CTAB micelles and the hydroformylation of octene with rhodium/TPPTS catalysts - Evidence for the interaction of TPPTS with micelle surfaces

被引：60
作者：
Riisager, A
Hanson, BE [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA
[2] Tech Univ Denmark, Dept Chem, Interdisciplinary Res Ctr Catalysis, DK-2800 Lyngby, Denmark
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2002年 / 189卷 / 02期
关键词：
octene hydroformylation; rhodium/TPPTS; micelles; CTAB;
D O I：
10.1016/S1381-1169(02)00364-3
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 addition of cetyltrimethylammonium bromide (CTAB) to TPPTS/rhodium hydroformylation catalysts has a complicated effect on reaction activity and selectivity. In water alone as the solvent, high CTAB concentration leads to the formation of emulsions and reaction selectivity drops. In aqueous alcohol solvents selectivity also drops but the effect appears to be due to the solvent composition. Emulsion formation is minimized and initial reaction activity goes through a maximum at a CTAB/TPPTS ratio of 3. NMR studies show that there is a strong interaction of CTAB and TPPTS in water while the interaction in aqueous methanol appears to be nonspecific. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：195 / 202
页数：8
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