Abstract
| Original language | English |
|---|---|
| Title of host publication | Innovation in zeolite materials science : proceedings of an international symposium, Nieuwpoort (Belgium), September 13-17, 1987 |
| Editors | P.J. Grobet, W.J. Mortier, E.F. Vansant, G. Schulz-Ekloff |
| Place of Publication | Amsterdam |
| Publisher | Elsevier |
| Pages | 167-174 |
| DOIs | |
| Publication status | Published - 1988 |
Publication series
| Name | Studies in Surface Science and Catalysis |
|---|---|
| Volume | 37 |
| ISSN (Print) | 0167-2991 |
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Clusters of terminal groups in ZSM-5 : a study performed by silylation and 29Si CP MAS NMR. / Kraushaar, B.; Ven, van de, L.J.M.; Haan, de, J.W.; Hooff, van, J.H.C.
Innovation in zeolite materials science : proceedings of an international symposium, Nieuwpoort (Belgium), September 13-17, 1987. ed. / P.J. Grobet; W.J. Mortier; E.F. Vansant; G. Schulz-Ekloff. Amsterdam : Elsevier, 1988. p. 167-174 (Studies in Surface Science and Catalysis; Vol. 37).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
TY - GEN
T1 - Clusters of terminal groups in ZSM-5 : a study performed by silylation and 29Si CP MAS NMR
AU - Kraushaar, B.
AU - Ven, van de, L.J.M.
AU - Haan, de, J.W.
AU - Hooff, van, J.H.C.
PY - 1988
Y1 - 1988
N2 - Silylation with trimethylchlorosilane and subsequent analyses of the products by 29Si CP MAS NMR is an appropriate method for the characterization of terminal groups in ZSM-5. It can be shown that the terminal groups are clustered and belong to gaps of missing T-atoms (Si or Al). These gaps are part of regularly 4-membered and larger rings in the lattice of ZSM-5. During prolonged heat treatment of ZSM-5 the amount of internal terminal groups decreases. We propose a T-jump mechanism of the gaps resulting in a migration of the terminal groups towards the external surface of the zeolite particles.
AB - Silylation with trimethylchlorosilane and subsequent analyses of the products by 29Si CP MAS NMR is an appropriate method for the characterization of terminal groups in ZSM-5. It can be shown that the terminal groups are clustered and belong to gaps of missing T-atoms (Si or Al). These gaps are part of regularly 4-membered and larger rings in the lattice of ZSM-5. During prolonged heat treatment of ZSM-5 the amount of internal terminal groups decreases. We propose a T-jump mechanism of the gaps resulting in a migration of the terminal groups towards the external surface of the zeolite particles.
U2 - 10.1016/S0167-2991(09)60593-0
DO - 10.1016/S0167-2991(09)60593-0
M3 - Conference contribution
T3 - Studies in Surface Science and Catalysis
SP - 167
EP - 174
BT - Innovation in zeolite materials science : proceedings of an international symposium, Nieuwpoort (Belgium), September 13-17, 1987
A2 - Grobet, P.J.
A2 - Mortier, W.J.
A2 - Vansant, E.F.
A2 - Schulz-Ekloff, G.
PB - Elsevier
CY - Amsterdam
ER -