𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A comprehensive thermal study of the state of tetrapropylammonium (TPA) phase in ZSM-5

✍ Scribed by Mohammed E. Kassem; Moein B. Sayed; Wafaa M. Arafa; Hussein M. El-Samman; Ismail M. Al-Emadi


Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
596 KB
Volume
197
Category
Article
ISSN
0040-6031

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Identification of different tetrapropyla
✍ J. El Hage-Al Asswad; N. Dewaele; J.B. Nagy; R.A. Hubert; Z. Gabelica; E.G. Dero πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 464 KB

The combined use of thermal analysis (t.g.-d.t.a.) and 13C-n.m.r. spectroscopy allows one to identify four different structural environments for TPA + ions occluded in the ZSM-5 channels. A first low-temperature (ca. 380Β°C) d.t.a, peak is assigned to less strongly held or outer shell "strained" TPA

Calorimetric study of the monoclinic-ort
✍ Akira Endoh πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 173 KB

The transition temperature (340 K) and enthalpy change (3.7 + 0.5 kJ mo1-1) of the monoclinic-orthorhombic phase transition in highly siliceous zeolite ZSM-5 (Si/AI = 639) were measured by differential scanning calorimetry (d.s.c.). The transition temperature determined is in agreement with that due

On the Existence of CuI Pairs in ZSM-5β€”A
✍ Philipp Spuhler; Max C. Holthausen; Dana NachtigallovΓ‘; Petr Nachtigall; Joachim πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 548 KB

The siting and coordination of Cu(I) pairs in zeolite ZSM-5 have been studied by means of a combined quantum mechanics/interatomic potential function technique (QM-Pot). It couples a density functional theory (DFT) description employing a hybrid functional (B3LYP) for copper ions, including their lo

High-resolution solid-state nuclear magn
✍ R. Gougeon; L. Delmotte; P. Reinheimer; B. Meurer; J. M. ChΓ©zeau πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 256 KB πŸ‘ 2 views

The dynamics of tetrapropylammonium (TPA) cations occluded during the synthesis of a siliceous MFI zeolite were investigated by several 13C high-resolution NMR methods. This work follows and complements a previous 1H broad-line NMR study of this material. The evolution of the 13C cross polarization