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Silicoaluminophosphate molecular sieves SAPO-11, SAPO-31 and SAPO-41: Synthesis, characterization and alkylation of toluene with methanol

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Title Silicoaluminophosphate molecular sieves SAPO-11, SAPO-31 and SAPO-41: Synthesis, characterization and alkylation of toluene with methanol
 
Creator PRAKASH, AM
CHILUKURI, SVV
BAGWE, RP
ASHTEKAR, S
CHAKRABARTY, DK
 
Subject solid-state nmr
zeolite catalysts
thermal-stability
selectivity
acidity
xylene
si
al
molecular sieves
medium pore silicoaluminophosphates
silicoaluminophosphates
mas nmr spectroscopy
alkylation
toluene
 
Description Medium pore molecular sieves SAPO-11, SAPO-31 and SAPO-41 have been synthesized using di-n-propylamine as the organic template. They have been characterized by various methods such as X-ray powder diffraction, solid state MAS NMR spectroscopy, thermal analysis, chemical analysis and temperature programmed desorption (TPD) of ammonia. Catalytic activities of these materials in the alkylation of toluene with methanol have been studied. While SAPO-11 and SAPO-31 showed moderate activity, very high catalytic activity was shown by SAPO-41. All the catalysts showed varying degrees of shape selectivity towards p-xylene. SAPO-41 gave a large amount of 1,2,4-trimethylbenzene in addition to the xylenes.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T16:59:55Z
2011-12-26T12:55:17Z
2011-12-27T05:44:02Z
2011-07-26T16:59:55Z
2011-12-26T12:55:17Z
2011-12-27T05:44:02Z
1996
 
Type Article
 
Identifier MICROPOROUS MATERIALS, 6(2), 89-97
0927-6513
http://dx.doi.org/10.1016/0927-6513(95)00091-7
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6969
http://hdl.handle.net/10054/6969
 
Language en