Single-step synthesis of dimethyl ether from syngas on Al2O 3-modified CuO-ZnO-Al2O3/ferrierite catalysts: Effects of Al2O3 content

Yeong Jun Lee, Min Hye Jung, Jong Bae Lee, Kwang Eun Jeong, Hyun Seog Roh, Young Woong Suh, Jong Wook Bae

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Single step synthesis of dimethyl ether (DME) from syngas on the bifunctional catalysts of CuO-ZnO-Al2O3 deposited on Al2O3-modified H-ferrierite was investigated to elucidate effects of Al2O3 modification of H-ferrierite in terms of CO conversion and DME yield. The enhanced catalytic activity was observed on the bifunctional catalysts at an optimum content of Al2O3 on H-ferrierite around 2.5-5 wt%. It is attributed to a higher dispersion of Al2O3 on H-ferrierite with an enhanced interaction of copper particles with Al2O3 modified H-ferrierite with a lower aggregation property by adjusting acidic sites and by increasing the dispersion of copper particles. The main role of Al2O3 on H-ferrierite is found to reduce strong acidic sites by depositing on the sites selectively, which resulted in showing a lower formation of byproducts. Both of copper surface area and amount of acidic sites are well correlated with an intrinsic activity (turn-over frequency; TOF), which revealed a structure-insensitive reaction character of a single-step synthesis of DME. The measurements of the dispersion of Al2O3 and copper particles with the number of acidic sites concomitantly were employed to verify the effects of Al2O3 modification of H-ferrierite though X-ray photoelectron spectroscopy, temperature-programmed methods and surface morphology characterizations.

Original languageEnglish
Pages (from-to)175-182
Number of pages8
JournalCatalysis Today
Volume228
DOIs
Publication statusPublished - 2014 Jun 1

Fingerprint

Copper
Ethers
Catalysts
Carbon Monoxide
Surface morphology
Byproducts
Catalyst activity
Agglomeration
X ray photoelectron spectroscopy
dimethyl ether
Temperature

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Lee, Yeong Jun ; Jung, Min Hye ; Lee, Jong Bae ; Jeong, Kwang Eun ; Roh, Hyun Seog ; Suh, Young Woong ; Bae, Jong Wook. / Single-step synthesis of dimethyl ether from syngas on Al2O 3-modified CuO-ZnO-Al2O3/ferrierite catalysts : Effects of Al2O3 content. In: Catalysis Today. 2014 ; Vol. 228. pp. 175-182.
@article{e6ad4c53a653436a8d1322290776957e,
title = "Single-step synthesis of dimethyl ether from syngas on Al2O 3-modified CuO-ZnO-Al2O3/ferrierite catalysts: Effects of Al2O3 content",
abstract = "Single step synthesis of dimethyl ether (DME) from syngas on the bifunctional catalysts of CuO-ZnO-Al2O3 deposited on Al2O3-modified H-ferrierite was investigated to elucidate effects of Al2O3 modification of H-ferrierite in terms of CO conversion and DME yield. The enhanced catalytic activity was observed on the bifunctional catalysts at an optimum content of Al2O3 on H-ferrierite around 2.5-5 wt{\%}. It is attributed to a higher dispersion of Al2O3 on H-ferrierite with an enhanced interaction of copper particles with Al2O3 modified H-ferrierite with a lower aggregation property by adjusting acidic sites and by increasing the dispersion of copper particles. The main role of Al2O3 on H-ferrierite is found to reduce strong acidic sites by depositing on the sites selectively, which resulted in showing a lower formation of byproducts. Both of copper surface area and amount of acidic sites are well correlated with an intrinsic activity (turn-over frequency; TOF), which revealed a structure-insensitive reaction character of a single-step synthesis of DME. The measurements of the dispersion of Al2O3 and copper particles with the number of acidic sites concomitantly were employed to verify the effects of Al2O3 modification of H-ferrierite though X-ray photoelectron spectroscopy, temperature-programmed methods and surface morphology characterizations.",
author = "Lee, {Yeong Jun} and Jung, {Min Hye} and Lee, {Jong Bae} and Jeong, {Kwang Eun} and Roh, {Hyun Seog} and Suh, {Young Woong} and Bae, {Jong Wook}",
year = "2014",
month = "6",
day = "1",
doi = "10.1016/j.cattod.2013.11.015",
language = "English",
volume = "228",
pages = "175--182",
journal = "Catalysis Today",
issn = "0920-5861",
publisher = "Elsevier",

