SOLID PHOSPHORIC ACID CATALYST AND METHODS OF DIMERIZING OLEFIN WITH THE SAME

Title:

SOLID PHOSPHORIC ACID CATALYST AND METHODS OF DIMERIZING OLEFIN WITH THE SAME

Document Type and Number:

WIPO Patent Application WO/2006/009229

Kind Code:

A1

Abstract:

A solid phosphoric acid catalyst which attains high activity and dimer selectivity in olefin dimerization reactions; and efficient methods for olefin dimerization which comprise using the catalyst. The solid phosphoric acid catalyst comprises a siliceous support and one or more phosphoric acids deposited thereon, the proportion of orthophosphoric acid in the phosphoric acids deposited being 60 mol% or higher in terms of phosphorus atom amount. The solid phosphoric acid catalyst is prepared by contacting a siliceous support with an aqueous phosphoric acid solution and then drying the support, the preparation steps being conducted at a temperature lower than 100°C. Also provided is a method in which an olefin-containing raw material is brought into contact with the catalyst. Furthermore provided are: the method in which the olefin-containing raw material is regulated so as to contain water in an amount of 10-1,000 mass ppm; the method in which the olefin-containing raw material is brought into contact with the solid phosphoric acid catalyst in a liquid phase; and the method in which the olefin is a C_3-7 monoolefin.

More Like This:

JPH0672972

PRODUCTION OF ORTHO-PHENYLENEDIAMINE

Inventors:

HAMAMATSU TATSUO (JP)
KIMURA NOBUHIRO (JP)
TAKASHIMA TSUTOMU (JP)
MORIKITA TAKASHI (JP)

Application Number:

PCT/JP2005/013427

Publication Date:

January 26, 2006

Filing Date:

July 13, 2005

Export Citation:

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Assignee:

NIPPON PETROCHEMICALS CO LTD (JP)
HAMAMATSU TATSUO (JP)
KIMURA NOBUHIRO (JP)
TAKASHIMA TSUTOMU (JP)
MORIKITA TAKASHI (JP)

International Classes:

B01J27/16; B01J37/02; C07B61/00; C07C2/18; C07C9/16; (IPC1-7): B01J27/16; B01J37/02; C07B61/00; C07C2/18; C07C9/16

Foreign References:

JP2001199907A	2001-07-24
JPS472863A
JPS4729292A
JPS5226389A	1977-02-26
JPH11314040A	1999-11-16

Other References: