A series of fluorinated nanosized HZSM-5 catalysts were prepared by impregnating the zeolite with NH4F solution. The samples were characterized by XRD, XRF, FTIR-Py, TPD, 27Al and 29Si MAS-NMR. The effect of calcination temperature on the structure and acidity was studied in the range of 400–500 °C. When the calcination temperature increases, more framework aluminum atoms are removed due to the fluorination. As a result, the number of acid sites and the acid strength decrease, but the ratio of the total Brönsted acid sites to the total Lewis acid sites (BT/LT) increases. The fluorinated nanosized HZSM-5 catalysts exhibit better stability in the methylation of biphenyl (BP) with methanol. Moreover, the stability increases with the increase of the calcination temperature. When the fluorinated nanosized HZSM-5 is calcined at 500 °C, the conversion of BP can keep at about 10% for 50 h. The enhancement of stability may be due to the decrease of the acid strength and the increase of the ratio of BT/LT.
Similar content being viewed by others
References
C. Song, J.M. Graces and Y. Sugi, Shape-selective Catalysis. Chemicals Synthesis and Hydrocarbon Processing, ACS Symp. Ser., Vol. 738(Am. Chem. Soc., Washington, 1999, DC) pp. 248
C. Song S. Kirby (1994) Micropor. Mater. 2 467 Occurrence Handle1:CAS:528:DyaK2cXntVSmtb4%3D
A.D. Schmitz C. Song (1996) Catal. Today 31 19 Occurrence Handle1:CAS:528:DyaK28Xltleit7g%3D
Y. Sugi M. Toba (1994) Catal. Today 19 187 Occurrence Handle10.1016/0920-5861(94)85007-0 Occurrence Handle1:CAS:528:DyaK2cXislensbY%3D
G.S. Lee J.M. Garces J. Maj (1990) J. Catal. Sci. Technol. 1 385
S. Tawada Y. Sugi Y. Kubota (2000) Catal. Today 60 243 Occurrence Handle10.1016/S0920-5861(00)00341-2 Occurrence Handle1:CAS:528:DC%2BD3cXlsFGrsLs%3D
J.P. Shen L. Sun C. Song (2000) Catal. Lett. 65 147 Occurrence Handle10.1023/A:1019052802061 Occurrence Handle1:CAS:528:DC%2BD3cXisFWgsbc%3D
J.P. Shen L. Sun C. Song (2001) Stud. Surf. Sci. Catal. 135 157
X.W. Guo J.P. Shen L. Sun C. Song X.S. Wang (2003) Catal. Lett. 87 25 Occurrence Handle1:CAS:528:DC%2BD3sXitFSjsLY%3D
S. Dubuis R. Doepper A. Renken (1999) Stud. Surf. Sci. Catal. 122 359 Occurrence Handle1:CAS:528:DyaK1MXjsFaktLk%3D
X.W. Guo J.P. Shen L. Sun C. Song X.S. Wang (2003) Catal. Lett. 87 159 Occurrence Handle1:CAS:528:DC%2BD3sXjtFeltbc%3D
N.A. Sánchez J.M. Saniger J.B. Caillerie A.L. Blumenfeld J.J. Fripiat (2001) J. Catal. 201 80
R. LeVan Mao T.S. Le M. Fairbairn A. Muntasar S. Xiao G. Denes (1999) Appl. Catal. A: Gen 185 41
S. Kowalak E. Szymkowiak M. Laniecki (1999) J. Fluorine Chem. 93 175 Occurrence Handle1:CAS:528:DyaK1MXht1SnsQ%3D%3D
R.B. Borade A. Clearfield (1995) J. Chem. Soc. Faraday Trans. 91 539 Occurrence Handle10.1039/ft9959100539 Occurrence Handle1:CAS:528:DyaK2MXjsVyhtLw%3D
F. Kollmer H. Hausmann W.F. Hölderich (2004) J. Catal. 227 408 Occurrence Handle1:CAS:528:DC%2BD2cXotFGntLw%3D
F. Kollmer H. Hausmann W.F. Hölderich (2004) J. Catal. 227 398 Occurrence Handle1:CAS:528:DC%2BD2cXotFGntL8%3D
M. Sugimoto H. Katsuno K. Takatsu N. Kawata (1987) Zeolites 7 503 Occurrence Handle10.1016/0144-2449(87)90087-X Occurrence Handle1:CAS:528:DyaL1cXkslaqtrg%3D
M. Yamamura K. Chaki T. Wakatsuki K. Fujimoto (1994) Zeolites 14 643 Occurrence Handle10.1016/0144-2449(94)90121-X Occurrence Handle1:CAS:528:DyaK2cXntVemsrs%3D
X. Wang X. Wang X. Guo (2000) CN 1 240 193
H. Kee V. Rhee Udaya S. Rao M. John Stencel (1983) Zeolites 3 337
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, Y., Guo, X., Zhang, C. et al. Influence of Calcination Temperature on the Stability of Fluorinated Nanosized HZSM-5 in the Methylation of Biphenyl. Catal Lett 107, 209–214 (2006). https://doi.org/10.1007/s10562-006-0004-3
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s10562-006-0004-3