Catalytic properties of SO42-/Ti-M-O superacids in esterification

被引：33

作者：

Lu, GZ

机构：

[1] Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 133卷 / 01期

基金：

上海市自然科学基金;

关键词：

solid superacids; esterification; acid strength distribution; dioctyl phthalate synthesis;

D O I：

10.1016/0926-860X(95)00170-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SO42-/Ti-M-O (M=Al, Fe, Sn) solid superacids were used in the esterification of phthalic anhydride with 2-ethyl hexyl alcohol. The catalytic activity of SO42-/Ti-Al-Sn-O (1) is higher than SO42-/TiO2, and SO42-/Ti-Al-O solid superacids. In the presence of(1) DOP is prepared in good yield at 175 degrees C over a period of 6 h. The acid strength, surface area and catalytic activity of SO42-/Ti-M-O are obviously affected by the preparation conditions. Temperature-programmed desorption of pyridine adsorbed on the catalyst was used to characterize the acid strength distribution of the catalysts. It was found that there were three kinds of acid sites (weak acid, middle acid and superacid) on SO42-/Ti-Al-O, and the concentration of the middle-acid site on the catalysts is directly proportional to its catalytic activity for the esterification. Adding Al into SO42-/TiO2 could increase its surface area greatly.

引用

页码：11 / 18

页数：8

共 11 条

[1] PREPARATION OF SUPERACIDS BY METAL-OXIDES AND THEIR CATALYTIC ACTION [J].

ARATA, K ;

HINO, M .

MATERIALS CHEMISTRY AND PHYSICS, 1990, 26 (3-4) :213-237

[2] SOLID CATALYSTS TREATED WITH ANIONS .13. SYNTHESIS OF ESTERS FROM TEREPHTHALIC AND PHTHALIC ACIDS WITH N-OCTYL AND 2-ETHYLHEXYL ALCOHOL, ACRYLIC-ACID WITH ETHANOL AND SALICYLIC-ACID WITH METHANOL CATALYZED BY SOLID SUPERACID [J].

HINO, M ;

ARATA, K .

APPLIED CATALYSIS, 1985, 18 (02) :401-404

[3]

LI RS, 1992, REACT KINET CATAL L, V48, P483

[4]

LU G, 1993, GONGYE CUIHUA, V1, P3

[5]

LU G, 1993, J RARE EARTHS, V11, P263

[6]

LU G, 1994, GONGYE CHUIHUA, V2, P14

[7] SOLID CATALYST TREATED WITH ANION .19. SYNTHESIS OF THE SOLID SUPERACID CATALYST OF TIN OXIDE TREATED WITH SULFATE ION [J].

MATSUHASHI, H ;

HINO, M ;

ARATA, K .

APPLIED CATALYSIS, 1990, 59 (02) :205-212

[8]

TANABE K, 1989, STUD SURF SCI CATAL, V51, P204

[9]

THORAT TS, 1992, APPL CATAL A-GEN, V90, P73

[10]

XU Z, 1989, CHEM J CHINESE U, V10, P778

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