}

Single-step synthesis of dimethyl ether from syngas on Al2O 3-modified CuO-ZnO-Al2O3/ferrierite catalysts : Effects of Al2O3 content. / Lee, Yeong Jun; Jung, Min Hye; Lee, Jong Bae; Jeong, Kwang Eun; Roh, Hyun Seog; Suh, Young Woong; Bae, Jong Wook.

In: Catalysis Today, Vol. 228, 01.06.2014, p. 175-182.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Single-step synthesis of dimethyl ether from syngas on Al2O 3-modified CuO-ZnO-Al2O3/ferrierite catalysts

T2 - Effects of Al2O3 content

AU - Lee, Yeong Jun

AU - Jung, Min Hye

AU - Lee, Jong Bae

AU - Jeong, Kwang Eun

AU - Roh, Hyun Seog

AU - Suh, Young Woong

AU - Bae, Jong Wook

PY - 2014/6/1

Y1 - 2014/6/1

N2 - Single step synthesis of dimethyl ether (DME) from syngas on the bifunctional catalysts of CuO-ZnO-Al2O3 deposited on Al2O3-modified H-ferrierite was investigated to elucidate effects of Al2O3 modification of H-ferrierite in terms of CO conversion and DME yield. The enhanced catalytic activity was observed on the bifunctional catalysts at an optimum content of Al2O3 on H-ferrierite around 2.5-5 wt%. It is attributed to a higher dispersion of Al2O3 on H-ferrierite with an enhanced interaction of copper particles with Al2O3 modified H-ferrierite with a lower aggregation property by adjusting acidic sites and by increasing the dispersion of copper particles. The main role of Al2O3 on H-ferrierite is found to reduce strong acidic sites by depositing on the sites selectively, which resulted in showing a lower formation of byproducts. Both of copper surface area and amount of acidic sites are well correlated with an intrinsic activity (turn-over frequency; TOF), which revealed a structure-insensitive reaction character of a single-step synthesis of DME. The measurements of the dispersion of Al2O3 and copper particles with the number of acidic sites concomitantly were employed to verify the effects of Al2O3 modification of H-ferrierite though X-ray photoelectron spectroscopy, temperature-programmed methods and surface morphology characterizations.

AB - Single step synthesis of dimethyl ether (DME) from syngas on the bifunctional catalysts of CuO-ZnO-Al2O3 deposited on Al2O3-modified H-ferrierite was investigated to elucidate effects of Al2O3 modification of H-ferrierite in terms of CO conversion and DME yield. The enhanced catalytic activity was observed on the bifunctional catalysts at an optimum content of Al2O3 on H-ferrierite around 2.5-5 wt%. It is attributed to a higher dispersion of Al2O3 on H-ferrierite with an enhanced interaction of copper particles with Al2O3 modified H-ferrierite with a lower aggregation property by adjusting acidic sites and by increasing the dispersion of copper particles. The main role of Al2O3 on H-ferrierite is found to reduce strong acidic sites by depositing on the sites selectively, which resulted in showing a lower formation of byproducts. Both of copper surface area and amount of acidic sites are well correlated with an intrinsic activity (turn-over frequency; TOF), which revealed a structure-insensitive reaction character of a single-step synthesis of DME. The measurements of the dispersion of Al2O3 and copper particles with the number of acidic sites concomitantly were employed to verify the effects of Al2O3 modification of H-ferrierite though X-ray photoelectron spectroscopy, temperature-programmed methods and surface morphology characterizations.

UR - http://www.scopus.com/inward/record.url?scp=84896915204&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896915204&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2013.11.015

DO - 10.1016/j.cattod.2013.11.015

M3 - Article

AN - SCOPUS:84896915204

VL - 228

SP - 175

EP - 182

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

ER -