Pure silica NU-1 and Na- and Al-free Ti-NU-1 synthesized by the dry gel conversion method
作者： A. Bhaumik , T. Tatsumi
DOI: 10.1016/S1387-1811(99)00144-4
关键词:
摘要: Abstract Pure silica NU-1 and its titanium silicate analog Ti-NU-1, free from Na Al, have been synthesized for the first time using dry gel conversion technique, which was not previously possible under conventional hydrothermal synthesis procedure. These materials were characterized by XRD, FT IR, UV-vis, TG/DTA, SEM N 2 adsorption measurements. The presence of a strong framework IR band at ∼960 cm −1 an UV-vis diffuse reflectance 220–240 nm in Ti-NU-1 is indication highly dispersed tetrahedral species matrix.
elsevier.com
sci-hub.se 参考文章(11)
M.A. Camblor, A. Corma, A. Martínez, J. Pérez-Pariente, J. Primo, Selective Oxidation of Organic Compounds Over the Large Pore Beta-Ti Zeolite Studies in Surface Science and Catalysis. ,vol. 78, pp. 393- 399 ,(1993) , 10.1016/S0167-2991(08)63345-5
A. Zecchina, G. Spoto, S. Bordiga, M. Padovan, G. Leofanti, G. Petrini, IR Spectra of CO Adsorbed at Low Temperature (77 K) On Titaniumsilicalite, H-ZSM5 and Silicalite Studies in Surface Science and Catalysis. ,vol. 65, pp. 671- 680 ,(1991) , 10.1016/S0167-2991(08)62951-1
Rosemarie Szostak, Molecular Sieves: Principles of Synthesis and Identification ,(1997)
M.A. Camblor, A. Corma, J. Pérez-Pariente, Synthesis of titanoaluminosilicates isomorphous to zeolite Beta, active as oxidation catalysts Zeolites. ,vol. 13, pp. 82- 87 ,(1993) , 10.1016/0144-2449(93)90064-A
Rajiv Kumar, Asim Bhaumik, Ranjeet Kaur Ahedi, Subramanian Ganapathy, Promoter-induced enhancement of the crystallization rate of zeolites and related molecular sieves Nature. ,vol. 381, pp. 298- 300 ,(1996) , 10.1038/381298A0
D. M. Bibby, M. P. Dale, Synthesis of silica-sodalite from non-aqueous systems Nature. ,vol. 317, pp. 157- 158 ,(1985) , 10.1038/317157A0
A. Tuel, Synthesis, characterization, and catalytic properties of the new TiZSM-12 zeolite Zeolites. ,vol. 15, pp. 236- 242 ,(1995) , 10.1016/0144-2449(94)00059-2
R.K. Ahedi, S.S. Shevade, A.N. Kotasthane, Titanosilicate derivative of the NU-1 framework zeolites (TS-NU-1) Zeolites. ,vol. 18, pp. 361- 367 ,(1997) , 10.1016/S0144-2449(97)00033-X
Takashi Tatsumi, Qinghua Xia, Nizamidin Jappar, Synthesis of Ti-beta Zeolite with High Oxidation Activity by a Dry-gel Conversion Technique Chemistry Letters. ,vol. 1997, pp. 677- 678 ,(1997) , 10.1246/CL.1997.677
P. R. Hari Prasad Rao, M. Matsukata, Dry-gel conversion technique for synthesis of zeolite BEA Chemical Communications. pp. 1441- 1442 ,(1996) , 10.1039/CC9960001441