Template-free synthesis of mesoporous Mn                         3                         O                         4                         -Al                         2                         O                         3                          catalyst for low temperature selective catalytic reduction of NO with NH                         3

Pei Yu Chao; Chun Han Hsu; Hong Ping Lin

doi:10.1016/j.jtice.2018.12.006

Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃

Pei Yu Chao, Chun Han Hsu, Hong Ping Lin

Department of Chemistry

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

7 Citations (Scopus)

Abstract

Mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst with highly dispersed Mn ₃ O ₄ and a high surface area is prepared using a one-pot synthesis technique without any templates. The synthesis procedure is environmentally friendly due to the low concentration of residual metal ions in the filtered solution, which allows for its direct release without further processing. The results show that the presence of Mn ²⁺ ions stabilizes the Al(OH) ₃ crystal phase during hydrothermal treatment and prevents the formation of the AlOOH phase otherwise observed in the absence of Mn ²⁺ ions. Because of the high stability of the resulted Mn ₃ O ₄ -Al(OH) ₃ nanoplatelets, a mesoporous Mn ₃ O ₄ -Al ₂ O ₃ structure was formed via the dehydration of the Al(OH) ₃ after high-temperature calcination. The catalytic efficiencies of the Mn ₃ O ₄ -Al ₂ O ₃ catalysts in the low-temperature selective catalytic reduction of NO with NH ₃ are examined under various reaction temperatures in the range of 80–200 °C. The results show that the NO conversion reaches as much as 94% at a reaction temperature of 80 °C. The proposed synthesis method thus holds considerable promise for the green, low-cost and scalable production of highly mesoporous Al ₂ O ₃ -based catalysts.

Original language	English
Pages (from-to)	627-633
Number of pages	7
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	96
DOIs	https://doi.org/10.1016/j.jtice.2018.12.006
Publication status	Published - 2019 Mar

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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10.1016/j.jtice.2018.12.006

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Chao, P. Y., Hsu, C. H., & Lin, H. P. (2019). Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃ Journal of the Taiwan Institute of Chemical Engineers, 96, 627-633. https://doi.org/10.1016/j.jtice.2018.12.006

Chao, Pei Yu ; Hsu, Chun Han ; Lin, Hong Ping. / Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃ In: Journal of the Taiwan Institute of Chemical Engineers. 2019 ; Vol. 96. pp. 627-633.

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title = " Template-free synthesis of mesoporous Mn 3 O 4 -Al 2 O 3 catalyst for low temperature selective catalytic reduction of NO with NH 3 ",

abstract = " Mesoporous Mn 3 O 4 -Al 2 O 3 catalyst with highly dispersed Mn 3 O 4 and a high surface area is prepared using a one-pot synthesis technique without any templates. The synthesis procedure is environmentally friendly due to the low concentration of residual metal ions in the filtered solution, which allows for its direct release without further processing. The results show that the presence of Mn 2+ ions stabilizes the Al(OH) 3 crystal phase during hydrothermal treatment and prevents the formation of the AlOOH phase otherwise observed in the absence of Mn 2+ ions. Because of the high stability of the resulted Mn 3 O 4 -Al(OH) 3 nanoplatelets, a mesoporous Mn 3 O 4 -Al 2 O 3 structure was formed via the dehydration of the Al(OH) 3 after high-temperature calcination. The catalytic efficiencies of the Mn 3 O 4 -Al 2 O 3 catalysts in the low-temperature selective catalytic reduction of NO with NH 3 are examined under various reaction temperatures in the range of 80–200 °C. The results show that the NO conversion reaches as much as 94% at a reaction temperature of 80 °C. The proposed synthesis method thus holds considerable promise for the green, low-cost and scalable production of highly mesoporous Al 2 O 3 -based catalysts.",

author = "Chao, {Pei Yu} and Hsu, {Chun Han} and Lin, {Hong Ping}",

note = "Publisher Copyright: {\textcopyright} 2018 Taiwan Institute of Chemical Engineers",

year = "2019",

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doi = "10.1016/j.jtice.2018.12.006",

language = "English",

volume = "96",

pages = "627--633",

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Chao, PY, Hsu, CH & Lin, HP 2019, ' Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃ ', Journal of the Taiwan Institute of Chemical Engineers, vol. 96, pp. 627-633. https://doi.org/10.1016/j.jtice.2018.12.006

Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃ . / Chao, Pei Yu; Hsu, Chun Han; Lin, Hong Ping.
In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 96, 03.2019, p. 627-633.

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

TY - JOUR

T1 - Template-free synthesis of mesoporous Mn 3 O 4 -Al 2 O 3 catalyst for low temperature selective catalytic reduction of NO with NH 3

AU - Chao, Pei Yu

AU - Hsu, Chun Han

AU - Lin, Hong Ping

PY - 2019/3

Y1 - 2019/3

N2 - Mesoporous Mn 3 O 4 -Al 2 O 3 catalyst with highly dispersed Mn 3 O 4 and a high surface area is prepared using a one-pot synthesis technique without any templates. The synthesis procedure is environmentally friendly due to the low concentration of residual metal ions in the filtered solution, which allows for its direct release without further processing. The results show that the presence of Mn 2+ ions stabilizes the Al(OH) 3 crystal phase during hydrothermal treatment and prevents the formation of the AlOOH phase otherwise observed in the absence of Mn 2+ ions. Because of the high stability of the resulted Mn 3 O 4 -Al(OH) 3 nanoplatelets, a mesoporous Mn 3 O 4 -Al 2 O 3 structure was formed via the dehydration of the Al(OH) 3 after high-temperature calcination. The catalytic efficiencies of the Mn 3 O 4 -Al 2 O 3 catalysts in the low-temperature selective catalytic reduction of NO with NH 3 are examined under various reaction temperatures in the range of 80–200 °C. The results show that the NO conversion reaches as much as 94% at a reaction temperature of 80 °C. The proposed synthesis method thus holds considerable promise for the green, low-cost and scalable production of highly mesoporous Al 2 O 3 -based catalysts.

AB - Mesoporous Mn 3 O 4 -Al 2 O 3 catalyst with highly dispersed Mn 3 O 4 and a high surface area is prepared using a one-pot synthesis technique without any templates. The synthesis procedure is environmentally friendly due to the low concentration of residual metal ions in the filtered solution, which allows for its direct release without further processing. The results show that the presence of Mn 2+ ions stabilizes the Al(OH) 3 crystal phase during hydrothermal treatment and prevents the formation of the AlOOH phase otherwise observed in the absence of Mn 2+ ions. Because of the high stability of the resulted Mn 3 O 4 -Al(OH) 3 nanoplatelets, a mesoporous Mn 3 O 4 -Al 2 O 3 structure was formed via the dehydration of the Al(OH) 3 after high-temperature calcination. The catalytic efficiencies of the Mn 3 O 4 -Al 2 O 3 catalysts in the low-temperature selective catalytic reduction of NO with NH 3 are examined under various reaction temperatures in the range of 80–200 °C. The results show that the NO conversion reaches as much as 94% at a reaction temperature of 80 °C. The proposed synthesis method thus holds considerable promise for the green, low-cost and scalable production of highly mesoporous Al 2 O 3 -based catalysts.

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ER -

Chao PY, Hsu CH, Lin HP. Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃ Journal of the Taiwan Institute of Chemical Engineers. 2019 Mar;96:627-633. doi: 10.1016/j.jtice.2018.12.006

Template-free synthesis of mesoporous Mn ₃ O ₄ -Al ₂ O ₃ catalyst for low temperature selective catalytic reduction of NO with NH ₃

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