Kinetic studies on biodiesel production using a trace acid catalyst

Yingying Liu; Houfang Lu; Kwesi Ampong-Nyarko; Tanya Macdonald; Lawrence L Tavlarides; Shijie Liu; Bin Liang

doi:10.1016/j.cattod.2015.07.004

Kinetic studies on biodiesel production using a trace acid catalyst

Yingying Liu, Houfang Lu, Kwesi Ampong-Nyarko, Tanya Macdonald, Lawrence L Tavlarides, Shijie Liu, Bin Liang

Department of Biomedical & Chemical Engineering

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

13 Scopus citations

Abstract

Biodiesel was produced by transesterification in the presence of trace sulfuric acid (0.02-0.1 wt% of oil mass). The kinetics for the transesterification of corn oil with ethanol was investigated between 155-195 °C. The transesterification in the pseudo-homogeneous system consisted of three consecutive steps. All steps were found to be second order reactions, with the first and the second steps being irreversible, while the third step was reversible. It was observed that the apparent rate constants of the forward reactions increased linearly with increasing acid concentration. Compared to the initial two steps of the ethanolysis reaction, the effect of the reversible transformation in the third step is significant, as the conversion of monoglyceride to glycerol is difficult. In addition, the presence of free fatty acids (

Original language	English (US)
Pages (from-to)	55-62
Number of pages	8
Journal	Catalysis Today
Volume	264
DOIs	https://doi.org/10.1016/j.cattod.2015.07.004
State	Published - Apr 15 2016

Keywords

Biodiesel
Corn oil
Kinetics
Pennycress oil
Trace acid catalyst
Transesterification

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1016/j.cattod.2015.07.004

Cite this

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title = "Kinetic studies on biodiesel production using a trace acid catalyst",

abstract = "Biodiesel was produced by transesterification in the presence of trace sulfuric acid (0.02-0.1 wt% of oil mass). The kinetics for the transesterification of corn oil with ethanol was investigated between 155-195 °C. The transesterification in the pseudo-homogeneous system consisted of three consecutive steps. All steps were found to be second order reactions, with the first and the second steps being irreversible, while the third step was reversible. It was observed that the apparent rate constants of the forward reactions increased linearly with increasing acid concentration. Compared to the initial two steps of the ethanolysis reaction, the effect of the reversible transformation in the third step is significant, as the conversion of monoglyceride to glycerol is difficult. In addition, the presence of free fatty acids (",

keywords = "Biodiesel, Corn oil, Kinetics, Pennycress oil, Trace acid catalyst, Transesterification",

author = "Yingying Liu and Houfang Lu and Kwesi Ampong-Nyarko and Tanya Macdonald and Tavlarides, {Lawrence L} and Shijie Liu and Bin Liang",

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T1 - Kinetic studies on biodiesel production using a trace acid catalyst

AU - Liu, Yingying

AU - Lu, Houfang

AU - Ampong-Nyarko, Kwesi

AU - Macdonald, Tanya

AU - Tavlarides, Lawrence L

AU - Liu, Shijie

AU - Liang, Bin

PY - 2016/4/15

Y1 - 2016/4/15

N2 - Biodiesel was produced by transesterification in the presence of trace sulfuric acid (0.02-0.1 wt% of oil mass). The kinetics for the transesterification of corn oil with ethanol was investigated between 155-195 °C. The transesterification in the pseudo-homogeneous system consisted of three consecutive steps. All steps were found to be second order reactions, with the first and the second steps being irreversible, while the third step was reversible. It was observed that the apparent rate constants of the forward reactions increased linearly with increasing acid concentration. Compared to the initial two steps of the ethanolysis reaction, the effect of the reversible transformation in the third step is significant, as the conversion of monoglyceride to glycerol is difficult. In addition, the presence of free fatty acids (

AB - Biodiesel was produced by transesterification in the presence of trace sulfuric acid (0.02-0.1 wt% of oil mass). The kinetics for the transesterification of corn oil with ethanol was investigated between 155-195 °C. The transesterification in the pseudo-homogeneous system consisted of three consecutive steps. All steps were found to be second order reactions, with the first and the second steps being irreversible, while the third step was reversible. It was observed that the apparent rate constants of the forward reactions increased linearly with increasing acid concentration. Compared to the initial two steps of the ethanolysis reaction, the effect of the reversible transformation in the third step is significant, as the conversion of monoglyceride to glycerol is difficult. In addition, the presence of free fatty acids (

KW - Biodiesel

KW - Corn oil

KW - Kinetics

KW - Pennycress oil

KW - Trace acid catalyst

KW - Transesterification

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JO - Catalysis Today

JF - Catalysis Today

ER -

Kinetic studies on biodiesel production using a trace acid catalyst

Abstract

Keywords

ASJC Scopus subject areas

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