SEPARATION OF HIGH-PURITY INDOLE FROM COAL-TAR BY HIGH-PRESSURE CRYSTALLIZATION

被引：40

作者：

YAMAMOTO, Y

SATO, Y

EBINA, T

YOKOYAMA, C

TAKAHASI, S

MITO, Y

TANABE, H

NISHIGUCHI, N

NAGAOKA, K

机构：

[1] TOHOKU UNIV,CHEM RES INST NONAQUEOUS SOLUT,AOBA KU,SENDAI,MIYAGI 980,JAPAN

[2] KOBE STEEL LTD,CHEM IND RES CTR,CHUO KU,KOBE 651,JAPAN

来源：

FUEL | 1991年 / 70卷 / 04期

关键词：

COAL TAR; CRYSTALLIZATION; SEPARATION;

D O I：

10.1016/0016-2361(91)90039-D

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

High pressure crystallization has been applied to the separation and purification of indole from a model mixture of crude coal tar. Indole with 98.6 wt% purity was separated at 50-degrees-C under a pressure of 2000 kgf cm-2 from the model mixture containing 69.3 wt% indole. Successive 'depressurization sweating' increased the purity of indole up to 99.5 wt%. The equilibrium of the system under high pressure was also studied.

引用

页码：565 / 566

页数：2

共 7 条

[1] CONCENTRATION OF PYRROLES AND PHENOLS FROM COAL-TAR PITCH BY ORGANIC-SOLVENT EXTRACTION [J].