Carbonization of tetra-(octadecyl) titanate under very high pressures

✍ Scribed by Isao Tomizuka; Yoshio Tanaka

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 615 KB
• Volume: 17
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(79)90050-2

✦ Synopsis

Tetra-(o&de& titanate, a less reactive organic titanate. was carbonized under pressures up to 60 kb and the products were iniestigated by X-ray diffractoietry and electron microscopy. The c&onization occurred on the high temperature side of a line connecting atmospheric-pressure/2WC and 60 kb/WC in the p-T chart. I)ue to explosions, however, flawless products could be recovered only above 30 kb and not far off the line. All the recovered carbonized products showed higher carbon yields and larger X-ray &values than the equivalents obtained by pyrolyses under atmospheric pressure. The product at 30 kb/42oOC was composed of rutile and needle-shaped carbon fragments of various lengths, in which short graphitic lattice fringes were found to be stacked across the fragment axis. The products under pressures of 50 kb or higher contained rutile, fi-titania and carbon fraements of numerous shanes. in which lattice fringes appeared rather irregular as compared with those in the 30 kb/&'C product.

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