Adsorption of thiophenes out of hydrocarbons using metal impregnated nanocrystalline aluminum oxide

被引：109

作者：

Jeevanandam, P ^{[1
]}

Klabunde, KJ ^{[1
]}

Tetzler, SH ^{[1
]}

机构：

[1] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2005年 / 79卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

adsorption; desulfurization; thiophene; nanocrystalline aluminum oxide; silver; silver carbonate;

D O I：

10.1016/j.micromeso.2004.10.029

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Adsorption of thiophene and its derivatives was carried out using silver impregnated nanocrystalline metal oxides, with special emphasis on aluminum oxide. A modified nanocrystalline aluminum oxide was prepared by an impregnation method and characterized. The adsorption experiments were carried out for thiophene, benzothiophene, dibenzothiophene and 4,6-dimethyl dibenzothiophene. Incorporation of soft Lewis acid sites such as silver ion is necessary for the adsorption of thiophene related molecules. The modified adsorbent was found to retain its adsorption characteristics even after compaction and it can be used for adsorption again after regeneration by heating at modest temperatures. The adsorption properties of the silver impregnated aluminum oxide (prepared by aerogel procedure) (Ag-AP-Al2O3) were compared with several other high surface area materials (> 200 m(2)/g). Detailed characterization studies showed that the active site in Ag-AP-Al2O3 is the Ag+ ion coordinated to carbonate. Metallic silver nanoparticles do not appear to be effective in thiophene adsorption. (c) 2004 Elsevier Inc. All rights reserved.

引用

页码：101 / 110

页数：10

共 58 条

[1]

[Anonymous], 1989, US Patent, Patent No. [US4853202 A, 4853202]

[2]

[Anonymous], [No title captured], Patent No. 5730860

[3]

[Anonymous], [No title captured]

[4] ELECTRON PARAMAGNETIC RESONANCE AND X-RAY STUDIES IN DOPED SILVER CARBONATE [J].

ASHFORD, NA ;

SNELSON, A .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (02) :532-&

[5] Science and technology of novel processes for deep desulfurization of oil refinery streams: A review [J].

Babich, IV ;

Moulijn, JA .

FUEL, 2003, 82 (06) :607-631

[6] Role of the support nature in chemisorption of Ni(acac)(2) on the surface of silica and alumina [J].

Babich, IV ;

Plyuto, YV ;

VanLangeveld, AD ;

Moulijn, JA .

APPLIED SURFACE SCIENCE, 1997, 115 (03) :267-272

[7]

BAKR A, 1994, IND ENG CHEM RES, V33, P336

[8] Deep desulfurization of diesel fuel by extraction with ionic liquids [J].

Bösmann, A ;

Datsevich, L ;

Jess, A ;

Lauter, A ;

Schmitz, C ;

Wasserscheid, P .

CHEMICAL COMMUNICATIONS, 2001, (23) :2494-2495

[9] Synthesis, isolation, and chemical reactivity studies of nanocrystalline zinc oxide [J].

Carnes, CL ;

Klabunde, KJ .

LANGMUIR, 2000, 16 (08) :3764-3772

[10]

COLLINS FM, 1997, J MOL CATAL A-CHEM, V117, P1381

← 1 2 3 4 5 6 →