Highly effective MnCeOx catalysts for biodiesel production by transesterification of vegetable oils with methanol

被引：53
作者：
Cannilla, C. [2 ]
Bonura, G. [1 ]
Rombi, E. [3 ]
Arena, F. [1 ,2 ]
Frusteri, F. [1 ,2 ]
机构：
[1] CNR ITAE Nicola Giordano, I-98126 Messina, Italy
[2] Univ Messina, Dip Chim Ind & Ing Mat, I-98166 Messina, Italy
[3] Univ Cagliari, Dip Sci Chim, CSGI, I-09042 Cagliari, Italy
来源：
APPLIED CATALYSIS A-GENERAL | 2010年 / 382卷 / 02期
关键词：
Biodiesel; Transesterification reaction; Heterogeneous (liquid-solid) catalysis; Ceria-manganese catalysts; SOLID ACID CATALYSTS; FREE FATTY-ACIDS; SOYBEAN OIL; RECENT TRENDS; BASE; ESTERIFICATION; OPTIMIZATION; PROGRESS; PHASE; BATCH;
D O I：
10.1016/j.apcata.2010.04.031
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This paper reports the results obtained using a novel MnCeOx system in the transesterification reaction of refined sunflower oil with methanol. The performance of such catalysts has been compared with that of common acid supported catalysts. Results obtained revealed that MnCeOx system possesses a superior activity especially by operating at low temperatures (<= 120 degrees C). Independently of Mn loading, the redox-precipitation method for the preparation of Mn-based systems allowed to obtain always high dispersed catalysts and, as a consequence, a linear relationship between reaction rate and Mn loading was obtained. NH3-TPD and CO2-TPD measurements indicate that MnCeOx systems are characterized by a prevalent nature of basic sites. However, the catalyst performance is the result of a synergic role played by both the surface acid/base character and textural porosity. (c) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：158 / 166
页数：9
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