石油化工2012，Vol.41Issue(12)：1368-1372,5.
分离液体石蜡的5A分子筛吸附剂的制备
Preparation of 5A Molecular Sieve Absorbent for Separation of Liquid Paraffin
奚瀚 1陈乐 1陈群 1何明阳1
作者信息
- 1. 常州大学石油化工学院江苏省精细石油化工重点实验室,江苏 常州 213164
- 折叠
摘要
Abstract
Several 5A molecular sieves were synthesized by a hydrothermal method and used in the adsorption of liquid paraffin. The results showed that under the optimum crystallization conditions of crystallization temperature 85 V, and crystallization time 4 h, the adsorptivity of the 5A molecular sieves with n(Na2O) : n(H2O) 12 : 600 was the best with the static adsorption capacities of 0.082 g/g for w-decane and 0.148 g/g for n-pentadecane. The characterization results showed the large effect of n(Na2O) : n(H2O) on the crystal size of the 5A molecular sieves. High n(Na2O) : n(H2O) can lead to small crystal grains, but too high alkalinity may result in the metastable crystal collapse and the crystal pore blocking. The effects of the crystal microstructure on the static saturated adsorption capacity and adsorption rate of the 5 A molecular sieves are large. There are micropores and mesoporores on the 5 A molecular sieves with n(Na2O) : n(H2O) 12 : 600, so its static saturated adsorption capacity is larger. The adsorption rate increases with the increase of the specific surface areas of the 5 A molecular sieves.关键词
5A分子筛/吸附剂/液体石蜡/正癸烷/正十五烷/吸附分离Key words
5A molecular sieve/ adsorbent/ liquid paraffin/ w-decane/ w-pentadecane/adsorption separation分类
化学化工引用本文复制引用
奚瀚,陈乐,陈群,何明阳..分离液体石蜡的5A分子筛吸附剂的制备[J].石油化工,2012,41(12):1368-1372,5.
