煤矸石合成NaX型分子筛及其对溶液中Cd^(2+)离子的吸附行为  

Synthesis of NaX Molecular Sieve from Coal Gangue and Its Adsorption Characteristics for Cd^(2+)in Solution

作　　者：姜夏烨 陈彭军 凌洁 程瑜 程一钧 田冬[2,3] JIANG Xiaye;CHEN Pengjun;LING Jie;CHENG Yu;CHENG Yijun;TIAN Dong(Technical Innovation Center for Ecological Improvement and Sustainable Utilization of Coastal Saline-Alkali Land,Ministry of Natural Resources,Marine Geological Survey of Jiangsu Province,Nanjing,210007,China;Anhui Key Laboratory of Low Temperature Co-Fired Material,Huainan Normal University,Huainan 232038,China;School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232038,China)

机构地区：[1]江苏省海洋地质调查院自然资源部滨海盐碱地生态改良与可持续利用工程技术创新中心,江苏南京210007 [2]淮南师范学院安徽省低温共烧材料重点实验室,安徽淮南232038 [3]安徽理工大学材料科学与工程学院,安徽淮南232038

出　　处：《河南化工》2025年第3期14-17,37,共5页Henan Chemical Industry

基　　金：安徽省重点研究与计划开发项目(201904a07020002);安徽省高校优秀创新团队项目(2024AH010028)。

摘　　要：针对煤矸石的高值资源化利用难题,采用碱熔融水热法制备了煤矸石基NaX型分子筛,考察了碱用量、晶化温度、晶化时间等参数对合成结果的影响,采用X射线衍射、扫描电子显微镜对样品的结构和形貌进行了表征。探究了分子筛对水溶液中Cd^(2+)离子的吸附行为,研究了分子筛用量及Cd^(2+)离子溶液浓度不同时的吸附影响。结果表明,在煤矸石质量与氢氧化钠质量比值为1∶1,煅烧温度设置为550℃,晶化时间设置为48 h,晶化温度设置为100℃时合成条件的分子筛质量最好。Aiming at the problem of high value resource utilization of coal gangue,coal gangue-based NaX molecular sieves are prepared by alkali fusion hydrothermal method.The effects of various factors on the crystalline products are investigated,including alkali rate,crystallization temperature and time.The structure and morphology are characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The adsorption performance of Cd^(2+)ion is investigated in solution for the synthesized NaX molecular sieve.The adsorption effects of different amount of molecular sieve and concentration of Cd^(2+)ion in solution are studied.The results show that the optimum synthesis conditions to get NaX molecular sieve are mass rate of m(coal gangue)∶m(alkali)=1∶1,fusion temperature at 550℃,crystallizing at 100℃for 48 h.

关 键 词：煤矸石 NaX分子筛 水热晶化反应 Cd^(2+)离子 吸附 

分 类 号：TQ426.98[化学工程]