𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The insoluble matter of coal tar. VI. Oxidation of free carbon

✍ Scribed by Green, S. J. ;Thakur, B.

Publisher
Wiley (John Wiley & Sons)
Year
1950
Weight
780 KB
Volume
69
Category
Article
ISSN
0368-4075

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Work on the oxidation of carbonaceous materials with alkaline potassium permanganate is briefly outlined and the experimental step‐wise oxidation of free carbon is described. The course of reaction as interpreted from these results is indicated. Bulk oxidation of free carbon and the nature of the products are reported. In the steam‐volatile fraction, formic, acetic and butyric acids have been identified. The water‐soluble non‐volatile acids and their methyl esters have been fractionated. Oxalic, succinic, phthalic, terephthalic and mellitic acids have been identified in the oxidation products. The major portion of the acids, however, was found to be more complex, probably having polynuclear structures.

Oxidation of C~1~ and C~2~ shows that C~3~ is more highly condensed than C~2~ and resembles graphite and coke in its properties.

📜 SIMILAR VOLUMES

The Insoluble matter of coal tar. II. Pr
The Insoluble matter of coal tar. II. Preliminary work on free carbon
✍ Green, S. J. ;Thakur, B. 📂 Article 📅 1948 🏛 Wiley (John Wiley & Sons) ⚖ 476 KB

## Abstract The effect of previous conditions of preparation and storage of coal tars on the amount of fre carbon determined by insolubility in toluene has been investigated. Pressure is shown to have little effect but at atmospheric pressure there is progressive increase in free carbon. With risin

The insoluble matter of coal tar III. So
The insoluble matter of coal tar III. Some inorganic constitutents of free carbon
✍ Green, S. J. ;Thakur, B. 📂 Article 📅 1948 🏛 Wiley (John Wiley & Sons) ⚖ 282 KB

## Abstract The inorganic constituents of coals are bricfly reviewed and their subsequent history during combustion and carbonization is considered. The cxamination is reported of the zinc‐pyridine complex obtained from a free carbon sample by extraction with water. Examination for other elements i

The insoluble matter of coal tar. IV. Co
The insoluble matter of coal tar. IV. Coal tar resins
✍ Green, S. J. ;Mukherji, S. M. 📂 Article 📅 1948 🏛 Wiley (John Wiley & Sons) ⚖ 445 KB

## Abstract The So‐called coal tar resins are defined and their preparation from vertical retort tar and pitch is described. The resins are divided into resinols, resinoic acids, resinenes, and resinamines, about 99% consisting of resinenes. The importance of dxygen in these compounds is discussed.

The insoluble matter of coal tar. V. Coa
The insoluble matter of coal tar. V. Coal tar resins
✍ Green, S. J. ;Mukherji, S. M. 📂 Article 📅 1949 🏛 Wiley (John Wiley & Sons) ⚖ 486 KB

## Abstract Further work on resinenes is reported including hydrolysis, bromination, thermal decomposition, dehydrogenation, hydrogenation, and alk line permanganate oxidation. The resinenes give neutral and phenolic products on hydrolysis. Dehydrogenation with selenium gives neutral and phenolic p

The Insoluble Matter of Coal tar. I. Int
The Insoluble Matter of Coal tar. I. Introduction
✍ Green, S. J. ;Ward, Stacey G. 📂 Article 📅 1948 🏛 Wiley (John Wiley & Sons) ⚖ 272 KB

## Abstract Various methods available for the determination of the insoluble matter of coal tar are briefly reviewed and published work on the nature of free carbon and the coal‐tar resins is considered. The problems associated with free carbon are introduced and the scope of the investigation prop