Measurement of heat of argon adsorption for the evaluation of relative acid strength of some sulfated metal oxides and H-type zeolites

被引：42

作者：

Matsuhashi, H ^{[1
]}

Tanaka, T ^{[1
]}

Arata, K ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Sci, Hakodate, Hokkaido 0408567, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 40期

关键词：

D O I：

10.1021/jp0118017

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：

The relative acid strength of sulfated SnO2, sulfated ZrO2, silica-alumina, H-Y, H-ZSM-5, and H-mordenite was estimated by the heat of Ar adsorption, calculated from a temperature dependence of amount of Ar adsorption around room temperature. These were 23.5, 23.6, and 13.8-16.5 kJ mol(-1) for sulfated SnO2, sulfated ZrO2, and H-type zeolites, respectively. The data indicate that Ar is suitable for a probe molecule of acid sites on solid surface and that this technique is useful for evaluation of the acid strength of solid superacids.

引用

页码：9669 / 9671

页数：3

共 13 条

[1] Long-range interaction of alkali cations with the acidic OH groups in H-ZSM-5 [J].

Baba, T ;

Inoue, Y ;

Ono, Y .

JOURNAL OF CATALYSIS, 1996, 159 (01) :230-235

[2] CHARACTERIZATION AND SELECTIVE POISONING OF ACID SITES ON SULFATED ZIRCONIA [J].

FOGASH, KB ;

YALURIS, G ;

GONZALEZ, MR ;

OURAIPRYVAN, P ;

WARD, DA ;

KO, EI ;

DUMESIC, JA .

CATALYSIS LETTERS, 1995, 32 (3-4) :241-251

[3]

HALL WK, 1989, SURF SCI CATAL, V49, P1253

[4]

Ichimura K, 2000, CHEM LETT, P196

[5]

KATADA N, 2000, STUD SURF SCI CATAL, V130, P3213

[6] A stable argon compound [J].

Khriachtchev, L ;

Pettersson, M ;

Runeberg, N ;

Lundell, J ;

Räsänen, M .

NATURE, 2000, 406 (6798) :874-876

[7] THE ASSAY OF ACID SITES ON ZEOLITES AS MEASURED BY AMMONIA POISONING [J].

LOMBARDO, EA ;

SILL, GA ;

HALL, WK .

JOURNAL OF CATALYSIS, 1989, 119 (02) :426-440

[8] The preparation of solid superacid of sulfated tin oxide with acidity higher than sulfated zirconia [J].

Matsuhashi, H ;

Miyazaki, H ;

Arata, K .

CHEMISTRY LETTERS, 2001, (05) :452-453

[9] Temperature programmed desorption of argon for evaluation of surface acidity of solid superacids [J].

Matsuhashi, H ;

Arata, K .

CHEMICAL COMMUNICATIONS, 2000, (05) :387-388

[10] Skeletal isomerization mechanism of alkanes over solid superacid of sulfated zirconia [J].

Matsuhashi, H ;

Shibata, H ;

Nakamura, H ;

Arata, K .

APPLIED CATALYSIS A-GENERAL, 1999, 187 (01) :99-106

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