Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts

Joo Il Park, Jihn Koo Lee, Jin Miyawaki, Young Kwang Kim, Seong-Ho Yoon, Isao Mochida

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Hydro-conversion reactions were carried out at 360 °C under 5 MPa of H2 pressure to study ring opening reactions of 1-methyl naphthalene using NiMoS supported on γ-alumina and alumina-coated/mixed USY zeolites. The catalysts were characterized using N2 BET, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), pyridine FT-IR, and high-resolution transmission electron microscopy (HR-TEM) to study the influence of morphological and acidic properties on hydrogenation (HYD) and hydrocracking (HC) reactions. NMACZ-2 (NiMoS supported on the minimum amount of alumina-coated USY zeolite) showed enhanced reactivity for HC and produced (alkyl)benzenes with the highest yield, of ca. 80%. By-products were tetralin, decalin and cyclo-paraffin species. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking, possibly due to the weak acid character of γ-alumina. Bulk phase Mo oxide species on NMAZ (physical mixture of alumina and USY zeolite), as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene. Various morphologies, such as the MoS2 structure and acidic characteristics of the catalysts, were crucial factors affecting the HC reactivity of 1-methyl naphthalene.

Original languageEnglish
Pages (from-to)182-189
Number of pages8
JournalFuel
Volume90
Issue number1
DOIs
Publication statusPublished - Jan 1 2011

Fingerprint

Zeolites
Aluminum Oxide
Naphthalene
Benzene
Catalyst supports
Alumina
Hydrocracking
Hydrogenation
Catalysts
High resolution transmission electron microscopy
Coke
Paraffin
Pyridine
Paraffins
Oxides
Byproducts
naphthalene
X ray photoelectron spectroscopy
X ray diffraction
Acids

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts. / Park, Joo Il; Lee, Jihn Koo; Miyawaki, Jin; Kim, Young Kwang; Yoon, Seong-Ho; Mochida, Isao.

In: Fuel, Vol. 90, No. 1, 01.01.2011, p. 182-189.

Research output: Contribution to journalArticle

Park, Joo Il ; Lee, Jihn Koo ; Miyawaki, Jin ; Kim, Young Kwang ; Yoon, Seong-Ho ; Mochida, Isao. / Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts. In: Fuel. 2011 ; Vol. 90, No. 1. pp. 182-189.
@article{78a46012a41241d6a53d51fbc9a0dfd1,
title = "Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts",
abstract = "Hydro-conversion reactions were carried out at 360 °C under 5 MPa of H2 pressure to study ring opening reactions of 1-methyl naphthalene using NiMoS supported on γ-alumina and alumina-coated/mixed USY zeolites. The catalysts were characterized using N2 BET, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), pyridine FT-IR, and high-resolution transmission electron microscopy (HR-TEM) to study the influence of morphological and acidic properties on hydrogenation (HYD) and hydrocracking (HC) reactions. NMACZ-2 (NiMoS supported on the minimum amount of alumina-coated USY zeolite) showed enhanced reactivity for HC and produced (alkyl)benzenes with the highest yield, of ca. 80{\%}. By-products were tetralin, decalin and cyclo-paraffin species. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking, possibly due to the weak acid character of γ-alumina. Bulk phase Mo oxide species on NMAZ (physical mixture of alumina and USY zeolite), as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene. Various morphologies, such as the MoS2 structure and acidic characteristics of the catalysts, were crucial factors affecting the HC reactivity of 1-methyl naphthalene.",
author = "Park, {Joo Il} and Lee, {Jihn Koo} and Jin Miyawaki and Kim, {Young Kwang} and Seong-Ho Yoon and Isao Mochida",
year = "2011",
month = "1",
day = "1",
doi = "10.1016/j.fuel.2010.09.002",
language = "English",
volume = "90",
pages = "182--189",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts

AU - Park, Joo Il

AU - Lee, Jihn Koo

AU - Miyawaki, Jin

AU - Kim, Young Kwang

AU - Yoon, Seong-Ho

AU - Mochida, Isao

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Hydro-conversion reactions were carried out at 360 °C under 5 MPa of H2 pressure to study ring opening reactions of 1-methyl naphthalene using NiMoS supported on γ-alumina and alumina-coated/mixed USY zeolites. The catalysts were characterized using N2 BET, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), pyridine FT-IR, and high-resolution transmission electron microscopy (HR-TEM) to study the influence of morphological and acidic properties on hydrogenation (HYD) and hydrocracking (HC) reactions. NMACZ-2 (NiMoS supported on the minimum amount of alumina-coated USY zeolite) showed enhanced reactivity for HC and produced (alkyl)benzenes with the highest yield, of ca. 80%. By-products were tetralin, decalin and cyclo-paraffin species. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking, possibly due to the weak acid character of γ-alumina. Bulk phase Mo oxide species on NMAZ (physical mixture of alumina and USY zeolite), as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene. Various morphologies, such as the MoS2 structure and acidic characteristics of the catalysts, were crucial factors affecting the HC reactivity of 1-methyl naphthalene.

AB - Hydro-conversion reactions were carried out at 360 °C under 5 MPa of H2 pressure to study ring opening reactions of 1-methyl naphthalene using NiMoS supported on γ-alumina and alumina-coated/mixed USY zeolites. The catalysts were characterized using N2 BET, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), pyridine FT-IR, and high-resolution transmission electron microscopy (HR-TEM) to study the influence of morphological and acidic properties on hydrogenation (HYD) and hydrocracking (HC) reactions. NMACZ-2 (NiMoS supported on the minimum amount of alumina-coated USY zeolite) showed enhanced reactivity for HC and produced (alkyl)benzenes with the highest yield, of ca. 80%. By-products were tetralin, decalin and cyclo-paraffin species. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking, possibly due to the weak acid character of γ-alumina. Bulk phase Mo oxide species on NMAZ (physical mixture of alumina and USY zeolite), as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene. Various morphologies, such as the MoS2 structure and acidic characteristics of the catalysts, were crucial factors affecting the HC reactivity of 1-methyl naphthalene.

UR - http://www.scopus.com/inward/record.url?scp=78449307668&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78449307668&partnerID=8YFLogxK

U2 - 10.1016/j.fuel.2010.09.002

DO - 10.1016/j.fuel.2010.09.002

M3 - Article

VL - 90

SP - 182

EP - 189

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 1

ER -