Microporous characteristics of HY, H-ZSM-5 and H-mordenite dealuminated by calcination
作者： Y. Hong , J.J. Fripiat
DOI: 10.1016/0927-6513(95)00038-B
关键词:
摘要: Abstract The modifications of the microporous volume zeolites resulting from thermal dealumination have been examined by measuring changes in unit cell parameters as well N2 and n-pentane adsorption isotherms. For cubic HY orthorhombic H-ZSM-5 zeolites, differential decrease per non-framework aluminum (NFAl) can be predicted assuming NFAl is concentrated pores available to N2. H-mordenite, homogeneously spread all pores, or not Gurvitch rule (volume adsorbed = pentane) respected H-ZSM-5, but irrespective degree dealumination.
elsevier.com
sci-hub.se 参考文章(18)
Ch Baerlocher, David Olson, Walter Meier, Atlas of Zeolite Structure Types ,(1988)
Donald W Breck, Zeolite Molecular Sieves: Structure, Chemistry, and Use ,(1974)
M.R Bhambhani, P.A Cutting, K.S.W Sing, D.H Turk, Analysis of nitrogen adsorption isotherms on porous and nonporous silicas by the BET and αs methods joint international conference on information sciences. ,vol. 38, pp. 109- 117 ,(1972) , 10.1016/0021-9797(72)90226-3
Ludmila Kubelková, Stanislav Beran, Anna Malecka, Vyatcheslav M. Mastikhin, Acidity of modified Y zeolites: Effect of nonskeletal Al, formed by hydrothermal treatment, dealumination with SiCl4, and cationic exchange with Al Zeolites. ,vol. 9, pp. 12- 17 ,(1989) , 10.1016/0144-2449(89)90003-1
Sidney John Gregg, Adsorption, Surface Area and Porosity ,(1967)
C. Fernandez, J.C. Vedrine, J. Grosmangin, G. Szabo, Dealumination of an offretite-type zeolite: framework modifications Zeolites. ,vol. 6, pp. 484- 490 ,(1986) , 10.1016/0144-2449(86)90033-3
Y. Hong, V. Gruver, J.J. Fripiat, Role of Lewis Acidity in the Isomerization of n-Pentane and o-Xylene on Dealuminated H-Mordenites Journal of Catalysis. ,vol. 150, pp. 421- 429 ,(1994) , 10.1006/JCAT.1994.1360
V.R. Chumbhale, A.J. Chandwadkar, B.S. Rao, Characterization of siliceous mordenite obtained by direct synthesis or by dealumination Zeolites. ,vol. 12, pp. 63- 69 ,(1992) , 10.1016/0144-2449(92)90012-E
M. Brotas de Carvalho, A.P. Carvalho, F. Ramôa Ribeiro, A. Florentino, N.S. Gnep, M. Guisnet, Dealumination of zeolites: Part V. Influence of the hydrothermal treatment of offretite on its pore structure and acid properties Zeolites. ,vol. 14, pp. 217- 224 ,(1994) , 10.1016/0144-2449(94)90158-9
J. Pires, M. Brotas de Carvalho, F.R. Ribeiro, E.G. Derouane, Textural characteristics of Y and ZSM-20 zeolites determined by nitrogen adsorptions Zeolites. ,vol. 11, pp. 345- 348 ,(1991) , 10.1016/0144-2449(91)80298-E