首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
地质聚合物原位合成八面沸石膜及其渗透汽化性能
作者:冒进 王艺频 刘菁 贺艳 刘兴东 崔学民 
单位:广西石化资源加工与过程强化技术重点实验室 广西大学化学化工学院 南宁 530004 
关键词:地质聚合物 八面沸石分子筛膜 水热合成 渗透汽化 
分类号:
出版年,卷(期):页码:2013,41(9):1244-1250
DOI:
摘要:
以煅烧高岭土和水玻璃为原料制备地质聚合物,采用水热合成法原位合成了自支撑八面沸石(简称FAU型)膜。利用X射线衍射、扫描电子显微镜、万能压力试验机表征了沸石膜材料的抗压强度和微观结构,通过渗透汽化实验及数学模型考察了乙醇/水混合物体系进料组成和温度对沸石膜的渗透通量以及分离因数的影响。结果表明:该沸石膜表面的晶粒细小,膜覆盖完全且连续致密;提高养护时间有利于提高地质聚合物的压缩强度,提高水热时间有利于改善FAU型沸石膜表面形貌和相组成。在进料温度为50 ℃、原料中乙醇的含量为70%的优化条件下,FAU型沸石膜具有较高的渗透通量和分离因数,其渗透通量和分离因数分别达到1.41 kg/(h?m2)和16.8。
how to cheat read wife cheat story
redirect go why women cheat on men they love
amoxicillin amoxicillin amoxicillin
Self-supporting faujasite zeolite (FAU) membranes were synthesized by an in-situ hydrothermal growth method from geopolymers, which were prepared with metakaolin and sodium silicate as raw materials. The crystal properties, microstructure and compressive strength of the membranes were analyzed by X-ray diffraction、scanning electron microscopy and universal pressure tester, respectively. The effects of feed composition and temperature on the permeation flux and separation factor of the FAU zeolite membrane were investigated via pervaporation (PV) experiment and mathematical model. The results show that the size of zeolite granular is small, and the membrane surface appears complete and continuous. The increase of the curing time can improve the compressive strength of geopolymers, and the increase of the hydrothermal time can enhance the phase composition of FAU zeolites. For the ethanol content of 70% at 50 ℃, the permeation flux and separation factor of the FAU type zeolite membrane are 1.41 kg/(h?m2) and 16.8, respectively.
how to cheat signs of a cheater wife cheat story
read percentage of women who cheat signs of infidelity
my husband cheated on me men who have affairs women who cheat on husband
open open My husband cheated on me
基金项目:
国家自然科学基金(51262002和50962002);广西自然科学基金重点项目(2012GXNSFDA053003)资助。
作者简介:
参考文献:
[1] DAVIDOVITS J. Goepolymers: inorganic polymeric new materials [J]. J Therml Anal, 1991, 37: 1633–1656. [2] DAVIDOVITS J. Man-made rock deosynthesis and the resulting development of very early high strength cement [J]. J Mater Educ, 1994, 16(2/3): 91–139 [3] 王 进, 韩朝江, 王军霞, 等. “碱–矿渣–粉煤灰–偏高岭土”水合陶瓷产物组成和微观结构[J]. 硅酸盐学报, 2011, 39(3): 512–517. WANG Jin, HAN Chaojiang, WANG Junxia, et al. J Chin Ceram Soc, 2011, 39(3): 512–517. [4] 崔学民, 邱树恒, 曹德光, 等. 水对碱矿渣胶凝材料介电性能的影响[J]. 硅酸盐学报, 2007, 35(6): 791–795. CUI Xuemin, QIU Shuheng, CAO Deguang, et al. J Chin Ceram Soc, 2007, 35(6): 791–795. [5] 蒋荣立, 孔德顺, 夏小波, 等. 偏高岭石–碱–硅酸钠水热反应体系13X分子筛的合成[J]. 硅酸盐学报, 2008, 36(6): 832–837. JIANG Rongli, KONG Deshun, XIA Xiaobo, et al. J Chin Ceram Soc, 2008, 36(6): 832–837. [6] WANG Y, TANG Y, DONG A, et al. Self-supporting porous zeolite membrane with sponge-like architecture and zeolitic microtubes [J]. Adv Mater, 2002, 14: 994–997. [7] KITA H, INOUE T, ASAMURA H, et al. NaY zeolite membrane for the pervaporation separation of methanol–methyltert-butyl ether mixtures [J]. Chem Commun, 1997(1): 45–46. [8] JEONG B H , HASEGAWA Y, SOTOWA K I, et al. Vapor permeation properties of an NaY-type zeolite membrane for normal and branched hexanes [J]. Ind Eng Chem Res, 2002, 41: 1768–1773. [9] 徐南平, 邢卫红, 赵宜江. 无机膜分离技术与应用[M]. 北京: 化学工出版社, 2003: 325–361. [10] 徐如人, 庞文琴, 于吉红, 等. 分子筛与多孔材料化学[M]. 北京: 科学出版社, 2004: 286–294. [11] OGURA M, KAWAZU Y. Aluminosilicate species in the hydrogel phase formed during the aging process for the crystallization of FAU zeolite [J]. Chem Mater, 2003, 15: 2611–2667. [12] 徐如人, 李守贵. 沸石分子筛的生成机理与晶体生长(V)-L型沸石晶体生长动力学[J]. 高等学校化学学报, 1983, 4(l): l–6. XU Ruren, LI Shougui. Chem J Chin Univ(in Chinese), 1983, 4(l): l–6. [13] HE Y, CUI X M, MAO J, et al. The hydrothermal transformation of solid geopolymers into zeolites [J]. Microporous Mesoporous Mater, 2012, 161: 187–192. [14] ZHU G, LI Y, ZHOU H, et al. Microwave synthesis of high performance FAU-type zeolite membranes: Optimization, characterization and pervaporation dehydration of alcohols [J]. J Membr Sci, 2009, 337: 47–54. [15] ZHU G, LI Y, ZHOU H, et al. FAU-type zeolite membranes synthesized by microwave assisted in situ crystallization [J]. Mater Lett, 2008, 62: 4357–4359. [16] 吴杰, 秦永宁, 马智. 由煤系高岭土合成小晶粒NaY分子筛及其应用[J]. 化学工业与工程, 2006, 23(1): 18–20. WU Jie, QIN Yongning, MA Zhi. Chem Ind Eng (in Chinese), 2006, 23(1): 18–20. [17] PERA-TITUS M, MALLADA R, LLORENS J, et al., Preparation of inner-side tubular zeolite NaA membranes in a semi-continuous synthesis system [J]. J Membr Sci, 2006, 278: 401–409. [18] CHO C H, OH K Y, KIM S K, et al. Pervaporative seawater desalination using NaA zeolite membrane: Mechanism of high water flux and high salt rejectin [J]. J Membr Sci, 2011, 371: 226–238. [19] OKAMOTO K, KITA H, HORII K, et al. Zeolite NaA membrane: preparation, single-gas permeation, and pervaporation and vapor permeation of water/organic liquid mixtures [J]. Ind Eng Chem Res, 2001, 40: 163–175. [20] CUI X M, HE Y, LIU L P, et al. NaA zeolite synthesis from geopolymer precursor [J]. MRS Commun, 2011, 1: 49–51. [21] NIKOLAKIS V, XOMERITAKIS G, ABIBI A, et al. Growth of a faujasite-type zeolite membrane and its application in the separation of saturated/unsaturated hydrocarbon mixtures [J]. J Membr Sci, 2001, 184: 209–219.
why women cheat on husbands link link
how do i know if my wife has cheated men having affairs read
open cheat women go
redirect go why women cheat on men they love
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com