Evaluation of the efficiency of solvent extraction for template removal in the synthesis of MCM-41 type materials to be used as tobacco additives for smoke toxicity reduction

被引：14

作者：

Marcilla, A. ^{[1
]}

Beltran, M. ^{[1
]}

Gomez-Siurana, A. ^{[1
]}

Martinez, I. ^{[1
]}

Berenguer, D. ^{[1
]}

机构：

[1] Univ Alicante, Dpto Ingn Quim, E-03080 Alicante, Spain

来源：

APPLIED CATALYSIS A-GENERAL | 2010年 / 378卷 / 01期

关键词：

MCM-41; Template elimination; Tensioactive; Extraction; Additive; Tobacco; Smoke; SILICA; NITROSAMINES; CALCINATION; SURFACTANT; CIGARETTE; ZEOLITES; SBA-15;

D O I：

10.1016/j.apcata.2010.02.006

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：

In this work different methods of elimination of the organic template remaining in a piece of as-synthesized Si-MCM-41 material have been studied: calcination, and two different extraction processes, with ethanol and with hydrogen peroxide. TGA has been applied in order to analyze and to compare the characteristics of the materials obtained by the three different treatments studied. The textural properties of the samples resulting after the extraction of the template, as well as the resulting hydrothermal stability of the materials, have been evaluated. Finally, the ability of the different samples as tobacco additives in order to reduce tobacco toxicity has been studied. The results show that TGA is an excellent tool for the evaluation of the efficiency of the different treatments applied. It can be concluded that the samples treated with a mixture of HCl/EtOH and with hydrogen peroxide, respectively, are able to be used as tobacco additives. Depending of the experimental conditions for the leaching process, the samples can have hydrothermal stability and activity similar to that of the conventional MCM-41, where the template has been removed by calcination. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：107 / 113

页数：7

共 27 条

[1]

[Anonymous], 1995, The World health report : 1995 : bridging the gaps / report of the Director-General

[2]

[Anonymous], 33082000 ISO

[3] Thermogravimetric investigations during the synthesis of silica-based MCM-41 [J].

Araujo, SA ;

Ionashiro, M ;

Fernandes, VJ ;

Araujo, AS .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2001, 64 (02) :801-805

[4] Rapid calcination of high quality mesostructured MCM-41, MSU-X, and SBA-15 silicate materials: A step towards continuous processing? [J].

Bagshaw, Stephen A. ;

Bruce, Ian J. .

MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 109 (1-3) :199-209

[5] THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].

BARRETT, EP ;

JOYNER, LG ;

HALENDA, PP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380

[6]

BETTCHER D, 2001, WHO WHO TOBACCO FREE

[7]

BOZHI T, 2002, CHEM COMMUN, V11, P1186

[8] A comparison of post-synthesis alumination and sol-gel synthesis of MCM-41 with high framework aluminum content [J].

Chen, LY ;

Ping, Z ;

Chuah, GK ;

Jaenicke, S ;

Simon, G .

MICROPOROUS AND MESOPOROUS MATERIALS, 1999, 27 (2-3) :231-242

[9] Room temperature synthesis of Si-MCM-41 using polymeric version of ethyl silicate as a source of silica [J].

Gaydhankar, T. R. ;

Samuel, V. ;

Jha, R. K. ;

Kumar, R. ;

Joshi, P. N. .

MATERIALS RESEARCH BULLETIN, 2007, 42 (08) :1473-1484

[10] Influence of the extraction methods to remove organic templates from Al-MCM-41 molecular sieves [J].

Gomes, WA ;

Cardoso, LAM ;

Gonzaga, ARE ;

Aguiar, LG ;

Andrade, HMC .

MATERIALS CHEMISTRY AND PHYSICS, 2005, 93 (01) :133-137

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