Kinetics of hydrolysis and methyl esterification for biodiesel production in two-step supercritical methanol process

被引：261

作者：

Minami, Eiji ^{[1
]}

Saka, Shiro ^{[1
]}

机构：

[1] Kyoto Univ, Dept Socio Environm Energy Sci, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

来源：

FUEL | 2006年 / 85卷 / 17-18期

关键词：

biodiesel; supercritical methanol; subcritical water;

D O I：

10.1016/j.fuel.2006.04.017

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

For high-quality biodiesel fuel production from oils/fats, the catalyst-free two-step supercritical methanol process has been developed in a previous work, which consists of hydrolysis of triglycerides to fatty acids in subcritical water and subsequent methyl esterification of fatty acids to their methyl esters in supercritical methanol. In this paper, therefore, kinetics in hydrolysis and subsequent methyl esterification was studied to elucidate reaction mechanism. As a result, fatty acid was found to act as acid catalyst, and simple mathematical models were proposed in which regression curves can fit well with experimental results. Fatty acid was, thus, concluded to play an important role in the two-step supercritical methanol process. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2479 / 2483

页数：5

共 10 条

[1]

BOOCOCK DGB, 2002, P KYOT U INT S POST, P171

[2] Kinetics of the non-catalytic transesterification of soybean oil [J].

Diasakou, M ;

Louloudi, A ;

Papayannakos, N .

FUEL, 1998, 77 (12) :1297-1302

[3] VARIABLES AFFECTING THE YIELDS OF FATTY ESTERS FROM TRANSESTERIFIED VEGETABLE-OILS [J].

FREEDMAN, B ;

PRYDE, EH ;

MOUNTS, TL .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1984, 61 (10) :1638-1643

[4] METHANOL THERMODYNAMIC PROPERTIES FROM 176-K TO 673-K AT PRESSURES TO 700-BAR [J].

GOODWIN, RD .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1987, 16 (04) :799-892

[5] Kinetics of transesterification in rapeseed oil to biodiesel fuel as treated in supercritical methanol [J].

Kusdiana, D ;

Saka, S .

FUEL, 2001, 80 (05) :693-698

[6] Two-step preparation for catalyst-free biodiesel fuel production - Hydrolysis and methyl esterification [J].

Kusdiana, D ;

Saka, S .

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2004, 113 (1-3) :781-791

[7] Methyl esterification of free fatty acids of rapeseed oil as treated in supercritical methanol [J].

Kusdiana, D ;

Saka, S .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2001, 34 (03) :383-387

[8] Synthesis of biodiesel via acid catalysis [J].

Lotero, E ;

Liu, YJ ;

Lopez, DE ;

Suwannakarn, K ;

Bruce, DA ;

Goodwin, JG .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (14) :5353-5363

[9] Biodiesel production from high FFA rubber seed oil [J].

Ramadhas, AS ;

Jayaraj, S ;

Muraleedharan, C .

FUEL, 2005, 84 (04) :335-340

[10] Biodiesel fuel from rapeseed oil as prepared in supercritical methanol [J].

Saka, S ;

Kusdiana, D .

FUEL, 2001, 80 (02) :225-231

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