摘要
在酸性催化剂存在的条件下,由石蜡和微晶蜡的混合物催化氧化反应,再经物理调和,合成天然巴西棕榈蜡替代品。并利用正交实验对反应条件进行了分析,得出最佳生产工艺:石蜡和微晶蜡的质量比为4∶1,催化剂的质量分数为1%,助剂的质量分数为1.6%,反应时间为8 h,空气流量为1.25 m3/h,反应温度为170℃。经物理调和后产品的酸值为12.93 mg(KOH)/g,皂化值为82.71 mg(KOH)/g,折光率(75℃)为1.445 2,熔点为82.1℃,与天然产品的性质接近。
The substitute for the Carnauba wax was synthesized by catalytic oxidation of paraffin and microcrystalline under acidic catalyst and then using physical blending method. The effects of different factors on the reaction were discussed by orthogonal experiment method. The optimum technological condition is obtained： the mass ratio of mixed paraffin and microcrystalline is 4 ： 1, mass fraction of catalyst is 1.0 %, mass fraction of promoter is 1.6%, reaction time is 8 h, air flow rate is 1.25 m^3/h, reaction temperature is 170 ℃. After physical blending, acid number of the product is 12.93 mg（KOH）/g, saponification number is 82.71 mg（KOH）/g , index of refraction（75 ℃） is 1. 445 2, melting point is 82.1 ℃. The product is compared with natural carnauba wax, their characters are similar.
出处
《辽宁石油化工大学学报》
CAS
2007年第1期27-29,33,共4页
Journal of Liaoning Petrochemical University
关键词
天然巴西棕榈蜡
石蜡改性
催化氧化
Natural Carnauba wax
Modified paraffin
Catalytsis oxidation
