Adsorption and catalytic combustion of aromatics on platinum-supported MCM-41 materials

被引：68

作者：

Xia, QH ^{[1
]}

Hidajat, K ^{[1
]}

Kawi, S ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Environm Chem & Engn, Singapore 119260, Singapore

来源：

CATALYSIS TODAY | 2001年 / 68卷 / 1-3期

关键词：

catalytic combustion of aromatics; Pt/MCM-41; Pt-supported catalysts; impregnation; synthesis of MCM-41; oxidation;

D O I：

10.1016/S0920-5861(01)00285-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Among a series of Pt-supported catalysts prepared by impregnation, the most hydrophobic Pt-supported on MCM-41 (synthesized in the presence of fluoride anions) with large surface area and pore size is found to be the most active catalyst for the combustion of toluene in air, and its activity is maintained even in the presence of water. However, Pt/ZSM-5 with micropores, the smallest pore volume and the least hydrophobicity has the worst catalytic activity. The high oxidation activity of the catalyst depends mainly on its high hydrophobicity (characterized by selective adsorption for H2O and toluene and by FTIR spectra of surface hydroxyl groups) and partly on its large pore size and high Pt loading. The order of the oxidation activity of a series of aromatics with different molecular weight and different boiling point on Pt-supported MCM-41 catalyst is found to be as follows: toluene > benzene > cumene > ethyl benzene > mesitylene. (C) 2001 Elsevier Science BN. All rights reserved.

引用

页码：255 / 262

页数：8

共 23 条

[1] 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

[2]

Brinker C. J., 1990, SOL GEL SCI

[3] Low NOx options in catalytic combustion and emission control [J].

Burch, R .

CATALYSIS TODAY, 1997, 35 (1-2) :27-36

[4] REMOVAL AND DESTRUCTION OF BENZENE, TOLUENE, AND XYLENE FROM WASTE-WATER BY AIR STRIPPING AND CATALYTIC-OXIDATION [J].

CHUANG, KT ;

CHENG, S ;

TONG, SM .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (11) :2466-2472

[5] ACIDITY AND STABILITY OF MCM-41 CRYSTALLINE ALUMINOSILICATES [J].

CORMA, A ;

FORNES, V ;

NAVARRO, MT ;

PEREZPARIENTE, J .

JOURNAL OF CATALYSIS, 1994, 148 (02) :569-574

[6] Adsorption of lower alcohols from water solutions on high silica zeolites, mesoporous MCM-41 and AIPO(4)-5 [J].

Dahl, IM ;

Myhrvold, E ;

Slagtern, A ;

Stocker, M .

ADSORPTION SCIENCE & TECHNOLOGY, 1997, 15 (04) :289-299

[7]

GOLODETS GI, 1983, HETEROGENEOUS CATALY, P234

[8]

Guth J.L., 1986, Stud. Surf. Sci. Catal, V28, P121, DOI DOI 10.1016/50167-2991(09)60864-8

[9]

Heck R.M., 1995, CATALYTIC AIR POLLUT, P435

[10] Evaluation of γ-MnO2 as a VOC removal catalyst:: Comparison with a noble metal catalyst [J].

Lahousse, C ;

Bernier, A ;

Grange, P ;

Delmon, B ;

Papaefthimiou, P ;

Ioannides, T ;

Verykios, X .

JOURNAL OF CATALYSIS, 1998, 178 (01) :214-225

← 1 2 3 →