Calorimetric study of the acidity of a new family of mesoporous catalysts

被引：8

作者：

d'Arbonneau, S ^{[1
]}

Tuel, A ^{[1
]}

Auroux, A ^{[1
]}

机构：

[1] Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1999年 / 56卷 / 01期

关键词：

acidity; AlPO; calorimetry; mesoporous catalysts; SAPO;

D O I：

10.1023/A:1010126012231

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermally stable mesoporous aluminophosphates (AlPO) and silicoaluminophosphates (SAPO) were prepared at room temperature in the presence of a cationic surfactant and an organic base. These materials possess high surface areas and regular mesopores of approximately 35 Angstrom diameter. By contrast to microporous crystalline aluminophosphate molecular sieves, mesoporous compounds are amorphous and characterized by AVP ratios greater than 1. These particularities are responsible for a strong Lewis acidity, as evidenced by ammonia adsorption microcalorimetry. Mesoporous materials are more acidic than the microporous analogues and the amount of strong acid sites increases with the silicon content.

引用

页码：287 / 296

页数：10

共 14 条

[1] SYNTHESIS OF HEXAGONALLY PACKED MESOPOROUS TIO2 BY A MODIFIED SOL-GEL METHOD [J].

ANTONELLI, DM ;

YING, JY .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1995, 34 (18) :2014-2017

[2] Acidity characterization by microcalorimetry and relationship with reactivity [J].

Auroux, A .

TOPICS IN CATALYSIS, 1997, 4 (1-2) :71-89

[3] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].

BECK, JS ;

VARTULI, JC ;

ROTH, WJ ;

LEONOWICZ, ME ;

KRESGE, CT ;

SCHMITT, KD ;

CHU, CTW ;

OLSON, DH ;

SHEPPARD, EW ;

MCCULLEN, SB ;

HIGGINS, JB ;

SCHLENKER, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843

[4] Synthesis and characterization of mesoporous SAPO [J].

Chakraborty, B ;

Pulikottil, AC ;

Das, S ;

Viswanathan, B .

CHEMICAL COMMUNICATIONS, 1997, (10) :911-912

[5] ORGANIZATION OF ORGANIC-MOLECULES WITH INORGANIC MOLECULAR-SPECIES INTO NANOCOMPOSITE BIPHASE ARRAYS [J].

HUO, QS ;

MARGOLESE, DI ;

CIESLA, U ;

DEMUTH, DG ;

FENG, PY ;

GIER, TE ;

SIEGER, P ;

FIROUZI, A ;

CHMELKA, BF ;

SCHUTH, F ;

STUCKY, GD .

CHEMISTRY OF MATERIALS, 1994, 6 (08) :1176-1191

[6] Microcalorimetric and spectroscopic studies of the acidic- and physisorption characteristics of MCM-41 and zeolites [J].

Janchen, J ;

Stach, H ;

Busio, M ;

van Wolput, JHMC .

THERMOCHIMICA ACTA, 1998, 312 (1-2) :33-45

[7] PREPARATION AND CHARACTERIZATION OF MESOPOROUS, HIGH-SURFACE-AREA ZIRCONIUM(IV) OXIDES [J].

KNOWLES, JA ;

HUDSON, MJ .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1995, (20) :2083-2084

[8] Acidity of substituted MCM-41-type mesoporous silicates probed by ammonia [J].

Kosslick, H ;

Landmesser, H ;

Fricke, R .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (09) :1849-1854

[9] Characterization of aluminophosphate-based tubular mesoporous molecular sieves [J].

Luan, ZH ;

Zhao, DY ;

He, HY ;

Klinowski, J ;

Kevan, L .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (07) :1250-1259

[10] Effects of the nature of the aluminum source on the acidic properties of some mesostructured materials [J].

Occelli, ML ;

Biz, S ;

Auroux, A ;

Ray, GJ .

MICROPOROUS AND MESOPOROUS MATERIALS, 1998, 26 (1-3) :193-213

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