t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts

M. Selvaraj; B. H. Him; J. Han; T. G. Lee

doi:10.1016/s0167-2991(05)80289-7

t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts

M. Selvaraj, B. H. Him, J. Han, T. G. Lee

Department of Chemical and Biomolecular Engineering

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

Abstract

t-Butylation of 1,2-dihydroxubenzene (DHB) with isobutene as alkylating agent was carried out over Zn-Al-MCM-41(TIE, template ion-exchange) and Zn-Al-MCM-41(HT, hydrothermal) with different Si/(Zn+Al) catalysts to highly selective synthesis of 4-t-butylcatechol. For the reactions, the influences of various reaction parameters such as different catalysts, reaction temperature, WHSV (weight hourly space velocity), reactant molar ratio are discussed. The selectivity of 4-t-butylcatechol in Zn-Al-MCM-41(75)-TIE is higher than that of other Zn-Al-MCM-41(TIE) and Zn-Al-MCM-41(HT) due to increasing the catalytic activity within pores on the silica surface by completely template ion-exchanging through metal-ions under TIE method. Thus a Zn-Al-MCM-41(75)-TIE catalyst is the superior catalyst for the synthesis of 4-t-butylcatechol.

Original language	English
Pages (from-to)	803-808
Number of pages	6
Journal	Studies in Surface Science and Catalysis
Volume	156
DOIs	https://doi.org/10.1016/s0167-2991(05)80289-7
Publication status	Published - 2005

Bibliographical note

Funding Information:
The authors gratefully acknowledge the Korea Research Foundation for sponsoring this work (KRF-2003-005-D00002).

All Science Journal Classification (ASJC) codes

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts",

abstract = "t-Butylation of 1,2-dihydroxubenzene (DHB) with isobutene as alkylating agent was carried out over Zn-Al-MCM-41(TIE, template ion-exchange) and Zn-Al-MCM-41(HT, hydrothermal) with different Si/(Zn+Al) catalysts to highly selective synthesis of 4-t-butylcatechol. For the reactions, the influences of various reaction parameters such as different catalysts, reaction temperature, WHSV (weight hourly space velocity), reactant molar ratio are discussed. The selectivity of 4-t-butylcatechol in Zn-Al-MCM-41(75)-TIE is higher than that of other Zn-Al-MCM-41(TIE) and Zn-Al-MCM-41(HT) due to increasing the catalytic activity within pores on the silica surface by completely template ion-exchanging through metal-ions under TIE method. Thus a Zn-Al-MCM-41(75)-TIE catalyst is the superior catalyst for the synthesis of 4-t-butylcatechol.",

author = "M. Selvaraj and Him, {B. H.} and J. Han and Lee, {T. G.}",

note = "Funding Information: The authors gratefully acknowledge the Korea Research Foundation for sponsoring this work (KRF-2003-005-D00002). ",

year = "2005",

doi = "10.1016/s0167-2991(05)80289-7",

language = "English",

volume = "156",

pages = "803--808",

journal = "Studies in Surface Science and Catalysis",

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T1 - t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts

AU - Selvaraj, M.

AU - Him, B. H.

AU - Han, J.

AU - Lee, T. G.

N1 - Funding Information: The authors gratefully acknowledge the Korea Research Foundation for sponsoring this work (KRF-2003-005-D00002).

PY - 2005

Y1 - 2005

N2 - t-Butylation of 1,2-dihydroxubenzene (DHB) with isobutene as alkylating agent was carried out over Zn-Al-MCM-41(TIE, template ion-exchange) and Zn-Al-MCM-41(HT, hydrothermal) with different Si/(Zn+Al) catalysts to highly selective synthesis of 4-t-butylcatechol. For the reactions, the influences of various reaction parameters such as different catalysts, reaction temperature, WHSV (weight hourly space velocity), reactant molar ratio are discussed. The selectivity of 4-t-butylcatechol in Zn-Al-MCM-41(75)-TIE is higher than that of other Zn-Al-MCM-41(TIE) and Zn-Al-MCM-41(HT) due to increasing the catalytic activity within pores on the silica surface by completely template ion-exchanging through metal-ions under TIE method. Thus a Zn-Al-MCM-41(75)-TIE catalyst is the superior catalyst for the synthesis of 4-t-butylcatechol.

AB - t-Butylation of 1,2-dihydroxubenzene (DHB) with isobutene as alkylating agent was carried out over Zn-Al-MCM-41(TIE, template ion-exchange) and Zn-Al-MCM-41(HT, hydrothermal) with different Si/(Zn+Al) catalysts to highly selective synthesis of 4-t-butylcatechol. For the reactions, the influences of various reaction parameters such as different catalysts, reaction temperature, WHSV (weight hourly space velocity), reactant molar ratio are discussed. The selectivity of 4-t-butylcatechol in Zn-Al-MCM-41(75)-TIE is higher than that of other Zn-Al-MCM-41(TIE) and Zn-Al-MCM-41(HT) due to increasing the catalytic activity within pores on the silica surface by completely template ion-exchanging through metal-ions under TIE method. Thus a Zn-Al-MCM-41(75)-TIE catalyst is the superior catalyst for the synthesis of 4-t-butylcatechol.

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JO - Studies in Surface Science and Catalysis

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ER -

t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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