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Rhus laccase catalysis and product characterization of 1,2-dimethoxyphenol in organic solutions 被引量:2
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作者 Yun Yang Wan Yu Min Du tetsuo miyakoshi 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第3期333-336,共4页
Dimethoxyphenol was a widely used substrate in determination of laccases activity. It was surprised, however, that the products of it had not been completely determined until now. Studies were thus conducted on Rhus l... Dimethoxyphenol was a widely used substrate in determination of laccases activity. It was surprised, however, that the products of it had not been completely determined until now. Studies were thus conducted on Rhus laccase (RL) and immobilized Rhus laccase (IRL)-catalyzed oxidation of 2,6-dimethoxyphenol (DMP) in water-organic solvent systems. Only one product, 3,3′,5,5′- tetramethoxy-1 ,1′-biphenyl-4,4′-diol (TMBP), was produced by RL catalysis, and it was thoroughly characterized by FT-IR, NMR and GC-MS, etc. 展开更多
关键词 Rhus laccase Laccase-catalyzed oxidation Organic solvents 2 6-Dimethoxyphenol
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Development and characterization of micro-dispersed lacquer 被引量:1
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作者 Tomohiro Moteki tetsuo miyakoshi 《中国生漆》 2010年第1期1-5,共5页
本文利用一种特制的搅拌装置来制备微分散生漆。研究了在不同的搅拌速率和搅拌时间下所获得的生漆微粒子的直径和性能的关系。粒度分布测定表明,经过60分钟且每分钟240转搅拌处理的生漆,其粒子直径分布最窄,平均为0.194微米。凝胶色谱(G... 本文利用一种特制的搅拌装置来制备微分散生漆。研究了在不同的搅拌速率和搅拌时间下所获得的生漆微粒子的直径和性能的关系。粒度分布测定表明,经过60分钟且每分钟240转搅拌处理的生漆,其粒子直径分布最窄,平均为0.194微米。凝胶色谱(GPC)分析显示生漆中的寡聚体增加的同时单体的百分含量减少了,意味着在搅拌的过程中发生了聚合反应。另外,微分散生漆的粘度、干燥成膜时间、膜亮度、膜颜色、膜光泽以及耐紫外线等特性也作了深入的探讨。 展开更多
关键词 搅拌装置 微粒子 分散 分析
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