Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal

Mohammad Shahinur Rahaman; Thanh Khoa Phung; Md Anwar Hossain; Emtias Chowdhury; Sarttrawut Tulaphol; Shashi B. Lalvani; Martin O'Toole; Gerald A. Willing; Jacek B. Jasinski; Mark Crocker; Noppadon Sathitsuksanoh

doi:10.1016/j.apcata.2019.117369

Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal

Mohammad Shahinur Rahaman, Thanh Khoa Phung, Md Anwar Hossain, Emtias Chowdhury, Sarttrawut Tulaphol, Shashi B. Lalvani, Martin O'Toole, Gerald A. Willing, Jacek B. Jasinski, Mark Crocker, Noppadon Sathitsuksanoh

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

29 Scopus citations

Abstract

Production of solketal by glycerol acetalization is a promising pathway to add values to glycerol. Our evidence indicated that, initially, the reaction was limited by poor interfacial mass transfer. Acetone slowly diffused and solubilized in the glycerol phase, where it reached the catalyst's active sites to form solketal. We describe a strategy that overcomes this interfacial mass transfer limitation by grafting an organosilane surfactant (n-octadecyltrichlorosilane (OTS)) onto the surface of an HY catalyst. The OTS-grafted HY catalyst became hydrophobic and assisted in emulsion formation between the two immiscible reactants, minimizing the interfacial mass transfer limitation. As a result, the OTS-HY catalyst produced high catalytic activity (89% conversion) compared with that of HY (28% conversion) at 30 °C after 60 min. The high catalytic activity of organosilane-modified HY catalyst at low temperature makes it a promising candidate for other acid-catalysed two-phase reactions.

Original language	English
Article number	117369
Journal	Applied Catalysis A: General
Volume	592
DOIs	https://doi.org/10.1016/j.apcata.2019.117369
State	Published - Feb 25 2020

Bibliographical note

Funding Information:
A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville, which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS-1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript.

Funding Information:
A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville , which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS -1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript. Appendix A

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Emulsion
Glycerol acetalization
HY zeolites
Hydrophobic
Mass transfer
Solketal

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/j.apcata.2019.117369

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title = "Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal",

abstract = "Production of solketal by glycerol acetalization is a promising pathway to add values to glycerol. Our evidence indicated that, initially, the reaction was limited by poor interfacial mass transfer. Acetone slowly diffused and solubilized in the glycerol phase, where it reached the catalyst's active sites to form solketal. We describe a strategy that overcomes this interfacial mass transfer limitation by grafting an organosilane surfactant (n-octadecyltrichlorosilane (OTS)) onto the surface of an HY catalyst. The OTS-grafted HY catalyst became hydrophobic and assisted in emulsion formation between the two immiscible reactants, minimizing the interfacial mass transfer limitation. As a result, the OTS-HY catalyst produced high catalytic activity (89% conversion) compared with that of HY (28% conversion) at 30 °C after 60 min. The high catalytic activity of organosilane-modified HY catalyst at low temperature makes it a promising candidate for other acid-catalysed two-phase reactions.",

keywords = "Emulsion, Glycerol acetalization, HY zeolites, Hydrophobic, Mass transfer, Solketal",

author = "Rahaman, {Mohammad Shahinur} and Phung, {Thanh Khoa} and Hossain, {Md Anwar} and Emtias Chowdhury and Sarttrawut Tulaphol and Lalvani, {Shashi B.} and Martin O'Toole and Willing, {Gerald A.} and Jasinski, {Jacek B.} and Mark Crocker and Noppadon Sathitsuksanoh",

note = "Funding Information: A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville, which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS-1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript. Funding Information: A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville , which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS -1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript. Appendix A Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

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doi = "10.1016/j.apcata.2019.117369",

language = "English",

volume = "592",

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T1 - Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal

AU - Rahaman, Mohammad Shahinur

AU - Phung, Thanh Khoa

AU - Hossain, Md Anwar

AU - Chowdhury, Emtias

AU - Tulaphol, Sarttrawut

AU - Lalvani, Shashi B.

AU - O'Toole, Martin

AU - Willing, Gerald A.

AU - Jasinski, Jacek B.

AU - Crocker, Mark

AU - Sathitsuksanoh, Noppadon

N1 - Funding Information: A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville, which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS-1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript. Funding Information: A part of this material is based upon work supported by the National Science Foundation under Cooperative Agreement No. 1355438. This work was performed in part at the Conn Center for Renewable Energy Research at the University of Louisville , which belongs to the National Science Foundation NNCI KY Manufacturing and Nano Integration Node, supported by ECCS -1542174. The authors would like to thank Dr. Howard Fried for his valuable comments and suggestions on the manuscript. Appendix A Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/2/25

Y1 - 2020/2/25

N2 - Production of solketal by glycerol acetalization is a promising pathway to add values to glycerol. Our evidence indicated that, initially, the reaction was limited by poor interfacial mass transfer. Acetone slowly diffused and solubilized in the glycerol phase, where it reached the catalyst's active sites to form solketal. We describe a strategy that overcomes this interfacial mass transfer limitation by grafting an organosilane surfactant (n-octadecyltrichlorosilane (OTS)) onto the surface of an HY catalyst. The OTS-grafted HY catalyst became hydrophobic and assisted in emulsion formation between the two immiscible reactants, minimizing the interfacial mass transfer limitation. As a result, the OTS-HY catalyst produced high catalytic activity (89% conversion) compared with that of HY (28% conversion) at 30 °C after 60 min. The high catalytic activity of organosilane-modified HY catalyst at low temperature makes it a promising candidate for other acid-catalysed two-phase reactions.

AB - Production of solketal by glycerol acetalization is a promising pathway to add values to glycerol. Our evidence indicated that, initially, the reaction was limited by poor interfacial mass transfer. Acetone slowly diffused and solubilized in the glycerol phase, where it reached the catalyst's active sites to form solketal. We describe a strategy that overcomes this interfacial mass transfer limitation by grafting an organosilane surfactant (n-octadecyltrichlorosilane (OTS)) onto the surface of an HY catalyst. The OTS-grafted HY catalyst became hydrophobic and assisted in emulsion formation between the two immiscible reactants, minimizing the interfacial mass transfer limitation. As a result, the OTS-HY catalyst produced high catalytic activity (89% conversion) compared with that of HY (28% conversion) at 30 °C after 60 min. The high catalytic activity of organosilane-modified HY catalyst at low temperature makes it a promising candidate for other acid-catalysed two-phase reactions.

KW - Emulsion

KW - Glycerol acetalization

KW - HY zeolites

KW - Hydrophobic

KW - Mass transfer

KW - Solketal

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M3 - Article

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VL - 592

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ER -

Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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