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Quantitative determination of acid oils in low-temperature coal tar by means of fractional distillation

Journal Article:

Abstract

The aromatic hydroxy compounds in low-temperature tar were separated, and 75 compounds in the boiling range 180/sup 0/ to 320/sup 0/ isolated by means of fractional distillation in packed columns of at least 45 theoretical plates. Mixtures not separable by fractionation were separated by means of other physicochemical or chemical methods. Hydroxy compounds with boiling point up to 230/sup 0/C were detemined quantitatively, as were the phenols present in low-temperature carbonization liquors. With the Krupp-Lurgi process of low-temperature carbonization, 1.8% phenol, 1.8% o-cresol, and 3.6% m-p-cresols were formed. The tar contained up to 1.3% 1:3:5-xylenol and up to 0.9% 1:2:4-xylenol. Of the 12.1% v/v of phenol, cresols, and xylenols present in tar, 11.2% were determined quantitatively, and 9 hydroxy compounds were identified in the remaining 0.9%. On the basis of these investigations, a technical plant that permitted the recovery of pure low-temperature tar phenols and the preparation of a number of different phenol resins from the mixtures was erected.
Authors:
Publication Date:
Jan 01, 1950
Product Type:
Journal Article
Reference Number:
EDB-80-043568
Resource Relation:
Journal Name: Angew. Chem.; (Germany, Federal Republic of); Journal Volume: 62
Subject:
01 COAL, LIGNITE, AND PEAT; COAL TAR; CHEMICAL ANALYSIS; CRESOLS; SEPARATION PROCESSES; HYDROXY COMPOUNDS; PHENOLS; RECOVERY; XYLENOLS; COAL TAR ACIDS; COAL TAR OILS; DISTILLATION; AROMATICS; OILS; ORGANIC ACIDS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; TAR; 010600* - Coal, Lignite, & Peat- Properties & Composition; 010500 - Coal, Lignite, & Peat- Products & By-Products
OSTI ID:
5699401
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ANCEA
Submitting Site:
TIC
Size:
Pages: 449
Announcement Date:

Journal Article:

Citation Formats

Jaeger, A. Quantitative determination of acid oils in low-temperature coal tar by means of fractional distillation. Germany: N. p., 1950. Web.
Jaeger, A. Quantitative determination of acid oils in low-temperature coal tar by means of fractional distillation. Germany.
Jaeger, A. 1950. "Quantitative determination of acid oils in low-temperature coal tar by means of fractional distillation." Germany.
@misc{etde_5699401,
title = {Quantitative determination of acid oils in low-temperature coal tar by means of fractional distillation}
author = {Jaeger, A}
abstractNote = {The aromatic hydroxy compounds in low-temperature tar were separated, and 75 compounds in the boiling range 180/sup 0/ to 320/sup 0/ isolated by means of fractional distillation in packed columns of at least 45 theoretical plates. Mixtures not separable by fractionation were separated by means of other physicochemical or chemical methods. Hydroxy compounds with boiling point up to 230/sup 0/C were detemined quantitatively, as were the phenols present in low-temperature carbonization liquors. With the Krupp-Lurgi process of low-temperature carbonization, 1.8% phenol, 1.8% o-cresol, and 3.6% m-p-cresols were formed. The tar contained up to 1.3% 1:3:5-xylenol and up to 0.9% 1:2:4-xylenol. Of the 12.1% v/v of phenol, cresols, and xylenols present in tar, 11.2% were determined quantitatively, and 9 hydroxy compounds were identified in the remaining 0.9%. On the basis of these investigations, a technical plant that permitted the recovery of pure low-temperature tar phenols and the preparation of a number of different phenol resins from the mixtures was erected.}
journal = {Angew. Chem.; (Germany, Federal Republic of)}
volume = {62}
journal type = {AC}
place = {Germany}
year = {1950}
month = {Jan}
}