Abstract
Sn-MFI molecular sieves (Tin silicalite-1) with SiO2/SnO2 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.
Similar content being viewed by others
References
Narayanan S, Durgakumari V, Rao AS (1994) Appl Catal A 111:133
Santhanalakshmi J, Raja T (1996) Appl Catal A 147:69
Sunwanprasop S, Nhujak T, Roengsumran S, Petsom A (2004) Ind Eng Chem Res 43:4973
Stauffer SR, Hartwig JF (2003) J Am Chem Soc 125:6977
Kim JS, Shon OJ, Rim JA, Kim SK, Yoon J (2002) J Org Chem 67:2348
Narayanan S, Deshpande K (2000) Appl Catal 199:1
Baustista FM, Campelo JM, Luna GD, Marinas JM, Romero AA, Urbano MR (1997) J Catal 172:103
Baustista FM, Campelo JM, Luna GD, Marinas JM, Romero AA (1998) Appl Catal A 166:39
Garces LJ, Makwana VD, Hincapie B, Sacco A, Suib SL (2003) J Catal 217:107
Ivanova II, Pomakhina EB, Rebrov AI, Hunger M, Kolyagin YG, Weitkamp J (2001) J Catal 203:375
Selva M, Tundo P, Foccardi T (2005) J Org Chem 70:2476
Ko A, Yang C, Zhu W, Lin H (1996) Appl Catal A 134:53
Vijayaraj M, Gopinath CS (2006) J Catal 241:83
Sreekumara K, Rajab T, Kiranb BP, Sugunana S, Rao BS (1999) Appl Catal A 182:327
Park YK, Park K, Woo S (1994) Catal Lett 26:169
Yang C, He N, Xu Q (1999) J Incl Phen Macro 35:123
Su BL, Barthomeuf D (1995) Appl Catal A 124:73
Elangovan SP, Kannan C, Arabindoo B, Murugesan V (1998) Appl Catal A 174:213
Yadav GD, Doshi NS (2003) J Mol Catal A 194:195
Narayanan S, Deshpande K (1995) J Mol Catal A 104:L109
Narayanan S, Prasad BP (1995) J Mol Catal A 96:57
Luque R, Campelo JM, Luna D, Marinas JM, Romero AA (2007) J Mol Catal A 269:190
Woo SI, Lee JK, Hong BS, Park YK, Uh YS (1989) Stud Surf Sci Catal 49B:1095
Chen PY, Chen MC, Chu HY, Chang NS, Chuang TK (1986) Stud Surf Sci Catal 28:739
Campelo JM, Lafont F, Marinas JM (1995) Zeolites 15:97
Karge HG, Dondur V (1990) J Phys Chem 94:765
Karge HG, Dondur V, Weitkamp J (1991) J Phys Chem 95:283
Jing H, Edulji SK, Gibbs JM, Stern CL, Zhou H, Nguyen ST (2004) Inorg Chem 43:4315
Bryce MR (1991) Chem Soc Rev 20:355
Panchgalle SP, Kalkote UR, Niphadkar PS, Joshi PN, Chavan SP, Chaphekar GM (2004) Green Chem 6:308
Corma A, Nemeth L, Renz M, Valencia S (2001) Nature 412:423
Mal KN, Bhaumik A, Kumar R, Ramaswamy AV (1995) Catal Lett 33:387
Gaydhankar TR, Joshi PN, Kalita P, Kumar R (2007) J Mol Catal A: Chem 265:306
Mal NK, Arumugamangalam V, Ramaswamy AV (1996) J Mol Catal A: Chem 105:149
Mal NK, Arumugamangalam V, Ramaswamy AV (1996) Appl Catal A: Gen 143:75
Samanta S, Mal NK, Manna A, Bhaumik A (2004) Appl Catal A: Gen 273:157
Boronat M, Corma A, Renz M (2006) J Phys Chem B 110:21168
Corma A, Domine ME, Valencia S (2003) J Catal 215:294
Niphadkar PS, Kotwal MS, Deshpande SS, Bokade VV, Joshi PN (2009) Mater Chem Phys 114:344
Bibby LM, Aldridge LP, Milestone NB (1981) J Catal 72:373
Chaudhari K, Das TK, Rajmohanan PR, Lazar K, Sivasanker S, Chandwadkar AJ (1999) J Catal 183:281
Wang X, Xu H, Fu X, Liu P, Lefebvre F, Basset JM (2005) J Mol Catal A: Chem 238:185
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Niphadkar, P.S., Joshi, P.N., Gurav, H.R. et al. Synthesis of N-methylaniline by Aniline Alkylation with Methanol over Sn-MFI Molecular Sieve. Catal Lett 133, 175–184 (2009). https://doi.org/10.1007/s10562-009-0143-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10562-009-0143-4