Alkali-Free Zn-Al Layered Double Hydroxide Catalysts for Triglyceride Transesterification

Nazrizawati A. Tajuddin; Jinesh C. Manayil; Mark A. Isaacs; Christopher M. A. Parlett; Adam F. Lee; Karen Wilson

doi:10.3390/catal8120667

Alkali-Free Zn-Al Layered Double Hydroxide Catalysts for Triglyceride Transesterification

Nazrizawati A. Tajuddin, Jinesh C. Manayil, Mark A. Isaacs, Christopher M. A. Parlett, Adam F. Lee, Karen Wilson

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

Abstract

Zn–Al layered double hydroxides (LDHs) of general formula [Zn2+(1−x)Al3+x(OH)2]x+(CO32−)x/2·yH2O are promising solid base catalysts for the transesterification of lipids to biofuels. However, conventional synthetic routes employ alkali hydroxide/carbonate precipitants which may contaminate the final LDH catalyst and biofuel. The use of (NH3)2CO3 and NH3OH as precipitants affords alkali-free Zn–Al-LDHs spanning a wide composition range. The hydrothermal reconstruction of calcined Zn–Al-LDHs offers superior solid basicity and catalytic activity for the transesterification of C4–C18 triglycerides with methanol, compared with cold liquid phase or vapour phase reconstruction. Hydrothermally activated Zn3.3–Al-LDH was stable towards leaching during transesterification

Original language	English
Journal	Catalysts
Volume	8
Issue number	12
DOIs	https://doi.org/10.3390/catal8120667
Publication status	Published - Dec 2018

Keywords

biodiesel
layered double hydroxides
transesterification
solid base
triglycerides

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/catal8120667

UoMaH: The University of Manchester at Harwell
Lawrence, J. (PI), Burnett, T. (PI), Baker, M. (Researcher), Eastwood, D. (Researcher), Falkowska, M. (Researcher), Freitas, D. (Researcher), Hunt, S. (Researcher), Khan, A. (Researcher), Lane, H. (Researcher), Lezcano Gonzalez, I. (Researcher), Ma, L. (Researcher), Mirihanage, W. (Researcher), Parlett, C. (Researcher), Xu, S. (Researcher), Yan, K. (Researcher), Reinhard, C. (Support team), Brooke, E. (Supervisor), Duggins, D. (Technical team), Lewis-Fell, J. (Technical team), Nonni, S. (Technical team), Rollings, B. (Technical team), Sinclair, L. (Technical team) & Batts, S. (Support team)
1/01/18 → …
Project: Other

Cite this

@article{f672a5ce09654172ad0c375f7a49156d,

title = "Alkali-Free Zn-Al Layered Double Hydroxide Catalysts for Triglyceride Transesterification",

abstract = "Zn–Al layered double hydroxides (LDHs) of general formula [Zn2+(1−x)Al3+x(OH)2]x+(CO32−)x/2·yH2O are promising solid base catalysts for the transesterification of lipids to biofuels. However, conventional synthetic routes employ alkali hydroxide/carbonate precipitants which may contaminate the final LDH catalyst and biofuel. The use of (NH3)2CO3 and NH3OH as precipitants affords alkali-free Zn–Al-LDHs spanning a wide composition range. The hydrothermal reconstruction of calcined Zn–Al-LDHs offers superior solid basicity and catalytic activity for the transesterification of C4–C18 triglycerides with methanol, compared with cold liquid phase or vapour phase reconstruction. Hydrothermally activated Zn3.3–Al-LDH was stable towards leaching during transesterification",

keywords = "biodiesel, layered double hydroxides, transesterification, solid base, triglycerides",

author = "Tajuddin, \{Nazrizawati A.\} and Manayil, \{Jinesh C.\} and Isaacs, \{Mark A.\} and Parlett, \{Christopher M. A.\} and Lee, \{Adam F.\} and Karen Wilson",

year = "2018",

month = dec,

doi = "10.3390/catal8120667",

language = "English",

volume = "8",

journal = "Catalysts",

issn = "2073-4344",

publisher = "MDPI",

number = "12",

}

TY - JOUR

T1 - Alkali-Free Zn-Al Layered Double Hydroxide Catalysts for Triglyceride Transesterification

AU - Tajuddin, Nazrizawati A.

AU - Manayil, Jinesh C.

AU - Isaacs, Mark A.

AU - Parlett, Christopher M. A.

AU - Lee, Adam F.

AU - Wilson, Karen

PY - 2018/12

Y1 - 2018/12

N2 - Zn–Al layered double hydroxides (LDHs) of general formula [Zn2+(1−x)Al3+x(OH)2]x+(CO32−)x/2·yH2O are promising solid base catalysts for the transesterification of lipids to biofuels. However, conventional synthetic routes employ alkali hydroxide/carbonate precipitants which may contaminate the final LDH catalyst and biofuel. The use of (NH3)2CO3 and NH3OH as precipitants affords alkali-free Zn–Al-LDHs spanning a wide composition range. The hydrothermal reconstruction of calcined Zn–Al-LDHs offers superior solid basicity and catalytic activity for the transesterification of C4–C18 triglycerides with methanol, compared with cold liquid phase or vapour phase reconstruction. Hydrothermally activated Zn3.3–Al-LDH was stable towards leaching during transesterification

AB - Zn–Al layered double hydroxides (LDHs) of general formula [Zn2+(1−x)Al3+x(OH)2]x+(CO32−)x/2·yH2O are promising solid base catalysts for the transesterification of lipids to biofuels. However, conventional synthetic routes employ alkali hydroxide/carbonate precipitants which may contaminate the final LDH catalyst and biofuel. The use of (NH3)2CO3 and NH3OH as precipitants affords alkali-free Zn–Al-LDHs spanning a wide composition range. The hydrothermal reconstruction of calcined Zn–Al-LDHs offers superior solid basicity and catalytic activity for the transesterification of C4–C18 triglycerides with methanol, compared with cold liquid phase or vapour phase reconstruction. Hydrothermally activated Zn3.3–Al-LDH was stable towards leaching during transesterification

KW - biodiesel

KW - layered double hydroxides

KW - transesterification

KW - solid base

KW - triglycerides

U2 - 10.3390/catal8120667

DO - 10.3390/catal8120667

M3 - Article

SN - 2073-4344

VL - 8

JO - Catalysts

JF - Catalysts

IS - 12

ER -

Alkali-Free Zn-Al Layered Double Hydroxide Catalysts for Triglyceride Transesterification

Abstract

Keywords

UN SDGs

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Projects

UoMaH: The University of Manchester at Harwell

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