Enhanced hydrogen selectivity from catalytic decomposition of formic acid over FeZnIr nanocatalyst at room temperature

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Hydrogen is considered a promising energy carrier for the future, especially for clean energy generation via fuel cell technologies. Formic acid is one of the prominent sources of clean and cheap hydrogen. In this work, Fe–Zn–Ir nanocatalysts show exceptional performance for selective hydrogen production via HCOOH decomposition, offering a promising alternative that could solve issues associated with hydrogen storage and distribution. Our results show that Fe atoms on the Fe–Zn–Ir surface are responsible for activating the HCOOH molecules; however, the identity of the surface metal atoms (Ir and Zn) dictate the selectivity of the reaction adjacent to the Fe atoms when there is no CO contamination. The high content of Fe atoms that reside at the Fe–Zn–Ir interface sites favored the dehydrogenation of HCOOH. The greater selectivity towards H2 was measured to be 97.4% at 30 min for the higher Fe content (50 wt%). These observations suggest that by controlling the arrangement of surface Fe, Zn, and Ir atoms, the reactivity and selectivity of HCOOH decomposition over Fe–Zn–Ir catalysts could be tailored, optimizing the surface composition. The findings in this study may prove informative for the rational design of Fe–Zn–Ir catalyst systems for reactions associated with hydrogen production, such as for fuel cell applications.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalResearch on Chemical Intermediates
DOIs
Publication statusAccepted/In press - 5 Jul 2018

Fingerprint

formic acid
Hydrogen
Decomposition
Atoms
Hydrogen production
Fuel cells
Temperature
Catalysts
Catalyst selectivity
Hydrogen storage
Dehydrogenation
Carbon Monoxide
Surface structure
Contamination
Metals

Keywords

  • Carbon dioxide
  • Formic acid
  • Hydrogen generation
  • Iridium-catalyzed reaction
  • Room temperature decomposition

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

@article{035e02afdbe44f4ebdbd952a8440952e,
title = "Enhanced hydrogen selectivity from catalytic decomposition of formic acid over FeZnIr nanocatalyst at room temperature",
abstract = "Hydrogen is considered a promising energy carrier for the future, especially for clean energy generation via fuel cell technologies. Formic acid is one of the prominent sources of clean and cheap hydrogen. In this work, Fe–Zn–Ir nanocatalysts show exceptional performance for selective hydrogen production via HCOOH decomposition, offering a promising alternative that could solve issues associated with hydrogen storage and distribution. Our results show that Fe atoms on the Fe–Zn–Ir surface are responsible for activating the HCOOH molecules; however, the identity of the surface metal atoms (Ir and Zn) dictate the selectivity of the reaction adjacent to the Fe atoms when there is no CO contamination. The high content of Fe atoms that reside at the Fe–Zn–Ir interface sites favored the dehydrogenation of HCOOH. The greater selectivity towards H2 was measured to be 97.4{\%} at 30 min for the higher Fe content (50 wt{\%}). These observations suggest that by controlling the arrangement of surface Fe, Zn, and Ir atoms, the reactivity and selectivity of HCOOH decomposition over Fe–Zn–Ir catalysts could be tailored, optimizing the surface composition. The findings in this study may prove informative for the rational design of Fe–Zn–Ir catalyst systems for reactions associated with hydrogen production, such as for fuel cell applications.",
keywords = "Carbon dioxide, Formic acid, Hydrogen generation, Iridium-catalyzed reaction, Room temperature decomposition",
author = "Azizi, {Masitah Abdul Halim} and {Wan Nor Roslam}, {Wan Isahak} and {Mastar @ Masdar}, {Mohd Shahbudin} and Somalu, {Mahendra Rao} and Yarmo, {Mohd. Ambar}",
year = "2018",
month = "7",
day = "5",
doi = "10.1007/s11164-018-3522-x",
language = "English",
pages = "1--16",
journal = "Research on Chemical Intermediates",
issn = "0922-6168",
publisher = "Springer Netherlands",

}

TY - JOUR

T1 - Enhanced hydrogen selectivity from catalytic decomposition of formic acid over FeZnIr nanocatalyst at room temperature

AU - Azizi, Masitah Abdul Halim

AU - Wan Nor Roslam, Wan Isahak

AU - Mastar @ Masdar, Mohd Shahbudin

AU - Somalu, Mahendra Rao

AU - Yarmo, Mohd. Ambar

PY - 2018/7/5

Y1 - 2018/7/5

N2 - Hydrogen is considered a promising energy carrier for the future, especially for clean energy generation via fuel cell technologies. Formic acid is one of the prominent sources of clean and cheap hydrogen. In this work, Fe–Zn–Ir nanocatalysts show exceptional performance for selective hydrogen production via HCOOH decomposition, offering a promising alternative that could solve issues associated with hydrogen storage and distribution. Our results show that Fe atoms on the Fe–Zn–Ir surface are responsible for activating the HCOOH molecules; however, the identity of the surface metal atoms (Ir and Zn) dictate the selectivity of the reaction adjacent to the Fe atoms when there is no CO contamination. The high content of Fe atoms that reside at the Fe–Zn–Ir interface sites favored the dehydrogenation of HCOOH. The greater selectivity towards H2 was measured to be 97.4% at 30 min for the higher Fe content (50 wt%). These observations suggest that by controlling the arrangement of surface Fe, Zn, and Ir atoms, the reactivity and selectivity of HCOOH decomposition over Fe–Zn–Ir catalysts could be tailored, optimizing the surface composition. The findings in this study may prove informative for the rational design of Fe–Zn–Ir catalyst systems for reactions associated with hydrogen production, such as for fuel cell applications.

AB - Hydrogen is considered a promising energy carrier for the future, especially for clean energy generation via fuel cell technologies. Formic acid is one of the prominent sources of clean and cheap hydrogen. In this work, Fe–Zn–Ir nanocatalysts show exceptional performance for selective hydrogen production via HCOOH decomposition, offering a promising alternative that could solve issues associated with hydrogen storage and distribution. Our results show that Fe atoms on the Fe–Zn–Ir surface are responsible for activating the HCOOH molecules; however, the identity of the surface metal atoms (Ir and Zn) dictate the selectivity of the reaction adjacent to the Fe atoms when there is no CO contamination. The high content of Fe atoms that reside at the Fe–Zn–Ir interface sites favored the dehydrogenation of HCOOH. The greater selectivity towards H2 was measured to be 97.4% at 30 min for the higher Fe content (50 wt%). These observations suggest that by controlling the arrangement of surface Fe, Zn, and Ir atoms, the reactivity and selectivity of HCOOH decomposition over Fe–Zn–Ir catalysts could be tailored, optimizing the surface composition. The findings in this study may prove informative for the rational design of Fe–Zn–Ir catalyst systems for reactions associated with hydrogen production, such as for fuel cell applications.

KW - Carbon dioxide

KW - Formic acid

KW - Hydrogen generation

KW - Iridium-catalyzed reaction

KW - Room temperature decomposition

UR - http://www.scopus.com/inward/record.url?scp=85049561679&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049561679&partnerID=8YFLogxK

U2 - 10.1007/s11164-018-3522-x

DO - 10.1007/s11164-018-3522-x

M3 - Article

AN - SCOPUS:85049561679

SP - 1

EP - 16

JO - Research on Chemical Intermediates

JF - Research on Chemical Intermediates

SN - 0922-6168

ER -