Influence of Brønsted acid sites on chemoselective synthesis of pyrrolidones over H-ZSM-5 supported copper catalyst

Venu Boosa; Shirisha Varimalla; Mahesh Dumpalapally; Naresh Gutta; Vijay Kumar Velisoju; Narender Nama; Venugopal Akula

doi:10.1016/j.apcatb.2021.120177

Influence of Brønsted acid sites on chemoselective synthesis of pyrrolidones over H-ZSM-5 supported copper catalyst

Venu Boosa, Shirisha Varimalla, Mahesh Dumpalapally, Naresh Gutta, Vijay Kumar Velisoju, Narender Nama, Venugopal Akula

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

37 Scopus citations

Abstract

Cu(0)/H-ZSM-5 was identified as a chemoselective catalyst in the reductive amination of levulinic acid for the synthesis of pyrrolidones at ambient pressure and in aqueous media. The chemoselective nature of Cu was explained by carbonyl interaction with surface Brønsted acid sites deduced by pyridine and acetone adsorbed in situ infrared (IR) spectroscopic studies in conjunction with N2O titration. A strong polarization of band at 1685 cm−1 and an increase in its intensity with a decrease in Si/Al ratio of the H-ZSM-5 was found to be a key factor in the reductive amination activity. Structure activity relationship was established using the physicochemical characteristics of the catalysts analyzed by XRD, BET-SA, H2-TPR, NH3-TPD and XPS analyses.

Original language	English (US)
Journal	Applied Catalysis B: Environmental
Volume	292
DOIs	https://doi.org/10.1016/j.apcatb.2021.120177
State	Published - Sep 5 2021
Externally published	Yes

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Generated from Scopus record by KAUST IRTS on 2023-10-23

ASJC Scopus subject areas

General Environmental Science
Catalysis
Process Chemistry and Technology

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10.1016/j.apcatb.2021.120177

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title = "Influence of Br{\o}nsted acid sites on chemoselective synthesis of pyrrolidones over H-ZSM-5 supported copper catalyst",

abstract = "Cu(0)/H-ZSM-5 was identified as a chemoselective catalyst in the reductive amination of levulinic acid for the synthesis of pyrrolidones at ambient pressure and in aqueous media. The chemoselective nature of Cu was explained by carbonyl interaction with surface Br{\o}nsted acid sites deduced by pyridine and acetone adsorbed in situ infrared (IR) spectroscopic studies in conjunction with N2O titration. A strong polarization of band at 1685 cm−1 and an increase in its intensity with a decrease in Si/Al ratio of the H-ZSM-5 was found to be a key factor in the reductive amination activity. Structure activity relationship was established using the physicochemical characteristics of the catalysts analyzed by XRD, BET-SA, H2-TPR, NH3-TPD and XPS analyses.",

author = "Venu Boosa and Shirisha Varimalla and Mahesh Dumpalapally and Naresh Gutta and Velisoju, {Vijay Kumar} and Narender Nama and Venugopal Akula",

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doi = "10.1016/j.apcatb.2021.120177",

language = "English (US)",

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journal = "Applied Catalysis B: Environmental",

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AU - Boosa, Venu

AU - Varimalla, Shirisha

AU - Dumpalapally, Mahesh

AU - Gutta, Naresh

AU - Velisoju, Vijay Kumar

AU - Nama, Narender

AU - Akula, Venugopal

N1 - Generated from Scopus record by KAUST IRTS on 2023-10-23

PY - 2021/9/5

Y1 - 2021/9/5

N2 - Cu(0)/H-ZSM-5 was identified as a chemoselective catalyst in the reductive amination of levulinic acid for the synthesis of pyrrolidones at ambient pressure and in aqueous media. The chemoselective nature of Cu was explained by carbonyl interaction with surface Brønsted acid sites deduced by pyridine and acetone adsorbed in situ infrared (IR) spectroscopic studies in conjunction with N2O titration. A strong polarization of band at 1685 cm−1 and an increase in its intensity with a decrease in Si/Al ratio of the H-ZSM-5 was found to be a key factor in the reductive amination activity. Structure activity relationship was established using the physicochemical characteristics of the catalysts analyzed by XRD, BET-SA, H2-TPR, NH3-TPD and XPS analyses.

AB - Cu(0)/H-ZSM-5 was identified as a chemoselective catalyst in the reductive amination of levulinic acid for the synthesis of pyrrolidones at ambient pressure and in aqueous media. The chemoselective nature of Cu was explained by carbonyl interaction with surface Brønsted acid sites deduced by pyridine and acetone adsorbed in situ infrared (IR) spectroscopic studies in conjunction with N2O titration. A strong polarization of band at 1685 cm−1 and an increase in its intensity with a decrease in Si/Al ratio of the H-ZSM-5 was found to be a key factor in the reductive amination activity. Structure activity relationship was established using the physicochemical characteristics of the catalysts analyzed by XRD, BET-SA, H2-TPR, NH3-TPD and XPS analyses.

UR - https://linkinghub.elsevier.com/retrieve/pii/S0926337321003039

UR - http://www.scopus.com/inward/record.url?scp=85103734454&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2021.120177

DO - 10.1016/j.apcatb.2021.120177

M3 - Article

SN - 0926-3373

VL - 292

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Influence of Brønsted acid sites on chemoselective synthesis of pyrrolidones over H-ZSM-5 supported copper catalyst

Abstract

Bibliographical note

ASJC Scopus subject areas

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