SOLID ACID CATALYST

Japanese Patent JP3942809

B2

PROBLEM TO BE SOLVED: To obtain higher activity and durability by using a catalyst composition having a structure removing a hydrogen atom from at least one OH group in an inorganic phosphoric acid and a structure removing a hydrogen atom from at least one OH group in an organic phosphoric acid represented by a specific formula, and containing a specific metal atom such as aluminum.
SOLUTION: This solid acid catalyst has structures (A) and (B), and a metal atom (C); (A): a structure obtained by removing a hydrogen atom from at least one OH group in an inorganic phosphoric acid; (B): a structure obtained by removing a hydrogen atom from at least one OH group in an organic phosphoric acid represented by formula I or formula II (wherein -R1 and -R2 are independently selected from -R, -OR, -OH and -H, and at least one of -R1 and -R2 is -R or -OR, provided that -R is a 1-22C organic group.); and (C): one or more metal atoms selected from among aluminum, gallium and iron. As a result, the catalyst exhibits higher activity and durability.

JPH07316127	PRODUCTION OF 2,2,4,6,6-PENTAMETHYLHEPTANE-4-THIOL
WO/1995/029755	HETEROGENEOUS METATHESIS CATALYST

Mimura Taku
Jun Kaida
Noriaki Fukuoka
Yasuyuki Hattori

JP2000184236A

July 11, 2007

June 20, 2000

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Kao Corporation

B01J31/14; B01J31/26; B01J31/28; C07B61/00; C07C41/50; C07C43/315; C07C67/03; C07C67/08; C07C69/26; (IPC1-7): B01J31/14; B01J31/26; B01J31/28; C07C41/50; C07C43/315; C07C67/03; C07C67/08; C07C69/26; //C07B61/00

JP9118650A
JP9268156A
JP2001524536A
JP5271217A

Satoshi Furuya
Kaoru Furuya
Takahiko Mizobe
Shinji Mochida

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