Membrane Science and Technology

Position：Home >> Abstract

Microwave Synthesis of NaA zeolite membrane of kaolin and its performance and characterization

Authors：
HU Qiuwei，ZHOU Zhihui，XIANG Xiaodong

Units： Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan 430081, China

KeyWords： Kaolin; NaA zeolite membrane; Microwave synthesis

ClassificationCode：TD985

year,volume(issue):pagination： 2012, 32(4):66-69

Abstract：

his paper focuses on the microwave synthesis of NaA zeolite membrane of kaolin and its performance. The effect of the aluminum source, crystallization time and other aspects on the microwave synthesis of NaA zeolite membrane of kaolin was studied, and the performance of hydrothermal synthesis of NaA membrane and the microwave synthesis of NaA membrane was compared. Experimental results showed that the kaolin as raw materials of the NaA membrane compounds by microwave synthesis, the separation factor of pervaporation dehydration of ethanol is more than 10,000; Crystallization time of kaolin as raw materials in the microwave synthesis of NaA membrane was 15 min, 20 min and 25 min, respectively; the pervaporation flux from the 2.44 kg•m-2•h-1 decreased to 0.92 kg•m-2•h-1, and the separation factor increased from 2945 to 11846. When the crystallization time was 20 min, the separation factor and permeation flux were 10359 and 1.13 kg•m-2•h-1, respectively;
At the same time，under the same formulation conditions, the reaction time for hydrothermal synthesis of NaA membrane and microwave synthesis of NaA membrane reduced from 20 min to 4h, and the separation factor increased from 5231 to 10360.

Funds：

AuthorIntro：

胡秋玮(1985- )，女，湖北武汉，武汉科技大学研究生，主要学习方向为无机膜制备和烟气脱硫脱硝的研究。通讯作者：周志辉(1980- )，男，湖北武汉，武汉科技大学副教授，主要研究方向为无机膜的制备及应用。通讯地址：武汉市青山区和平大道947号武汉科技大学校本部284信箱 430081 联系电话：13871294049

Reference：

[1] 陈晶，孙德坤，董少春．微波法煅烧高岭土及合成洗涤助剂4A沸石[J].无机化学学报，2000，16(5)：769～774.
[2] Honghai L, Jiantai M, Xionghou G. et al, Characterization and evaluation of novel resid FCC cata1yst based on in-situ synthesis on kaolin microspheres[J]. Catalysis Letters, 2006. 1 10:229～234.
[3] 中国科学院大连化学物理研究所分子筛组．沸石分子筛[M]．北京：科学出版社.1978：32～35.
[4] Mintova S, Olson N H, Vahchev V, Mechanism of zeolite A nanocrystal growth from colloids at room temperature[J], Science, 1999.283:958～960.
[5] Slangen P M, Jansen J C, Bekkum H V, The effect of ageing on the microwave synthesis of zeolite NaA[J]. Mieroporous Materials, 1997,9:259～265.
[6] Miao Q, Zhou g, Yang J, et a1. Synthesis of NaA zeolite from kaolin source[J], Front Chem Eng China, 2009(3):8～11.
[7] Sathy C, Pramada P N. Kaolin-based zeolite Y, a precursor for cordierite ceramics[J]. Applied Clay Science, 2004, 27:187～198.
[8] Marce I, Mignoni L, Diego I P，et al，Synthesis of mordenite using kaolin as Si and A1 source[J]. Applied Clay Science, 2008, 41:99～104.
[9] 苗倩．高岭土原料NaA分子筛及膜的制备与应用[D].硕士学位论文，大连理工大学，2009.
[10] 李邦民，吕丹，王金渠，鲍仲英，殷德宏.在α—Al2O3陶瓷管内表面动态合成NaA分子筛膜.[J]. 膜科学与技术，2005，25(6):21～23.
[11] 戴长禄，钟洪祥，潘节文，等.高岭土[M] .北京：中国建筑工业出版社，1983.
[12] 张小明，吕高孟，雷骞，索继栓. 流动体系中NaA 分子筛膜的制备及渗透汽化分离性能研究.[J]. 膜科学与技术，2010，30(1):51～53.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com