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1129746 
Journal Article 
Synthesis of N-methylaniline by Aniline Alkylation with Methanol over Sn-MFI Molecular Sieve 
Niphadkar, PS; Joshi, PN; Gurav, HR; Deshpande, SS; Bokade, VV 
2009 
Yes 
Catalysis Letters
ISSN: 1011-372X
EISSN: 1572-879X 
133 
1-2 
175-184 
English 
WOS:000271443200024 
Sn-MFI molecular sieves (Tin silicalite-1) with SiO2/SnO 2 molar ratio of 50-150 were synthesized and characterized. Elemental analysis, XRD and DRUV-vis confirmed that prepared samples were of MFI zeolite structure and Sn was incorporated in MFI framework. Vapor phase methylation of aniline over Sn-MFI was systematically studied and optimizations of process parameters were carried out. Sn-MFI (SiO2/SnO2 = 50) was found to be optimum catalyst with 55% aniline conversion and 60% N-methylaniline selectivity. At lower space velocity (higher contact time) of 1 h-1, aniline conversion was found to be increased to 71% with reduction in N-methylaniline selectivity to 39% and increased in N,N-dimethylaniline selectivity to 58%. The reaction follows first order kinetics with respect to aniline having activation energy of 7.3 kcal/mol. © 2009 Springer Science+Business Media, LLC. 
Sn-MFI; Lewis acid; Aniline; Methanol; N-methylaniline 
IRIS
• Methanol (Non-Cancer)
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