𝔖 Bobbio Scriptorium
✦   LIBER   ✦

High-temperature and high-pressure 1H NMR study on carbonization of pitch

✍ Scribed by S. Shimokawa; E. Yamada; T. Yokono; S. Iyama; Y. Sanada

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
321 KB
Volume
22
Category
Article
ISSN
0008-6223

No coin nor oath required. For personal study only.

✦ Synopsis

An autoclave-type 'H NMR probe has been developed to monitor the carbonization process of such carbonaceous materials as coal and pitch under high pressures up to 10 MPa. In the early stages of the carbonization of pitch, the change in hydrogen aromaticity, fHe, was found to be dependent on the applied pressure. The temperature at which fH, begins a marked rise increases with the applied pressure.

The effect of a ZnC1, catalyst on the carbonization reaction is aIs.0 discussed.

πŸ“œ SIMILAR VOLUMES

High-temperature high-pressure 1H-NMR st
High-temperature high-pressure 1H-NMR study on formation of carbon spherules
✍ S. Shimokawa; E. Yamada; T. Yokono; J. Yamada; Y. Sanada; M. Inagaki πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 182 KB

Carbon spherules, nuclear magnetic resonance (NMR), coal tar pitch, PVC pitch. Carbonization under pressure modifies the reaction process so as to give a high carbon yield and also to form a structure in the resultant solid carbon which is different from that formed under normal pressures. Marsh er

High temperature 1H-NMR study of coal an
High temperature 1H-NMR study of coal and pitch at the early stages of carbonization
✍ Kunio Miyazawa; Tetsuro Yokono; Yuzo Sanada πŸ“‚ Article πŸ“… 1979 πŸ› Elsevier Science 🌐 English βš– 225 KB

The temperature dependence of the 'H-NMR absorption in coats and pitches have been obtained using a pulsed Fourier transform NMR spectrometer with a high temperature probe. The samples as received were heated in the high temperature probe and NMR spectra were obtained simultaneously. With increasing

High-pressure high-temperature ESR in ea
High-pressure high-temperature ESR in early stage of carbonization of pitch
✍ T. Yokono; S. Iyama; Y. Sanada; K. Makino πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 283 KB

## Letters to the Editor 624 Isotropic Very fine-gralned mosdlc5 Fine-grained mosd~cs Flow domaln anlsotfopi elongated Fig. 1. Relation between D/A and size and extent of optical texture in coke. extended to various coals, pitches and their blending sys-2. T. Yokono, H. Marsh and M. Yokono, Fuel 6

Studies on the early stage of carbonizat
Studies on the early stage of carbonization of petroleum pitch by means of high-temperature 1H-NMR and ESR
✍ Kiyoshi Azami; Tetsuro Yokono; Yuzo Sanada; Seiichi Uemura πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 663 KB

The early stage of carbonization of petroleum pitches has been studied by in-situ, hightemperature 'H-NMR and ESR techniques. Well-resolved 'H-NMR spectra were found to provide cletailed information about the mesophase formation in the course of pyrolysis. The process of mesophase generation during