## Abstract The fully extended peptide conformation (2.0~5~‐helix) has been investigated for the first time in the solid‐state by ^13^C cross‐polarization magic angle spinning NMR. The compounds examined are members of a terminally protected, homo‐oligopeptide series (from monomer through hexamer)
97/02437 A modified cross-polarization magic angle spinning 13C NMR procedure for the study of humic materials
- Publisher
- Elsevier Science
- Year
- 1997
- Weight
- 202 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0140-6701
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✦ Synopsis
The thermodynamics and kinetics of the diethylbenzene-benzene transalkylation have been studied in liquid phase over faujasite Y in a batch reactor. The reactions were conducted at several temperatures between 423 and 513 K. The main product of the reaction was ethylbenzene.
When the molar ratio of benzene over diethylbenzene was greater than five, a selectivity in ethylbenzene greater than 90% was found. The initial rates showed that the transalkylation reaction followed a first order mechanism. A kinetic model is proposed.
📜 SIMILAR VOLUMES
## Abstract The channel‐type inclusion complex, (deoxycholic acid)~2~–ferrocene [(DCA)~2~–;ferrocene], was studied by ^13^C cross‐polarization/magic angle spinning NMR spectroscopy. The spectra indicate that two different DCA molecules are present in the crystalline structure. Relaxation data indic
The structure and composition of the interphase at the boundary of two immiscible phases has long been the subject of experimental and theoretical studies in polymer science. Cross-polarization between protons and deuterons offers the potential for elucidating the composition of the interphase if on