The direct conversion of impure natural kaolin into pure zeolite catalysts

被引:57
作者
Holmes, Stuart M. [1 ]
Khoo, Siau Huey [1 ]
Kovo, Abdul S. [1 ]
机构
[1] Univ Manchester, Sch Chem Engn & Analyt Sci, Manchester M13 9LP, Lancs, England
关键词
ACID; BETA;
D O I
10.1039/c1gc15099e
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The use of kaolin as a silica source in the synthesis of zeolites has been achieved using a novel synthetic approach. The technique reported allows the use of impure kaolin as a starting material to produce pure ZSM-5 zeolite. This is important as it is extremely difficult and time consuming to remove all impurities from natural kaolin. This is also the first report of the direct synthesis of a high silica zeolite from kaolin without the use of an external silica source.
引用
收藏
页码:1152 / 1154
页数:3
相关论文
共 23 条
[1]  
Basaldella E.I., 1990, REACT SOLID, V8, P169
[2]   Chemical activation of a kaolinite under acid and alkaline conditions [J].
Belver, C ;
Muñoz, MAB ;
Vicente, MA .
CHEMISTRY OF MATERIALS, 2002, 14 (05) :2033-2043
[3]   SYNTHESIS OF FAUJASITE TYPE ZEOLITES FROM CALCINED KAOLINS [J].
BOSCH, P ;
ORTIZ, L ;
SCHIFTER, I .
INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1983, 22 (03) :401-406
[4]   Synthesis of X-type zeolite from dealuminated kaolin by reaction with sulfuric acid at high temperature [J].
Caballero, Ivan ;
Colina, Fernando G. ;
Costa, Jose .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (04) :1029-1038
[5]   Influence of metakaolinization temperature on the formation of zeolite 4A from kaolin [J].
Chandrasekhar, S .
CLAY MINERALS, 1996, 31 (02) :253-261
[6]   Investigation on the synthesis of zeolite NaX from kerala kaolin [J].
Chandrasekhar, S ;
Pramada, PN .
JOURNAL OF POROUS MATERIALS, 1999, 6 (04) :283-297
[7]   Microwave assisted synthesis of zeolite A from metakaolin [J].
Chandrasekhar, Sathy ;
Pramada, P. N. .
MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 108 (1-3) :152-161
[8]   Study of the dissolution of dealuminated kaolin in sodium-potassium hydroxide during the gel formation step in zeolite X synthesis [J].
Colina, Fernando G. ;
Llorens, Joan .
MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 100 (1-3) :302-311
[9]   Cr(III) exchange on zeolites obtained from kaolin and natural mordenite [J].
Covarrubias, C ;
García, R ;
Arriagada, R ;
Yánez, J ;
Garland, MT .
MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 88 (1-3) :220-231
[10]   STRUCTURAL-CHANGES IN KAOLINITE CAUSED BY RAPID DEHYDROXYLATION [J].
DAVIES, TW ;
HOOPER, RM .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1985, 4 (01) :39-42