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

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

biodiesel
layered double hydroxides
transesterification
solid base
triglycerides

Access to Document

10.3390/catal8120667

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

UR - https://www.scopus.com/pages/publications/85062421592

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

UN SDGs

Keywords

Access to Document

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UoMaH: The University of Manchester at Harwell

Cite this

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

Abstract

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Projects

UoMaH: The University of Manchester at Harwell

Cite this