天然斜发沸石的改性及其对海水中K^+吸附交换容量的研究  

Study on Modification of Natural Clinoptilolite and Its Uptake of K^+ in Seawater

作　　者：纪志永[1] 袁俊生[1] 郭小甫[1] 

机构地区：[1]河北工业大学海水资源高效利用化工技术教育部工程研究中心,天津300130

出　　处：《材料导报》2011年第8期107-110,共4页Materials Reports

基　　金："十一五"科技支撑重大项目(2006BAB03A10);河北省科学技术研究与发展指导计划项目(07215184)

摘　　要：为提高天然斜发沸石对海水中K+的吸附交换容量,对天然沸石进行了电炉、微波和超声波加热物理改性以及微波化学改性研究。重点考察了不同微波功率和处理时间时盐改性以及不同微波化学改性条件下所得沸石对海水中K+的吸附交换容量,同时对不同改性沸石的晶体结构进行了XRD表征。结果表明,天然斜发沸石经微波盐改性后对海水中K+的吸附交换容量有所提高,并随微波处理功率的增加和时间的延长而增大;经微波化学改性后吸附交换容量显著提高,可达0.71mmol/g;各种改性方式未对沸石的结构构成破坏,所得改性沸石的晶体结构基本相似。For improve adsorption and ion exchange capacity of K＋ on clinoptilolite, modification of natural clinoptilolite was researched by using physical and chemical methods, which respectively applied electric oven, microwave and ultrasonic. Among them, the effect of some factors （microwave strength, time and chemical modification with microwave） on the K＋ uptake of modified clinoptilolite was mainly investigated. And the crystal structure of modified elinoptilolite was also characterized by XRD. The results show that the natural elinoptilolite modified with salts in the microwave has more uptake for K＋ in seawater, and the capacity can he improved with the power of microwave and modified time increasing; chemical modification with microwave can furhter enhance the capacity, and the uptake of K＋ can reach 0. 71mmol/g in the optimal condition; the crystal structure of clinoptilolite modified with different methods is not destroyed and almost the same as the natural clinoptilolite.

关 键 词：斜发沸石 改性 微波 超声波 交换容量 

分 类 号：TB321[一般工业技术—材料科学与工程]