Separation of high purity indole from coal tar by high pressure crystallization

Yoshitaka Yamamoto; Yoshiki Sato; Takeo Ebina; Chiaki Yokoyama; Sinji Takahasi; Yutaka Mito; Harumasa Tanabe; Nobuhiko Nishiguchi; Kohichi Nagaoka

doi:10.1016/0016-2361(91)90039-D

Separation of high purity indole from coal tar by high pressure crystallization

Yoshitaka Yamamoto, Yoshiki Sato, Takeo Ebina, Chiaki Yokoyama, Sinji Takahasi, Yutaka Mito, Harumasa Tanabe, Nobuhiko Nishiguchi, Kohichi Nagaoka

Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

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 °C under a pressure of 2000 kgf cm^-2 from the model mixture contaning 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.

Original language	English
Pages (from-to)	565-566
Number of pages	2
Journal	Fuel
Volume	70
Issue number	4
DOIs	https://doi.org/10.1016/0016-2361(91)90039-D
Publication status	Published - 1991 Apr

Keywords

coal tar
crystallization
separation

ASJC Scopus subject areas

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

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10.1016/0016-2361(91)90039-D

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title = "Separation of high purity indole from coal tar by high pressure crystallization",

abstract = "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 °C under a pressure of 2000 kgf cm-2 from the model mixture contaning 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.",

keywords = "coal tar, crystallization, separation",

author = "Yoshitaka Yamamoto and Yoshiki Sato and Takeo Ebina and Chiaki Yokoyama and Sinji Takahasi and Yutaka Mito and Harumasa Tanabe and Nobuhiko Nishiguchi and Kohichi Nagaoka",

year = "1991",

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language = "English",

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T1 - Separation of high purity indole from coal tar by high pressure crystallization

AU - Yamamoto, Yoshitaka

AU - Sato, Yoshiki

AU - Ebina, Takeo

AU - Yokoyama, Chiaki

AU - Takahasi, Sinji

AU - Mito, Yutaka

AU - Tanabe, Harumasa

AU - Nishiguchi, Nobuhiko

AU - Nagaoka, Kohichi

PY - 1991/4

Y1 - 1991/4

N2 - 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 °C under a pressure of 2000 kgf cm-2 from the model mixture contaning 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.

AB - 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 °C under a pressure of 2000 kgf cm-2 from the model mixture contaning 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.

KW - coal tar

KW - crystallization

KW - separation

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DO - 10.1016/0016-2361(91)90039-D

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SN - 0016-2361

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SP - 565

EP - 566

JO - Fuel

JF - Fuel

IS - 4

ER -

Separation of high purity indole from coal tar by high pressure crystallization

Abstract

Keywords

ASJC Scopus subject areas

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