煤系高岭土合成高结晶度nay沸石分子筛的研究.pdf

第37卷第1期非金属矿
2014年1月 Non-Metallic Mines January, 2014
煤系高岭土合成高结晶度NaY沸石分子筛的研究
吴建雄 刘 红 周志辉* 金 鸽 郭大鹏
(武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉 430081)
摘 要 以煤系高岭土为主要原料,采用水热法,通过外加导向剂合成高结晶度的 NaY 沸石分子筛。通过 XRD、SEM 和水静态饱和吸附测
定等手段对不同晶化时间下合成的产物进行分析,讨论了晶化时间对煤系高岭土合成高结晶度 NaY 分子筛的影响。结果表明,以煤系高岭土为原
料,向母液中添加导向剂,其中导向剂中 Al2O3 的量占母液 Al2O3 量的 5%,经过 6 h 陈化、50 ℃下预晶化 2 h 后,在 100 ℃下晶化 9 h 可合成出相对
结晶度高达 119%、晶粒分布均一、高纯度的 NaY 沸石分子筛。
关键词 煤系高岭土 导向剂 高结晶度  NaY 分子筛
中图分类号:;TD985 文献标识码:A 文章编号:1000-8098(2014)01-0036-04
Synthesis of NaY Zeolite with High Crystallinity from Coal-series Kaolin
Wu Jianxiong  Liu Hong  Zhou Zhihui*  Jin Ge  Guo Dapeng
(Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology,
Wuhan, Hubei  430081)
Abstract  In this paper, the high crystallinity NaY zeolite was synthesized using coal kaolinite as raw material. Hydrothermal synthesis
was used in the process and the directing agent was also added to the synthesis solutions. The solid reactant that obtained at different time interval
was characterized by XRD, SEM ,static water absorption to learn the effect of crystallization time to the growth process of high crystallinity NaY
zeolite synthesized from kaolinite . The results indicated that the optimum conditions of synthesis are additive amount of Al2O3 in the d