Catalytic steam reforming of biomass-derived acetic acid over modified Ni/γ-Al2O3 for sustainable hydrogen production

Il Ho Choi, Kyung Ran Hwang, Kwan Young Lee, In Gu Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In order to obtain sustainable H2, the catalytic steam reforming of acetic acid derived from biomass was performed by using the catalysts modified with basic promoters (Mg, La, Cu, and K). La and K increased the total basicity of Ni/γ-Al2O3 by 30.6% and 93.4%, respectively, which could induce ketonization, producing acetone. In contrast, Mg reduced the number of middle and strong basic sites by 17.2% and improved the number of weak basic sites by 5% for Ni/γ-Al2O3, which promoted the steam reforming of acetic acid (ca. 100% of H2 and carbon selectivity at even 450 °C) without ketonization. Moreover, the amount of carbon deposited on Ni/Mg/γ-Al2O3 was 55.1% less than that deposited on Ni/γ-Al2O3. When Cu was employed, the conversion was ca. 60% with less than 70% of H2 selectivity, at all temperatures considered herein.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

Catalytic reforming
Steam reforming
hydrogen production
biomass
Hydrogen production
acetic acid
Acetic acid
steam
Biomass
selectivity
Carbon
carbon
Alkalinity
Acetone
acetone
catalysts
Catalysts
Temperature
temperature

Keywords

  • Acetic acid
  • Basicity
  • Coke formation
  • Regeneration
  • Steam reforming

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

@article{aa80e7bbbe014bbbb82328bca1d681c3,
title = "Catalytic steam reforming of biomass-derived acetic acid over modified Ni/γ-Al2O3 for sustainable hydrogen production",
abstract = "In order to obtain sustainable H2, the catalytic steam reforming of acetic acid derived from biomass was performed by using the catalysts modified with basic promoters (Mg, La, Cu, and K). La and K increased the total basicity of Ni/γ-Al2O3 by 30.6{\%} and 93.4{\%}, respectively, which could induce ketonization, producing acetone. In contrast, Mg reduced the number of middle and strong basic sites by 17.2{\%} and improved the number of weak basic sites by 5{\%} for Ni/γ-Al2O3, which promoted the steam reforming of acetic acid (ca. 100{\%} of H2 and carbon selectivity at even 450 °C) without ketonization. Moreover, the amount of carbon deposited on Ni/Mg/γ-Al2O3 was 55.1{\%} less than that deposited on Ni/γ-Al2O3. When Cu was employed, the conversion was ca. 60{\%} with less than 70{\%} of H2 selectivity, at all temperatures considered herein.",
keywords = "Acetic acid, Basicity, Coke formation, Regeneration, Steam reforming",
author = "Choi, {Il Ho} and Hwang, {Kyung Ran} and Lee, {Kwan Young} and Lee, {In Gu}",
year = "2018",
month = "1",
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doi = "10.1016/j.ijhydene.2018.04.192",
language = "English",
journal = "International Journal of Hydrogen Energy",
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TY - JOUR

T1 - Catalytic steam reforming of biomass-derived acetic acid over modified Ni/γ-Al2O3 for sustainable hydrogen production

AU - Choi, Il Ho

AU - Hwang, Kyung Ran

AU - Lee, Kwan Young

AU - Lee, In Gu

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In order to obtain sustainable H2, the catalytic steam reforming of acetic acid derived from biomass was performed by using the catalysts modified with basic promoters (Mg, La, Cu, and K). La and K increased the total basicity of Ni/γ-Al2O3 by 30.6% and 93.4%, respectively, which could induce ketonization, producing acetone. In contrast, Mg reduced the number of middle and strong basic sites by 17.2% and improved the number of weak basic sites by 5% for Ni/γ-Al2O3, which promoted the steam reforming of acetic acid (ca. 100% of H2 and carbon selectivity at even 450 °C) without ketonization. Moreover, the amount of carbon deposited on Ni/Mg/γ-Al2O3 was 55.1% less than that deposited on Ni/γ-Al2O3. When Cu was employed, the conversion was ca. 60% with less than 70% of H2 selectivity, at all temperatures considered herein.

AB - In order to obtain sustainable H2, the catalytic steam reforming of acetic acid derived from biomass was performed by using the catalysts modified with basic promoters (Mg, La, Cu, and K). La and K increased the total basicity of Ni/γ-Al2O3 by 30.6% and 93.4%, respectively, which could induce ketonization, producing acetone. In contrast, Mg reduced the number of middle and strong basic sites by 17.2% and improved the number of weak basic sites by 5% for Ni/γ-Al2O3, which promoted the steam reforming of acetic acid (ca. 100% of H2 and carbon selectivity at even 450 °C) without ketonization. Moreover, the amount of carbon deposited on Ni/Mg/γ-Al2O3 was 55.1% less than that deposited on Ni/γ-Al2O3. When Cu was employed, the conversion was ca. 60% with less than 70% of H2 selectivity, at all temperatures considered herein.

KW - Acetic acid

KW - Basicity

KW - Coke formation

KW - Regeneration

KW - Steam reforming

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