摘要
研究松香的主要成分枞酸在磷钨酸季铵盐[π-C5H5N(CH2)15CH3]3PW12O40/H2O2催化反应体系中的氧化反应,考察催化剂用量、H2O2用量和反应温度对枞酸氧化转化率的影响,并通过紫外光谱、红外光谱以及气质联用谱对氧化产物进行结构表征。结果表明,在温和条件下,磷钨酸季铵盐能较好地催化过氧化氢对枞酸的氧化反应,枞酸的共轭双键已被破坏,枞酸氧化产物主要为脱氢枞酸、7-羟基-脱氢枞酸和7-羰基-脱氢枞酸;在本实验最佳的反应条件(枞酸5 mmol,催化剂0.084 g,30%H2O20.9 mL,温度30℃,反应时间5 h)下,枞酸的氧化转化率大于95%。
Oxidation reaction of abietic acid（one of the main components of rosin） in quaternary ammonium phosphotungstate [π-C5H5N（CH2）15CH3]3PW12O40 / H2O2 catalyst system was studied.Effects of dosage of catalyst,volume of H2O2,reaction temperature on conversion of abietic acid were investigated,and the composition and structure of oxidation product were analyzed by IR,UV and GC/MS spectra.The experimental results showed that oxidation reaction of abietic acid with H2O2 was easily carried out by using quaternary ammonium phosphotungstate as catalyst under normal conditions;dehydroabietic acid,7-hydroxy-dehydroabietic acid and 7-dicarbonyl-dehydroabietic acid as the main compositions of oxidation product were found,.more than 95 % conversion for oxidation of abietic acid was achieved under the optimum conditions（5 m mol of abietic acid,0.084 g of catalyst,0.9 mL of 30% of H2O2,temperature 30 ℃ and reaction time for 5 h）.
出处
《福建林业科技》
2009年第4期38-42,63,共6页
Journal of Fujian Forestry Science and Technology
基金
广西青年科学基金(桂科青0728016)
广西林产化学品开发与应用重点实验室开放基金(GXFC08-13)
广西高校人才小高地科研基金
关键词
磷钨酸季铵盐
过氧化氢
枞酸
催化氧化
quaternary ammonium phosphotungstate
hydrogen peroxide
abietic acid
catalysis and oxidation
