Synthesis of ZSM-12 (MTW) with different Al-source: Towards understanding the effects of crystallization parameters

Mohammed Sanhoob; Oki Muraza; Zain H. Yamani; Eid M. Al-Mutairi; Teruoki Tago; Belabbes Merzougui; Takao Masuda

doi:10.1016/j.micromeso.2014.03.033

Synthesis of ZSM-12 (MTW) with different Al-source: Towards understanding the effects of crystallization parameters

Mohammed Sanhoob, Oki Muraza^*, Zain H. Yamani, Eid M. Al-Mutairi, Teruoki Tago, Belabbes Merzougui, Takao Masuda

^*Corresponding author for this work

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

30 Scopus citations

Abstract

The effect of synthesis parameters on morphology of ZSM-12 (MTW) zeolite with tetra ethyl ammonium bromide (TEABr) as an organic-structure directing agent was investigated systematically. Aluminum sulfate octahydrate (Al ₂(SO₄)₃·18H₂O) was used as an aluminum (Al) source. The Si/Al ratio was varied from 40 to 180 and alkalinity ratio (NaOH/Si) was set between 0.132 and 0.160. Effects of crystallization temperature and time were studied. The contribution of the aging period on the final morphology of ZSM-12 was investigated in the range of 1.5-6 h. Phase identification of as-synthesized ZSM-12 was confirmed by X-ray diffraction and morphology of crystals was studied by electron microscopy. The alkalinity was one of the most substantial factors that induced the formation of ZSM-5 (MFI) nuclei as a competing phase. Pure ZSM-12 was obtained with Si/Al of 80 at 145 °C. Different agglomeration shapes of ZSM-12 were observed by changing Si/Al ratio. Prolonged aging time up to 6 h induced the formation of ZSM-5 nuclei.

Original language	English
Pages (from-to)	31-37
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	194
DOIs	https://doi.org/10.1016/j.micromeso.2014.03.033
State	Published - Aug 2014

Bibliographical note

Funding Information:
The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through Project No. 10-NAN1391-04 as part of the National Science, Technology and Innovation Plan. We also thank Dr. Abbas Hakeem for FE-SEM sessions.

Keywords

Al sources
Alkalinity
One-dimensional pore
Phase impurity
ZSM-12 (MTW)

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials

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10.1016/j.micromeso.2014.03.033

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@article{79f9ff7cd2104f56999a018359c9736a,

title = "Synthesis of ZSM-12 (MTW) with different Al-source: Towards understanding the effects of crystallization parameters",

abstract = "The effect of synthesis parameters on morphology of ZSM-12 (MTW) zeolite with tetra ethyl ammonium bromide (TEABr) as an organic-structure directing agent was investigated systematically. Aluminum sulfate octahydrate (Al 2(SO4)3·18H2O) was used as an aluminum (Al) source. The Si/Al ratio was varied from 40 to 180 and alkalinity ratio (NaOH/Si) was set between 0.132 and 0.160. Effects of crystallization temperature and time were studied. The contribution of the aging period on the final morphology of ZSM-12 was investigated in the range of 1.5-6 h. Phase identification of as-synthesized ZSM-12 was confirmed by X-ray diffraction and morphology of crystals was studied by electron microscopy. The alkalinity was one of the most substantial factors that induced the formation of ZSM-5 (MFI) nuclei as a competing phase. Pure ZSM-12 was obtained with Si/Al of 80 at 145 °C. Different agglomeration shapes of ZSM-12 were observed by changing Si/Al ratio. Prolonged aging time up to 6 h induced the formation of ZSM-5 nuclei.",

keywords = "Al sources, Alkalinity, One-dimensional pore, Phase impurity, ZSM-12 (MTW)",

author = "Mohammed Sanhoob and Oki Muraza and Yamani, \{Zain H.\} and Al-Mutairi, \{Eid M.\} and Teruoki Tago and Belabbes Merzougui and Takao Masuda",

note = "Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science \& Technology Unit at King Fahd University of Petroleum \& Minerals (KFUPM) for funding this work through Project No. 10-NAN1391-04 as part of the National Science, Technology and Innovation Plan. We also thank Dr. Abbas Hakeem for FE-SEM sessions. ",

year = "2014",

month = aug,

doi = "10.1016/j.micromeso.2014.03.033",

language = "English",

volume = "194",

pages = "31--37",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier B.V.",

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T1 - Synthesis of ZSM-12 (MTW) with different Al-source

T2 - Towards understanding the effects of crystallization parameters

AU - Sanhoob, Mohammed

AU - Muraza, Oki

AU - Yamani, Zain H.

AU - Al-Mutairi, Eid M.

AU - Tago, Teruoki

AU - Merzougui, Belabbes

AU - Masuda, Takao

N1 - Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through Project No. 10-NAN1391-04 as part of the National Science, Technology and Innovation Plan. We also thank Dr. Abbas Hakeem for FE-SEM sessions.

PY - 2014/8

Y1 - 2014/8

N2 - The effect of synthesis parameters on morphology of ZSM-12 (MTW) zeolite with tetra ethyl ammonium bromide (TEABr) as an organic-structure directing agent was investigated systematically. Aluminum sulfate octahydrate (Al 2(SO4)3·18H2O) was used as an aluminum (Al) source. The Si/Al ratio was varied from 40 to 180 and alkalinity ratio (NaOH/Si) was set between 0.132 and 0.160. Effects of crystallization temperature and time were studied. The contribution of the aging period on the final morphology of ZSM-12 was investigated in the range of 1.5-6 h. Phase identification of as-synthesized ZSM-12 was confirmed by X-ray diffraction and morphology of crystals was studied by electron microscopy. The alkalinity was one of the most substantial factors that induced the formation of ZSM-5 (MFI) nuclei as a competing phase. Pure ZSM-12 was obtained with Si/Al of 80 at 145 °C. Different agglomeration shapes of ZSM-12 were observed by changing Si/Al ratio. Prolonged aging time up to 6 h induced the formation of ZSM-5 nuclei.

AB - The effect of synthesis parameters on morphology of ZSM-12 (MTW) zeolite with tetra ethyl ammonium bromide (TEABr) as an organic-structure directing agent was investigated systematically. Aluminum sulfate octahydrate (Al 2(SO4)3·18H2O) was used as an aluminum (Al) source. The Si/Al ratio was varied from 40 to 180 and alkalinity ratio (NaOH/Si) was set between 0.132 and 0.160. Effects of crystallization temperature and time were studied. The contribution of the aging period on the final morphology of ZSM-12 was investigated in the range of 1.5-6 h. Phase identification of as-synthesized ZSM-12 was confirmed by X-ray diffraction and morphology of crystals was studied by electron microscopy. The alkalinity was one of the most substantial factors that induced the formation of ZSM-5 (MFI) nuclei as a competing phase. Pure ZSM-12 was obtained with Si/Al of 80 at 145 °C. Different agglomeration shapes of ZSM-12 were observed by changing Si/Al ratio. Prolonged aging time up to 6 h induced the formation of ZSM-5 nuclei.

KW - Al sources

KW - Alkalinity

KW - One-dimensional pore

KW - Phase impurity

KW - ZSM-12 (MTW)

UR - https://www.scopus.com/pages/publications/84898778846

U2 - 10.1016/j.micromeso.2014.03.033

DO - 10.1016/j.micromeso.2014.03.033

M3 - Article

AN - SCOPUS:84898778846

SN - 1387-1811

VL - 194

SP - 31

EP - 37

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

ER -

Synthesis of ZSM-12 (MTW) with different Al-source: Towards understanding the effects of crystallization parameters

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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