The effect of K and acidity of NiW-loaded HY zeolite catalyst for selective ring opening of 1-methylnaphthalene

You Jin Lee, Eun Sang Kim, Jeong Rang Kim, Joo Wan Kim, Tae Wan Kim, Ho Jeong Chae, Chul Ung Kim, Chang Ha Lee, Soon Yong Jeong

Research output: Contribution to journalArticle

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Abstract

Bi-functional catalysts were prepared using HY zeolites with various SiO2/Al2O3 ratios for acidic function, NiW for metallic function, and K for acidity control. 1-Methylnaphthalene was selected as a model compound for multi-ring aromatics in heavy oil, and its selective ring opening reaction was investigated using the prepared bi-functional catalysts with different levels of acidity in a fixed bed reactor system. In NiW/HY catalysts without K addition, the acidity decreased with the SiO2/Al2O3 mole ratio of the HY zeolite. Ni1.1 W1.1/HY(12) catalyst showed the highest acidity but slightly lower yields for the selective ring opening than Ni1.1W1.1/HY(30) catalyst. The acidity of the catalyst seemed to play an important role as the active site for the selective ring opening of 1-methylnaphthalene but there should be some optimum catalyst acidity for the reaction. Catalyst acidity could be controlled between Ni1.1W1.1/HY(12) and Ni1.1W1.1/HY(30) by adding a moderate amount of K to Ni1.1W1.1/HY(12) catalyst. K0.3Ni1.1W1.1/HY(12) catalyst should have the optimum acidity for the selective ring opening. The addition of a moderate amount of K to the NiW/HY catalyst must improve the catalytic performance due to the optimization of catalyst acidity.

Original languageEnglish
Pages (from-to)4335-4341
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume16
Issue number5
DOIs
Publication statusPublished - 2016 May 1

Fingerprint

Zeolites
Acidity
acidity
catalysts
Catalysts
rings
Catalytic Domain
Oils
1-methylnaphthalene
zeolites
beds

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Lee, You Jin ; Kim, Eun Sang ; Kim, Jeong Rang ; Kim, Joo Wan ; Kim, Tae Wan ; Chae, Ho Jeong ; Kim, Chul Ung ; Lee, Chang Ha ; Jeong, Soon Yong. / The effect of K and acidity of NiW-loaded HY zeolite catalyst for selective ring opening of 1-methylnaphthalene. In: Journal of Nanoscience and Nanotechnology. 2016 ; Vol. 16, No. 5. pp. 4335-4341.
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The effect of K and acidity of NiW-loaded HY zeolite catalyst for selective ring opening of 1-methylnaphthalene. / Lee, You Jin; Kim, Eun Sang; Kim, Jeong Rang; Kim, Joo Wan; Kim, Tae Wan; Chae, Ho Jeong; Kim, Chul Ung; Lee, Chang Ha; Jeong, Soon Yong.

In: Journal of Nanoscience and Nanotechnology, Vol. 16, No. 5, 01.05.2016, p. 4335-4341.

Research output: Contribution to journalArticle

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T1 - The effect of K and acidity of NiW-loaded HY zeolite catalyst for selective ring opening of 1-methylnaphthalene

AU - Lee, You Jin

AU - Kim, Eun Sang

AU - Kim, Jeong Rang

AU - Kim, Joo Wan

AU - Kim, Tae Wan

AU - Chae, Ho Jeong

AU - Kim, Chul Ung

AU - Lee, Chang Ha

AU - Jeong, Soon Yong

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Y1 - 2016/5/1

N2 - Bi-functional catalysts were prepared using HY zeolites with various SiO2/Al2O3 ratios for acidic function, NiW for metallic function, and K for acidity control. 1-Methylnaphthalene was selected as a model compound for multi-ring aromatics in heavy oil, and its selective ring opening reaction was investigated using the prepared bi-functional catalysts with different levels of acidity in a fixed bed reactor system. In NiW/HY catalysts without K addition, the acidity decreased with the SiO2/Al2O3 mole ratio of the HY zeolite. Ni1.1 W1.1/HY(12) catalyst showed the highest acidity but slightly lower yields for the selective ring opening than Ni1.1W1.1/HY(30) catalyst. The acidity of the catalyst seemed to play an important role as the active site for the selective ring opening of 1-methylnaphthalene but there should be some optimum catalyst acidity for the reaction. Catalyst acidity could be controlled between Ni1.1W1.1/HY(12) and Ni1.1W1.1/HY(30) by adding a moderate amount of K to Ni1.1W1.1/HY(12) catalyst. K0.3Ni1.1W1.1/HY(12) catalyst should have the optimum acidity for the selective ring opening. The addition of a moderate amount of K to the NiW/HY catalyst must improve the catalytic performance due to the optimization of catalyst acidity.

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