Cu functionalized nano crystalline ZSM-5 as efficient catalyst for selective oxidation of toluene

N. Viswanadham; Sandeep K. Saxena; Ala'a H. Al-Muhtaseb

doi:10.1016/j.mtchem.2017.01.001

Cu functionalized nano crystalline ZSM-5 as efficient catalyst for selective oxidation of toluene

N. Viswanadham^*, Sandeep K. Saxena, Ala'a H. Al-Muhtaseb

^*Corresponding author for this work

Petroleum and Chemical Engineering

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

23 Citations (Scopus)

Abstract

Nano crystalline ZSM-5 (NZ) functionalized with Cu has been explored for the selective oxidation of toluene to benzoic acid for the first time, where a comparison is made with the traditional microcrystalline ZSM-5 (MZ) based catalyst having similar framework Si/Al ratios at organic solvent-less reaction conditions in presence of H₂O₂ as a green oxidant. The ZSM-5 catalysts exhibited oxidation property even in the absence of any Cu species, but with low toluene conversions and benzoic acid yields. Functionalization with Cu greatly enhanced the benzoic acid formation, especially on NZ loaded with 0.4 wt% of Cu (Cu-NZ) to produce 92 wt% of benzoic acid, by virtue of the presence of highly dispersed nano particles of CuO along with Cu⁺² ions on the high surface area, mesopore possessing NZ support, revealed from XRD, N₂ adsorption-desorption, XPS, SEM, TEM, FITR, TPR and TPD analysis.

Original language	English
Pages (from-to)	37-48
Number of pages	12
Journal	Materials Today Chemistry
Volume	3
DOIs	https://doi.org/10.1016/j.mtchem.2017.01.001
Publication status	Published - Mar 1 2017

Keywords

Cu loading
Mesoporosity
Nano crystalline ZSM-5
Toluene oxidation
Variable oxidation states

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Polymers and Plastics
Catalysis
Biomaterials
Colloid and Surface Chemistry

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10.1016/j.mtchem.2017.01.001

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title = "Cu functionalized nano crystalline ZSM-5 as efficient catalyst for selective oxidation of toluene",

abstract = "Nano crystalline ZSM-5 (NZ) functionalized with Cu has been explored for the selective oxidation of toluene to benzoic acid for the first time, where a comparison is made with the traditional microcrystalline ZSM-5 (MZ) based catalyst having similar framework Si/Al ratios at organic solvent-less reaction conditions in presence of H2O2 as a green oxidant. The ZSM-5 catalysts exhibited oxidation property even in the absence of any Cu species, but with low toluene conversions and benzoic acid yields. Functionalization with Cu greatly enhanced the benzoic acid formation, especially on NZ loaded with 0.4 wt% of Cu (Cu-NZ) to produce 92 wt% of benzoic acid, by virtue of the presence of highly dispersed nano particles of CuO along with Cu+2 ions on the high surface area, mesopore possessing NZ support, revealed from XRD, N2 adsorption-desorption, XPS, SEM, TEM, FITR, TPR and TPD analysis.",

keywords = "Cu loading, Mesoporosity, Nano crystalline ZSM-5, Toluene oxidation, Variable oxidation states",

author = "N. Viswanadham and Saxena, {Sandeep K.} and Al-Muhtaseb, {Ala'a H.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = mar,

day = "1",

doi = "10.1016/j.mtchem.2017.01.001",

language = "English",

volume = "3",

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journal = "Materials Today Chemistry",

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TY - JOUR

T1 - Cu functionalized nano crystalline ZSM-5 as efficient catalyst for selective oxidation of toluene

AU - Viswanadham, N.

AU - Saxena, Sandeep K.

AU - Al-Muhtaseb, Ala'a H.

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Nano crystalline ZSM-5 (NZ) functionalized with Cu has been explored for the selective oxidation of toluene to benzoic acid for the first time, where a comparison is made with the traditional microcrystalline ZSM-5 (MZ) based catalyst having similar framework Si/Al ratios at organic solvent-less reaction conditions in presence of H2O2 as a green oxidant. The ZSM-5 catalysts exhibited oxidation property even in the absence of any Cu species, but with low toluene conversions and benzoic acid yields. Functionalization with Cu greatly enhanced the benzoic acid formation, especially on NZ loaded with 0.4 wt% of Cu (Cu-NZ) to produce 92 wt% of benzoic acid, by virtue of the presence of highly dispersed nano particles of CuO along with Cu+2 ions on the high surface area, mesopore possessing NZ support, revealed from XRD, N2 adsorption-desorption, XPS, SEM, TEM, FITR, TPR and TPD analysis.

AB - Nano crystalline ZSM-5 (NZ) functionalized with Cu has been explored for the selective oxidation of toluene to benzoic acid for the first time, where a comparison is made with the traditional microcrystalline ZSM-5 (MZ) based catalyst having similar framework Si/Al ratios at organic solvent-less reaction conditions in presence of H2O2 as a green oxidant. The ZSM-5 catalysts exhibited oxidation property even in the absence of any Cu species, but with low toluene conversions and benzoic acid yields. Functionalization with Cu greatly enhanced the benzoic acid formation, especially on NZ loaded with 0.4 wt% of Cu (Cu-NZ) to produce 92 wt% of benzoic acid, by virtue of the presence of highly dispersed nano particles of CuO along with Cu+2 ions on the high surface area, mesopore possessing NZ support, revealed from XRD, N2 adsorption-desorption, XPS, SEM, TEM, FITR, TPR and TPD analysis.

KW - Cu loading

KW - Mesoporosity

KW - Nano crystalline ZSM-5

KW - Toluene oxidation

KW - Variable oxidation states

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DO - 10.1016/j.mtchem.2017.01.001

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JO - Materials Today Chemistry

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ER -

Cu functionalized nano crystalline ZSM-5 as efficient catalyst for selective oxidation of toluene

Abstract

Keywords

ASJC Scopus subject areas

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