Observation and study of new tetrahedral Al sites in NH3-treated, steamed zeolites using MAS 27Al and 15N n.m.r.

[1]  J. Fripiat,et al.  Lewis Acid Sites and Surface Aluminum in Aluminas and Zeolites: A High-Resolution NMR Study , 1994 .

[2]  R. Pool.  The Smallest Chemical Plants , 1994 .

[3]  E. Oldfield,et al.  Spectral editing : a quantitative application of spin-echo nuclear magnetic resonance spectroscopy to the study of 27Al in zeolite catalysts , 1994 .

[4]  A. Samoson,et al.  Double rotation and variable field 27Al n.m.r. study of dealuminated Y zeolites , 1993 .

[5]  G. Kramer,et al.  Understanding the acid behaviour of zeolites from theory and experiment , 1993, Nature.

[6]  J. Thomas.  Solid Acid Catalysts , 1992 .

[7]  H. J. Jakobsen,et al.  27Al&{1H} cross-polarization and ultrahigh-speed 27Al MAS NMR spectroscopy in the characterization of USY zeolites , 1991 .

[8]  É. Lippmaa,et al.  Quantitative high-resolution 27Al NMR: tetrahedral non-framework aluminium in hydrothermally treated zeolites , 1987 .

[9]  G. W. Kirker,et al.  First observation of 5-coordinate aluminum by MAS aluminum-27 NMR in well-characterized solids , 1986 .

[10]  É. Lippmaa,et al.  High-resolution aluminum-27 NMR of aluminosilicates , 1986 .

[11]  W. S. Veeman,et al.  27Al nutation NMR of zeolites , 1985 .

[12]  W. S. Veeman,et al.  Effect of hydration on the local symmetry around aluminum in ZSM-5 zeolites studied by aluminum-27 nuclear magnetic resonance , 1983 .

[13]  H. Pfeifer,et al.  N.m.r. studies of aluminium in zeolites , 1983 .

[14]  J. Uytterhoeven,et al.  Studies of the Hydrogen Held by Solids. VIII. The Decationated Zeolites , 1965 .

[15]  Xiao-li Yang.  STRUCTURE IDENTIFICATION OF INTERMEDIATE ALUMINUM SPECIES IN USY ZEOLITES USING HIGH-RESOLUTION AND SPIN-LATTICE RELAXATION 27AL NMR , 1995 .

[16]  H. Pfeifer,et al.  NMR Studies of Zeolites , 1994 .

[17]  Y. Wu,et al.  Double rotation and magic-angle spinning NMR study of an ultrastable Y zeolite , 1994 .

[18]  H. Pfeifer,et al.  Magic-angle-spinning NMR studies of acid sites in zeolite H-ZSM-5 , 1991 .

[19]  A. Corma,et al.  Extraframework aluminium in steam- and SiCl4-dealuminated Y zeolite. A 27Al and 29Si nuclear magnetic resonance study , 1988 .

[20]  A. W. Peters,et al.  Penta-co-ordinated aluminium in zeolites and aluminosilicates , 1987 .

[21]  H. Kawakami,et al.  Quantum chemical studies of alumina. Part 3.—Acidity and basicity of the spinel-type crystal , 1986 .

[22]  J. Klinowski,et al.  High-resolution solid-state nuclear magnetic resonance studies of dealuminated zeolite Y , 1985 .

[23]  J. Klinowski,et al.  The Study of Aluminosilicate and Related Catalysts by High-Resolution Solid-State NMR Spectroscopy , 1985 .

[24]  J. Klinowski.  Nuclear magnetic resonance studies of zeolites , 1984 .