人工晶体学报2018，Vol.47Issue(2)：411-417,7.
粉煤灰基地质聚合物水热转化FAU型分子筛的工艺与表征
Process and Characterization of Zeolite FAU Transformed from Fly Ash-based Geopolymer via Hydrothermal Reaction
摘要
Abstract
Self-supporting zeolite FAU was synthesized from fly ash-based geopolymer via in-situ hydrothermal method.The effects of various factors, such as hydrothermal temperature, crystallization time,concentration and volume of sodium hydroxide(NaOH)on the crystallinity of zeolite FAU were investigated.Optimal conditions for the synthesis zeolite FAU from fly ash based geopolymer were determined to be:temperature 100 ℃, curing time,18 h in the 50 mL of 2.0 mol/L NaOH solution. The optimum zeolite FAU block show an octahedral shape with good crystallinity and basically inherited the main skeletal structure of geopolymer through XRD,SEM and FTIR analysis.The compress strength of zeolite FAU is 18.8 MPa with specific surface area of 175.31 m2/g.The in-situ hydrothermal method is a facile,environment-friendly method for the preparation of self-supporting zeolite.Moreover,different type of zeolites can be synthesized by controlling the raw material compositions and reaction conditions.关键词
粉煤灰基地质聚合物/水热法/原位转化/FAU型分子筛Key words
fly ash-based geopolymer/hydrothermal method/in-situ conversion/zeolite FAU分类
天文与地球科学引用本文复制引用
仇秀梅,刘亚东,严春杰,董学林..粉煤灰基地质聚合物水热转化FAU型分子筛的工艺与表征[J].人工晶体学报,2018,47(2):411-417,7.基金项目
湖北省地质局2017年科技项目(KJ2017-23) （KJ2017-23）
