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Optimization of microwave-assisted esterification of succinic acid using Box-Behnken design approach

  • Chemical Sciences in Sustainable Technology and Development
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Abstract

Esters of butanedioic acid (succinic acid) are appealing renewable esters as fuel additives and solvents. In the present study, we have investigated reaction routes for the esterification of succinic acid (SA) with alcohols like methanol (MeOH), ethanol (EtOH), and 2-propanol (2-PrOH) using heterogeneous catalyst D-Hβ (moderate Bronsted acidity) in a microwave (MW)-irradiated reactor to increase yield and minimize waste generation. Using the Box-Behnken design (BBD) approach, operating parameters such as reaction time, microwave power, and catalyst dosing were optimized for SA esterification with MeOH. At optimum conditions using D-Hβ catalyst, 99% maximum conversion was achieved with 98% selectivity of dimethyl succinate (DMS). At optimum conditions, the esterification of SA with EtOH and 2-PrOH was also performed. The use of D-Hβ is economically more advantageous as it can be reused directly without any prior washing and also showed significant activity.

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Authors are agreed to, wherever possible and applicable, deposit data that support the findings of their research in a public repository.

Abbreviations

MW:

Microwave

SA:

Succinic acid

DMS:

Dimethyl succinate

DES:

Diethyl succinate

D-n-PS:

Di-n-propyl succinate

DIPS:

Diisopropyl succinate

MWI:

Microwave irradiation

GCMS:

Gas chromatography-mass spectroscopy

SAN:

Succinic anhydride

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Acknowledgements

We are thankful to the Department of Chemical Engineering, SCET, and SVNIT for the project work. We are grateful to the Sophisticated Analytical Instrument Facility (SAIF) IIT-Bombay for the GCMS analysis.

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All authors whose names appear on the submission.

1. Dr. Vaishali Umrigar made substantial contributions to the conception or design of the work; or the acquisition, analysis, or interpretation of data; or the use of software in the work;

2. Dr. Vaishali Umrigar and Prof. Mousumi Chakraborty drafted the work or revised it critically for important intellectual content;

3. Prof. Chakraborty and Prof. Parikh approved the version to be published; and.

4. All agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

Corresponding author

Correspondence to Vaishali Umrigar.

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• The manuscript is not submitted to more than one journal for simultaneous consideration.

• The submitted work is original and should not have been published elsewhere in any form or language (partially or in full).

• A single study has not been split up.

• Results are presented clearly, honestly, and without fabrication, falsification, or inappropriate data manipulation (including image-based manipulation). Authors adhere to discipline-specific rules for acquiring, selecting, and processing data.

• No data, text, or theories by others are presented as if they were the author’s own (“plagiarism”). Proper acknowledgments to other works are given.

• We are thankful to the Department of Chemical Engineering, SCET, and SVNIT for the project work. We are grateful to the Sophisticated Analytical Instrument Facility (SAIF) IIT-Bombay for the GCMS analysis.

Consent to participate

This presentation is submitted with respect to the author’s virtual participation in the 2nd IC2S2TD-2021 and invitation to publish this work as a special issue in Environmental Science and Pollution Research as “SI: CSSTD-2021.”

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Competing interests

Interests related to the submitted work are as follows.

1. Further operating parameters can be optimized with different design and optimization tools to avoid trial and error.

2. Scale-up can be done for further implementation of the production of such biofuel’s additives to commercialize the products.

3. Extraction of carboxylic acids from natural resources can be further worked out.

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Umrigar, V., Chakraborty, M. & Parikh, P.A. Optimization of microwave-assisted esterification of succinic acid using Box-Behnken design approach. Environ Sci Pollut Res 30, 71472–71481 (2023). https://doi.org/10.1007/s11356-022-22807-1

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  • DOI: https://doi.org/10.1007/s11356-022-22807-1

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