论文部分内容阅读
研究了以水溶性铑 -膦配合物 Rh Cl(CO) (TPPTS) 2 为催化剂、三苯基膦三磺酸钠 (TPPTS)为配体 ,在阳离子表面活性剂十六烷基三甲基溴化铵 (CTAB)存在下、水 /有机物两相催化体系中 ,1-十二烯氢甲酰化反应与CTAB浓度的关系 .为了进一步揭示阳离子表面活性剂在该反应体系中的动力学作用机理 ,分别应用分光光度法和光散射法 ,测定了 1-十二烯在 CTAB胶束中的增溶曲线和铑 -膦配位催化剂、配体 TPPTS和 1-十二烯对 CTAB胶束摩尔质量的影响 .结果表明 ,阳离子表面活性剂对长链烯烃氢甲酰化两相催化反应具有加速作用 ,可能是由于 :(1)催化剂及配体吸附于胶束界面并富集 ;(2 )烯烃增溶于胶束内核 ,容易与催化活性物种发生配位反应
The effects of water-soluble rhodium-phosphine complex Rh Cl (CO) (TPPTS) 2 as catalyst and triphenylphosphine sodium trisulfonate (TPPTS) as ligand on the activity of cationic surfactant cetyl trimethyl bromide The relationship between 1-dodecene hydroformylation and CTAB concentration in aqueous / organic two-phase catalytic system in the presence of ammonium chloride (CTAB) In order to further reveal the kinetic mechanism of the cationic surfactant in the reaction system , The solubilization curves of 1-dodecene in CTAB micelles and the molar ratio of rhodium-phosphine coordination catalyst, ligand TPPTS and 1-dodecene to the molar mass of CTAB micelles were determined by spectrophotometry and light scattering respectively .The results show that the cationic surfactant accelerates the hydroformylation of long-chain olefins, which may be due to: (1) the catalyst and ligand are adsorbed on micellar interface and enriched; (2) Soluble in micellar core, easy to coordinate with the catalytically active species reaction