✦ LIBER ✦

13C MAS NMR of organic templates in zeolites

✍ Scribed by M Kovalakova; B.H Wouters; P.J Grobet

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 236 KB
Volume: 22
Category: Article
ISSN: 1387-1811
DOI: 10.1016/s1387-1811(98)00097-3

No coin nor oath required. For personal study only.

✦ Synopsis

Cross-polarization (CP) combined with magic-angle spinning (MAS) is the most popular technique used for the high-resolution solid 13C study of occluded templates in zeolitic materials. Depending on the mobility of the incorporated templates the high-power decoupling (DEC ) technique is more suitable to detect and to quantify templates in zeolites. By this technique, high-resolution MAS NMR spectra, displaying quantitative reliable 13C signal intensities of the occluded templates, are obtained in ZSM-5, SAPO-37 and the mazzite structure.

📜 SIMILAR VOLUMES

Measurement of Temperature in 13C CP/MAS

Measurement of Temperature in 13C CP/MAS NMR

✍ Frank G. Riddell; Roger A. Spark; Gabor V. Günther 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 410 KB 👁 2 views

A method for temperature calibration of CP/MAS NMR probes and their temperature controllers is described that relies upon known phase changes in the compounds adamantane, d-camphor, pivalic acid and DABCO. The method appears to give a convenient and reliable calibration over the temperature range cu

MAS-NMR spectroscopic study of water in

MAS-NMR spectroscopic study of water in zeolites

✍ Paul H. Kasai; Paul M. Jones 📂 Article 📅 1984 🏛 Elsevier Science ⚖ 674 KB

13C CP/MAS NMR studies of flavonoids

✍ Iwona Wawer; Agnieszka Zielinska 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB

## Abstract ^13^C CP/MAS NMR spectra were recorded to characterize the solid‐state conformation of flavonoids: galangin, kaempferol, quercetin, myricetin, chrysin, apigenin, luteolin, acacetin, hesperetin and naringenin. Correct assignment of the signals in solution‐state spectra (using APT, HSQC a

13C CP/MAS NMR in trans-β-carotene

✍ Waclaw Kolodziejski; Teresa Kasprzycka-Gutman 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 135 KB

13 C CPrMAS NMR spectra of solid trans-b-carotene were assigned, compared with crystallographic data and discussed in terms of molecular motion.

13C-19F Dipolar Dephasing in Monofluorin

13C-19F Dipolar Dephasing in Monofluorinated Organic Substances. Characterization by 1H-13C-19F Triple-Resonance 13C CP/MAS and 19F MAS NMR

✍ E.W. Hagaman 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 587 KB

Quantitative multinuclear MAS NMR studie

Quantitative multinuclear MAS NMR studies of zeolites

✍ M Müller; G Harvey; R Prins 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 160 KB