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Title: Syntheses of ZnO with Different Morphologies: Catalytic Activity toward Coumarin Synthesis via the Knoevenagel Condensation Reaction

Abstract

Heterogeneous catalysts are preferred in fine chemical industries due to their easy recovery and reusability. In this work, we report an easily scalable method of ZnO catalysts for coumarin synthesis. Nanocrystalline ZnO particles with diverse morphologies and crystallite sizes were prepared using different solvents. The change in morphology results in changes in band gaps, defects, basicity, and textural properties (surface areas, pore volumes, and pore sizes). The catalytic performances of the synthesized ZnO materials were tested using coumarin synthesis via the Knoevenagel condensation. The catalyst synthesized using methanol shows the highest activity and selectivity (conversion of 74%, selectivity of 94%) with a turnover number of 14.69. The increased activity of the ZnO synthesized in methanol is attributed to the combined effects of moderate basicity and relatively high textural properties of the sample.

Authors:
 [1];  [1];  [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of Connecticut, Storrs, CT (United States)
Publication Date:
Research Org.:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
1598193
Grant/Contract Number:  
FG02-86ER13622
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 58; Journal Issue: 9; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; morphology; oxides; alcohols; catalysts; materials

Citation Formats

Shakil, Md. R., Meguerdichian, Andrew G., Tasnim, Habiba, Shirazi-Amin, Alireza, Seraji, Mohammad S., and Suib, Steven L. Syntheses of ZnO with Different Morphologies: Catalytic Activity toward Coumarin Synthesis via the Knoevenagel Condensation Reaction. United States: N. p., 2019. Web. doi:10.1021/acs.inorgchem.9b00053.
Shakil, Md. R., Meguerdichian, Andrew G., Tasnim, Habiba, Shirazi-Amin, Alireza, Seraji, Mohammad S., & Suib, Steven L. Syntheses of ZnO with Different Morphologies: Catalytic Activity toward Coumarin Synthesis via the Knoevenagel Condensation Reaction. United States. doi:https://doi.org/10.1021/acs.inorgchem.9b00053
Shakil, Md. R., Meguerdichian, Andrew G., Tasnim, Habiba, Shirazi-Amin, Alireza, Seraji, Mohammad S., and Suib, Steven L. Tue . "Syntheses of ZnO with Different Morphologies: Catalytic Activity toward Coumarin Synthesis via the Knoevenagel Condensation Reaction". United States. doi:https://doi.org/10.1021/acs.inorgchem.9b00053. https://www.osti.gov/servlets/purl/1598193.
@article{osti_1598193,
title = {Syntheses of ZnO with Different Morphologies: Catalytic Activity toward Coumarin Synthesis via the Knoevenagel Condensation Reaction},
author = {Shakil, Md. R. and Meguerdichian, Andrew G. and Tasnim, Habiba and Shirazi-Amin, Alireza and Seraji, Mohammad S. and Suib, Steven L.},
abstractNote = {Heterogeneous catalysts are preferred in fine chemical industries due to their easy recovery and reusability. In this work, we report an easily scalable method of ZnO catalysts for coumarin synthesis. Nanocrystalline ZnO particles with diverse morphologies and crystallite sizes were prepared using different solvents. The change in morphology results in changes in band gaps, defects, basicity, and textural properties (surface areas, pore volumes, and pore sizes). The catalytic performances of the synthesized ZnO materials were tested using coumarin synthesis via the Knoevenagel condensation. The catalyst synthesized using methanol shows the highest activity and selectivity (conversion of 74%, selectivity of 94%) with a turnover number of 14.69. The increased activity of the ZnO synthesized in methanol is attributed to the combined effects of moderate basicity and relatively high textural properties of the sample.},
doi = {10.1021/acs.inorgchem.9b00053},
journal = {Inorganic Chemistry},
number = 9,
volume = 58,
place = {United States},
year = {2019},
month = {4}
}

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