Fabrication zone of OSDA-free and seed-free mordenite crystals

Adamu Idris; Umer Khalil; Ismail AbdulAziz; I. G.B.N. Makertihartha; Subagjo; Melia Laniwati; Abdul Rahman Al-Betar; Rino R. Mukti; Oki Muraza

doi:10.1016/j.powtec.2018.09.041

Fabrication zone of OSDA-free and seed-free mordenite crystals

Adamu Idris, Umer Khalil, Ismail AbdulAziz, I. G.B.N. Makertihartha, Subagjo, Melia Laniwati, Abdul Rahman Al-Betar, Rino R. Mukti, Oki Muraza^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

Direct hydrothermal synthesis of mordenite without the addition of both seed and organic template is reported in this work. The role of inorganic cations in the crystal purity and directing the mordenite structure were studied. It was observed that higher Si/Al ratio requires higher alkalinity of the gel. Pure mordenite was obtained using silica gel, colloidal silica and fumed silica. Amorphous material was obtained using tetraethyl orthosilicate (TEOS) due to dissolution problem of TEOS in water. It was also observed that crystal size decrease with decrease in crystallization temperature. The Si/Al ratio can be raised to as high as 50 using silica gel in template-freeprocess. At fixed Na/Si ratio of 0.52, pure mordenite with ratios Si/Al of 15 and 25 could be obtained. Fumed silica favours the formation of rod-like crystals.

Original language	English
Pages (from-to)	992-997
Number of pages	6
Journal	Powder Technology
Volume	342
DOIs	https://doi.org/10.1016/j.powtec.2018.09.041
State	Published - 15 Jan 2019

Bibliographical note

Publisher Copyright:
© 2018

Keywords

Mordenite
Morphology
OSDA free
Seed-free

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.powtec.2018.09.041

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@article{71638fe5ab1e4f8b967f236b10fac4f5,

title = "Fabrication zone of OSDA-free and seed-free mordenite crystals",

abstract = "Direct hydrothermal synthesis of mordenite without the addition of both seed and organic template is reported in this work. The role of inorganic cations in the crystal purity and directing the mordenite structure were studied. It was observed that higher Si/Al ratio requires higher alkalinity of the gel. Pure mordenite was obtained using silica gel, colloidal silica and fumed silica. Amorphous material was obtained using tetraethyl orthosilicate (TEOS) due to dissolution problem of TEOS in water. It was also observed that crystal size decrease with decrease in crystallization temperature. The Si/Al ratio can be raised to as high as 50 using silica gel in template-freeprocess. At fixed Na/Si ratio of 0.52, pure mordenite with ratios Si/Al of 15 and 25 could be obtained. Fumed silica favours the formation of rod-like crystals.",

keywords = "Mordenite, Morphology, OSDA free, Seed-free",

author = "Adamu Idris and Umer Khalil and Ismail AbdulAziz and Makertihartha, \{I. G.B.N.\} and Subagjo and Melia Laniwati and Al-Betar, \{Abdul Rahman\} and Mukti, \{Rino R.\} and Oki Muraza",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = jan,

day = "15",

doi = "10.1016/j.powtec.2018.09.041",

language = "English",

volume = "342",

pages = "992--997",

journal = "Powder Technology",

issn = "0032-5910",

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TY - JOUR

T1 - Fabrication zone of OSDA-free and seed-free mordenite crystals

AU - Idris, Adamu

AU - Khalil, Umer

AU - AbdulAziz, Ismail

AU - Makertihartha, I. G.B.N.

AU - Subagjo,

AU - Laniwati, Melia

AU - Al-Betar, Abdul Rahman

AU - Mukti, Rino R.

AU - Muraza, Oki

PY - 2019/1/15

Y1 - 2019/1/15

N2 - Direct hydrothermal synthesis of mordenite without the addition of both seed and organic template is reported in this work. The role of inorganic cations in the crystal purity and directing the mordenite structure were studied. It was observed that higher Si/Al ratio requires higher alkalinity of the gel. Pure mordenite was obtained using silica gel, colloidal silica and fumed silica. Amorphous material was obtained using tetraethyl orthosilicate (TEOS) due to dissolution problem of TEOS in water. It was also observed that crystal size decrease with decrease in crystallization temperature. The Si/Al ratio can be raised to as high as 50 using silica gel in template-freeprocess. At fixed Na/Si ratio of 0.52, pure mordenite with ratios Si/Al of 15 and 25 could be obtained. Fumed silica favours the formation of rod-like crystals.

AB - Direct hydrothermal synthesis of mordenite without the addition of both seed and organic template is reported in this work. The role of inorganic cations in the crystal purity and directing the mordenite structure were studied. It was observed that higher Si/Al ratio requires higher alkalinity of the gel. Pure mordenite was obtained using silica gel, colloidal silica and fumed silica. Amorphous material was obtained using tetraethyl orthosilicate (TEOS) due to dissolution problem of TEOS in water. It was also observed that crystal size decrease with decrease in crystallization temperature. The Si/Al ratio can be raised to as high as 50 using silica gel in template-freeprocess. At fixed Na/Si ratio of 0.52, pure mordenite with ratios Si/Al of 15 and 25 could be obtained. Fumed silica favours the formation of rod-like crystals.

KW - Mordenite

KW - Morphology

KW - OSDA free

KW - Seed-free

UR - https://www.scopus.com/pages/publications/85056592779

U2 - 10.1016/j.powtec.2018.09.041

DO - 10.1016/j.powtec.2018.09.041

M3 - Article

AN - SCOPUS:85056592779

SN - 0032-5910

VL - 342

SP - 992

EP - 997

JO - Powder Technology

JF - Powder Technology

ER -

Fabrication zone of OSDA-free and seed-free mordenite crystals

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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