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Para-selective butylation of phenol over silicoaluminophosphate molecular sieve SAPO-11 catalyst

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Title Para-selective butylation of phenol over silicoaluminophosphate molecular sieve SAPO-11 catalyst
 
Creator SUBRAMANIAN, S
MITRA, A
SATYANARAYANA, CVV
CHAKRABARTY, DK
 
Subject crystalline inorganic solids
alkylation
methanol
zeolite
toluene
al
si
silicoaluminophosphate
sapo-11
butylation of phenol
para-selectivity
 
Description Alkylation of phenol with t-butanol in the vapour phase on SAPO-11 catalyst has been studied. The main products are 4-t-butylphenol, 2-t-butylphenol and 2,4-di-t-butylphenol, the last of these is the product of further alkylation of the 2-t-butylphenol. 2-t-butylphenol easily isomerises to 4-t-butylphenol whereas the reverse reaction is not significant. Separate Studies have shown that both butylphenols undergo easy dealkylation. The results of acid site poisoning by adsorption of bases as well as by sililation suggest that the reaction takes place essentially inside the zeolite pores.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T01:42:18Z
2011-12-26T12:52:27Z
2011-12-27T05:38:02Z
2011-07-26T01:42:18Z
2011-12-26T12:52:27Z
2011-12-27T05:38:02Z
1997
 
Type Article
 
Identifier APPLIED CATALYSIS A-GENERAL, 159(1-2), 229-240
0926-860X
http://dx.doi.org/10.1016/S0926-860X(97)00030-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6849
http://hdl.handle.net/10054/6849
 
Language en