Biomass to fuels:: A water-free process for biodiesel production with phosphazene catalysts

被引:11
作者
Cerro-Alarcon, Miriam [1 ]
Corma, Avelino [1 ]
Iborra, Sara [1 ]
Gomez, Juan Pedro [2 ]
机构
[1] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Valencia 46022, Spain
[2] Ctr Invest Repsol YPF, Madrid 28931, Spain
关键词
biomass to fuels; biodiesel; transesterification; alcoholysis; organocatalysis; phosphazene catalyst;
D O I
10.1016/j.apcata.2008.05.002
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
Non-ionic triamino(imino)phosphoranes (phosphazenes) give excellent results as base catalysts for the water-free alcoholysis of vegetable fatty esters. Two phosphazene catalysts, with different intrinsic basicities, P-1-t-Bu and P-4-t-Bu, together with reaction parameters, such as temperature, alcohol/oil molar ratio, or catalyst concentration, have been studied. It was found that activity can be directly correlated to the basicity of the catalyst. Very high biodiesel yields (93-95% mol) were achieved under mild reaction conditions with methanol and ethanol. The catalyst can be recovered and recycled. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:52 / 57
页数:6
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