Gallium-Immobilized Carbon Nanotubes as Solid Templates for the Synthesis of Hierarchical Ga/ZSM-5 in Methanol Aromatization

Yu Yin Chen, Ching Jung Chang, Hwei Voon Lee, Joon Ching Juan, Yu-Chuan Lin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Hierarchical Ga/ZSM-5 was synthesized by using a combinative method of steam-assisted crystallization (SAC) and hard templating. Ga-immobilized carbon nanotubes (GaCNTs) were used as hard templates. Compared with Ga-doped ZSM-5 catalysts made by impregnation and by sequential CNT templating and impregnation, hierarchical Ga/ZSM-5 had a moderate mesoporosity and possibly a high concentration of (GaO) + -Brønsted acid site. The moderate mesoporosity shortens residence times of products in the ZSM-5 matrix, while the high concentration of (GaO) + -Brønsted acid enhances aromatization activity. These advantages are critical to improve catalytic performance and durability of hierarchical Ga/ZSM-5 in methanol aromatization.

Original languageEnglish
JournalIndustrial and Engineering Chemistry Research
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Aromatization
Gallium
Carbon Nanotubes
Impregnation
Methanol
Carbon nanotubes
Acids
Steam
Crystallization
Durability
Catalysts

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

@article{ae5985de45d24690b71a429674c1bd80,
title = "Gallium-Immobilized Carbon Nanotubes as Solid Templates for the Synthesis of Hierarchical Ga/ZSM-5 in Methanol Aromatization",
abstract = "Hierarchical Ga/ZSM-5 was synthesized by using a combinative method of steam-assisted crystallization (SAC) and hard templating. Ga-immobilized carbon nanotubes (GaCNTs) were used as hard templates. Compared with Ga-doped ZSM-5 catalysts made by impregnation and by sequential CNT templating and impregnation, hierarchical Ga/ZSM-5 had a moderate mesoporosity and possibly a high concentration of (GaO) + -Br{\o}nsted acid site. The moderate mesoporosity shortens residence times of products in the ZSM-5 matrix, while the high concentration of (GaO) + -Br{\o}nsted acid enhances aromatization activity. These advantages are critical to improve catalytic performance and durability of hierarchical Ga/ZSM-5 in methanol aromatization.",
author = "Chen, {Yu Yin} and Chang, {Ching Jung} and Lee, {Hwei Voon} and Juan, {Joon Ching} and Yu-Chuan Lin",
year = "2019",
month = "1",
day = "1",
doi = "10.1021/acs.iecr.9b00726",
language = "English",
journal = "Industrial & Engineering Chemistry Product Research and Development",
issn = "0888-5885",
publisher = "American Chemical Society",

}

Gallium-Immobilized Carbon Nanotubes as Solid Templates for the Synthesis of Hierarchical Ga/ZSM-5 in Methanol Aromatization. / Chen, Yu Yin; Chang, Ching Jung; Lee, Hwei Voon; Juan, Joon Ching; Lin, Yu-Chuan.

In: Industrial and Engineering Chemistry Research, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Gallium-Immobilized Carbon Nanotubes as Solid Templates for the Synthesis of Hierarchical Ga/ZSM-5 in Methanol Aromatization

AU - Chen, Yu Yin

AU - Chang, Ching Jung

AU - Lee, Hwei Voon

AU - Juan, Joon Ching

AU - Lin, Yu-Chuan

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Hierarchical Ga/ZSM-5 was synthesized by using a combinative method of steam-assisted crystallization (SAC) and hard templating. Ga-immobilized carbon nanotubes (GaCNTs) were used as hard templates. Compared with Ga-doped ZSM-5 catalysts made by impregnation and by sequential CNT templating and impregnation, hierarchical Ga/ZSM-5 had a moderate mesoporosity and possibly a high concentration of (GaO) + -Brønsted acid site. The moderate mesoporosity shortens residence times of products in the ZSM-5 matrix, while the high concentration of (GaO) + -Brønsted acid enhances aromatization activity. These advantages are critical to improve catalytic performance and durability of hierarchical Ga/ZSM-5 in methanol aromatization.

AB - Hierarchical Ga/ZSM-5 was synthesized by using a combinative method of steam-assisted crystallization (SAC) and hard templating. Ga-immobilized carbon nanotubes (GaCNTs) were used as hard templates. Compared with Ga-doped ZSM-5 catalysts made by impregnation and by sequential CNT templating and impregnation, hierarchical Ga/ZSM-5 had a moderate mesoporosity and possibly a high concentration of (GaO) + -Brønsted acid site. The moderate mesoporosity shortens residence times of products in the ZSM-5 matrix, while the high concentration of (GaO) + -Brønsted acid enhances aromatization activity. These advantages are critical to improve catalytic performance and durability of hierarchical Ga/ZSM-5 in methanol aromatization.

UR - http://www.scopus.com/inward/record.url?scp=85065891672&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065891672&partnerID=8YFLogxK

U2 - 10.1021/acs.iecr.9b00726

DO - 10.1021/acs.iecr.9b00726

M3 - Article

AN - SCOPUS:85065875815

JO - Industrial & Engineering Chemistry Product Research and Development

JF - Industrial & Engineering Chemistry Product Research and Development

SN - 0888-5885

ER -