几种天然斜发沸石矿的组成结构及性质对比研究  

Comparison of Compositions,Structures and Properties of Several Natural Clinoptilolite Zeolites

作　　者：王程[1,2] 冯锴 王李鹏 都扶岭 于倩茹 WANG Cheng;FENG Kai;WANG Lipeng;DU Fuling;YU Qianru(School of Material Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,Shaanxi,China;Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials,Xi’an 710021,Shaanxi,China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021 [2]陕西省无机材料绿色制备与功能化重点实验室,陕西西安710021

出　　处：《矿产保护与利用》2023年第2期148-153,共6页Conservation and Utilization of Mineral Resources

基　　金：陕西省重点研发计划项目(2022GY-163);陕西省教育厅服务地方专项项目(22JC020);咸阳市重点研发计划项目(S2021ZDYF-GY-0189)。

摘　　要：我国天然斜发沸石矿分布较广且储量丰富,具有巨大的开发利用价值。但由于成矿条件的差异,不同产地甚至同一产地不同区块天然斜发沸石的组成结构及诸多性质存在一定的差异,使其实际应用受到影响。因此,开展天然斜发沸石矿组成结构及性质的对比研究很有必要。选取河北一处(Z1)和辽宁两处(Z2和Z3)天然斜发沸石矿,研究并对比其组成、结构、pH值、阳离子交换容量以及重金属离子、水蒸气和甲醛的吸附效果。结果表明:三种天然沸石矿主要由斜发沸石、石英及少量方解石等矿物组成,含有SiO_(2)、Al_(2)O_(3)、K_(2)O、Na_(2)O、Fe_(2)O_(3)、MgO、TiO_(2)、CaO及少量重金属等成分,三者的矿物和化学组成存在一定差异。Z2样品表现出相对较好的重金属离子、水蒸气和甲醛气体吸附效果,其对Cd^(2+)、Cr^(3+)、水蒸气和甲醛气体的吸附容量分别为14.89 mg/g、6.65 mg/g、21.33 mg/g和7.12 mg/g,这与其具有更高的比表面积、介孔体积以及阳离子交换容量有关。该研究可为天然斜发沸石矿的评价、高效利用及环境应用提供一定的支持。The natural clinoptilolite ores in China are widely distributed and rich in reserves,which are of great value for development and utilization.However,due to the difference of mineralization conditions,the composition,structure and properties of natural clinoptilolite from different places or even from different blocks in the same place have some differences,which affects its practical application.Therefore,it is necessary to investigate and compare the composition,structure and properties of natural clinoptilolite ores.The natural clinoptilolite ores from one place in Hebei(Z1)and two places in Liaoning(Z2 and Z3)were selected to study and compare their composition,structure,pH value,cation exchange capacity,and adsorption properties on heavy metal ions,water vapor and formaldehyde vapor.The results showed that the three natural zeolites were mainly composed of clinoptilolite,quartz and a small amount of calcite,and they contained SiO_(2),Al_(2)O_(3),K_(2)O,Na_(2)O,Fe_(2)O_(3),MgO,TiO_(2),CaO and a small amount of heavy metals.There were some differences in the mineral and chemical composition of the three samples.The Z2 sample showed relatively high adsorption efficiency of heavy metal ions,water vapor and formaldehyde gas,with the adsorption capacities of Cd^(2+),Cr^(3+),water vapor and formaldehyde gas for 14.89 mg/g,6.65 mg/g,21.33 mg/g and 7.12 mg/g,respectively,and this was related to its higher specific surface area,mesoporous volume and cation exchange capacity.This study provides some support for the selection,efficient utilization and environmental application of natural clinoptilolite ores.

关 键 词：天然斜发沸石 比表面积 阳离子交换容量 水蒸气 甲醛气体 吸附容量 

分 类 号：TD91[矿业工程—选矿] TD985