KW - CRYSTALLIZATION

KW - PARTICLES

KW - MECHANISM

KW - BEHAVIOR

KW - LIGHT-SCATTERING

KW - MOLECULAR-SIEVES

KW - INITIAL-STAGE

KW - TPA-SILICALITE-1

KW - GROWTH

KW - NUCLEATION

UR - http://www.scopus.com/inward/record.url?scp=85013803999&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2017.02.060

DO - 10.1016/j.micromeso.2017.02.060

M3 - Article

AN - SCOPUS:85013803999

VL - 244

SP - 93

EP - 100

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

ER -

ID: 8716673