Biphasic hydroformylation of monoterpenes employing Rh/TPPTS/CTAC: the role of the substrate in the mass transfer between the phases

被引：50
作者：
Barros, HJV
Hanson, BE
Gusevskaya, EV [1 ]
dos Santos, EN
机构：
[1] Univ Fed Minas Gerais, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil
[2] Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA
来源：
APPLIED CATALYSIS A-GENERAL | 2004年 / 278卷 / 01期
关键词：
terpene; hydroformylation; cationic surfactant; Rh/TPPTS; CTAC;
D O I：
10.1016/j.apcata.2004.09.025
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：
The rhodium catalyzed hydroformylation of myrcene, limonene and camphene is achieved in a toluene/water biphasic system employing tris(3-sulfonatophenyl)phosphine, trisodium salt (TPPTS) as ancillary ligand as a function of the cationic surfactant cetyltrimethylammonium chloride (CTAC-) concentration. In some cases the observed conversion rates were superior to the similar homogeneous systems. The promotion effect of CTAC and its optimal concentration depends on the conformational characteristics of the substrate. For myrcene, a pronounced promotion effect is observed for CTAC concentrations around 2.5 x 10(-2) M, whereas for camphene there is an inhibition effect even at concentrations as low as 2.5 x 10(-3) M. (C) 2004 Elsevier B.V. All rights reserved.
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页码：57 / 63
页数：7
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