WOx/ZrO2: A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol

Arun Kumar; Asraf Ali; K. N. Vinod; Amit Kumar Mondal; Hemant Hegde; Ashok Menon; B. H.S. Thimmappa

doi:10.1016/j.molcata.2013.05.010

WO_x/ZrO₂: A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol

Arun Kumar, Asraf Ali, K. N. Vinod, Amit Kumar Mondal, Hemant Hegde, Ashok Menon, B. H.S. Thimmappa

Department of Chemistry, Manipal Institute of Technology, Manipal

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

12 Citations (Scopus)

Abstract

The liquid phase alkylation of catechol with tert-butyl alcohol was carried out over a solid acid catalyst - WO_x/ZrO₂. p-tert-Butyl catechol (4-TBC) was the predominant product with 4,6-di-tert-butyl catechol as the minor product. A systematic study has been carried out to understand the effect of various parameters such as WO₃ loading, mole ratio of the reactants, temperature and catalyst loading. The experimental results indicated that under optimized condition of 1:1 mole ratio of catechol to tert-butyl alcohol at 413 K within 30 min, both the conversion for catechol and selectivity towards 4-TBC was 99%. The Langmuir-Hinshelwood-Hougen-Watson (LHHW) surface reaction controlled model has been used for kinetic studies.

Original language	English
Pages (from-to)	22-29
Number of pages	8
Journal	Journal of Molecular Catalysis A: Chemical
Volume	378
DOIs	https://doi.org/10.1016/j.molcata.2013.05.010
Publication status	Published - 21-06-2013

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

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10.1016/j.molcata.2013.05.010

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title = "WOx/ZrO2: A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol",

abstract = "The liquid phase alkylation of catechol with tert-butyl alcohol was carried out over a solid acid catalyst - WOx/ZrO2. p-tert-Butyl catechol (4-TBC) was the predominant product with 4,6-di-tert-butyl catechol as the minor product. A systematic study has been carried out to understand the effect of various parameters such as WO3 loading, mole ratio of the reactants, temperature and catalyst loading. The experimental results indicated that under optimized condition of 1:1 mole ratio of catechol to tert-butyl alcohol at 413 K within 30 min, both the conversion for catechol and selectivity towards 4-TBC was 99%. The Langmuir-Hinshelwood-Hougen-Watson (LHHW) surface reaction controlled model has been used for kinetic studies.",

author = "Arun Kumar and Asraf Ali and Vinod, {K. N.} and Mondal, {Amit Kumar} and Hemant Hegde and Ashok Menon and Thimmappa, {B. H.S.}",

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doi = "10.1016/j.molcata.2013.05.010",

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T1 - WOx/ZrO2

T2 - A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol

AU - Kumar, Arun

AU - Ali, Asraf

AU - Vinod, K. N.

AU - Mondal, Amit Kumar

AU - Hegde, Hemant

AU - Menon, Ashok

AU - Thimmappa, B. H.S.

PY - 2013/6/21

Y1 - 2013/6/21

N2 - The liquid phase alkylation of catechol with tert-butyl alcohol was carried out over a solid acid catalyst - WOx/ZrO2. p-tert-Butyl catechol (4-TBC) was the predominant product with 4,6-di-tert-butyl catechol as the minor product. A systematic study has been carried out to understand the effect of various parameters such as WO3 loading, mole ratio of the reactants, temperature and catalyst loading. The experimental results indicated that under optimized condition of 1:1 mole ratio of catechol to tert-butyl alcohol at 413 K within 30 min, both the conversion for catechol and selectivity towards 4-TBC was 99%. The Langmuir-Hinshelwood-Hougen-Watson (LHHW) surface reaction controlled model has been used for kinetic studies.

AB - The liquid phase alkylation of catechol with tert-butyl alcohol was carried out over a solid acid catalyst - WOx/ZrO2. p-tert-Butyl catechol (4-TBC) was the predominant product with 4,6-di-tert-butyl catechol as the minor product. A systematic study has been carried out to understand the effect of various parameters such as WO3 loading, mole ratio of the reactants, temperature and catalyst loading. The experimental results indicated that under optimized condition of 1:1 mole ratio of catechol to tert-butyl alcohol at 413 K within 30 min, both the conversion for catechol and selectivity towards 4-TBC was 99%. The Langmuir-Hinshelwood-Hougen-Watson (LHHW) surface reaction controlled model has been used for kinetic studies.

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WO_x/ZrO₂: A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol

Abstract

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