The synthesis of mesoporous aluminosilicate using microcline for adsorption of mercury(II)

被引:56
作者
Wu, Xiu-Wen [1 ]
Ma, Hong-Wen
Li, Jin-Hong
Zhang, Jun
Li, Zhi-Hong
机构
[1] China Univ Geosci, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
[2] China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100049, Peoples R China
关键词
mesoporous; microcline; mercury(II) adsorption; adsorption mechanism; aluminosilicate;
D O I
10.1016/j.jcis.2007.06.074
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An economical mesoporous alummosilicate was synthesized with microcline as starting material and the precursor 13X zeolite as seed for crystal structure on mesoporous walls. In this method, a mixture of microcline and Na2CO3 with a molar ratio of 1:1.05 was first calcined at 1093 K for 2.5 h. The calcined materials were mixed with 35 ml C(16)TMABr aqueous solution (containing 8.2g C(16)TMABr) and the precursors of 13X zeolite, resulting in mesoporous aluminosilicate after crystallization of the solution at 378 K for 48 h and calcination of the powder at 823 K for 5 h. The as-synthesized sample has a uniform pore diameter distribution centered at 3.7 nm. The as-synthesized sample had BET surface area of 725 m(2)/g and BJH mean pore diameter of 3.7 run. The FT-IR results revealed that the building units of 13X zeolite were inserted into the pore walls of the as-synthesized sample. The adsorption ratio of mercury(II) onto the as-synthesized adsorbent was about 95%. The adsorption process was found to be spontaneous and can be explained by particle diffusion and chemical ion-exchange mechanisms. The equilibrium concentration of mercury(II) using the as-synthesized sample as the adsorbent was under 1 mu g/L, making the concentration of mercury meet the limit for drinking water in China as recommended by the World Health Organization. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码:555 / 561
页数:7
相关论文
共 43 条
[1]   A review of potentially low-cost sorbents for heavy metals [J].
Bailey, SE ;
Olin, TJ ;
Bricka, RM ;
Adrian, DD .
WATER RESEARCH, 1999, 33 (11) :2469-2479
[2]   A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].
BECK, JS ;
VARTULI, JC ;
ROTH, WJ ;
LEONOWICZ, ME ;
KRESGE, CT ;
SCHMITT, KD ;
CHU, CTW ;
OLSON, DH ;
SHEPPARD, EW ;
MCCULLEN, SB ;
HIGGINS, JB ;
SCHLENKER, JL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843
[3]   Comparative study of Al-MCM materials prepared at room temperature with different aluminium sources and by some hydrothermal methods [J].
Carrott, M. M. L. Ribeiro ;
Conceicao, F. L. ;
Lopes, J. M. ;
Carrott, P. J. M. ;
Bernardes, C. ;
Rocha, J. ;
Ribeiro, F. Rama .
MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 92 (1-3) :270-285
[4]  
Chan WC, 1998, J APPL POLYM SCI, V67, P1085, DOI 10.1002/(SICI)1097-4628(19980207)67:6<1085::AID-APP16>3.3.CO
[5]  
2-7
[6]   Toward the aluminum coordination in dealuminated mordenite and amorphous silica-alumina:: A high resolution 27Al MAS and MQ MAS NMR study [J].
Chen, TH ;
Houthoofd, K ;
Grobet, PJ .
MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 86 (1-3) :31-37
[7]   Synthesis, characterization, and catalytic properties of stable mesoporous alumino silicates assembled from preformed zeolite L precursors [J].
Di, Y ;
Yu, Y ;
Sun, YY ;
Yang, XY ;
Lin, S ;
Zhang, MY ;
Li, SG ;
Xiao, FS .
MICROPOROUS AND MESOPOROUS MATERIALS, 2003, 62 (03) :221-228
[8]   Removal of some divalent cations from water by membrane-filtration assisted with alginate [J].
Fatin-Rouge, N ;
Dupont, A ;
Vidonne, A ;
Dejeu, J ;
Fievet, P ;
Foissy, A .
WATER RESEARCH, 2006, 40 (06) :1303-1309
[9]   Synthesis and characterization of composite molecular sieves comprising zeolite Beta with MCM-41 structures [J].
Guo, WP ;
Xiong, CR ;
Huang, LM ;
Li, QZ .
JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (07) :1886-1890
[10]   A novel method for incorporation of heteroatoms into the framework of ordered mesoporous silica materials synthesized in strong acidic media [J].
Han, Y ;
Xiao, FS ;
Wu, S ;
Sun, YY ;
Meng, XJ ;
Li, DS ;
Lin, S ;
Deng, F ;
Ai, XJ .
JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (33) :7963-7966