METHOD OF DEHYDROGENATING TRIISOPROPYLBENZENE AND DIISOPROPYLBENZENE

Title:

METHOD OF DEHYDROGENATING TRIISOPROPYLBENZENE AND DIISOPROPYLBENZENE

Document Type and Number:

WIPO Patent Application WO/2001/016062

Kind Code:

A1

Abstract:

An economical and industrial method for dehydrogenating triisopropylbenzene to produce diisopropylisopropenylbenzene, isopropyldiisopropenylbenzene, and/or triisopropenylbenzene, which comprises using a solid catalyst consisting mainly of an iron compound and a potassium compound or a solid catalyst consisting mainly of an iron compound, a potassium compound, and a magnesium compound as a catalyst for the dehydrogenation to conduct the reaction. The dehydrogenation of triisopropylbenzene or diisopropylbenzene with the aid of either of the solid catalysts is continuously conducted with intervals of catalyst regeneration with steam, oxygen, or air. Thus, the life of the catalyst is prolonged. The dehydrogenation method is economical and is suitable for and superior in industrial production.

Inventors:

WATANABE HIROYOSHI (JP)
MATSUSHITA TATSUMI (JP)
AOKI SHINOBU (JP)
NAGAI NAOSHI (JP)
KUBOYAMA HISAHARU (JP)

Application Number:

PCT/JP2000/005870

Publication Date:

March 08, 2001

Filing Date:

August 30, 2000

Export Citation:

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Assignee:

MITSUI CHEMICALS INC (JP)
WATANABE HIROYOSHI (JP)
MATSUSHITA TATSUMI (JP)
AOKI SHINOBU (JP)
NAGAI NAOSHI (JP)
KUBOYAMA HISAHARU (JP)

International Classes:

B01J23/76; B01J23/78; B01J23/94; C07C5/333; (IPC1-7): C07C15/44; C07C5/333; B01J38/06; B01J23/94

Domestic Patent References:

WO1999003806A1	1999-01-28
WO1991006366A1	1991-05-16

Foreign References:

US4681892A	1987-07-21
US4528413A	1985-07-09
US3429941A	1969-02-25
EP0177832A2	1986-04-16
US3907916A	1975-09-23
JPH05246908A	1993-09-24

Other References: