A FT-IR study of the adsorption of indole, carbazole, benzothiophene, dibenzothiophene and 4,6-dibenzothiophene over solid adsorbents and catalysts

被引：90

作者：

Larrybia, MA

Gutièrrez-Alejandre, A

Ramìrez, J

Busca, G

机构：

[1] Univ Genoa, Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy

[2] Univ Nacl Autonoma Mexico, UNICAT, Dept Ingn Quim, Fac Quim, Mexico City 04510, DF, Mexico

[3] Univ Malaga, Dept Ingn Quim, E-29071 Malaga, Spain

来源：

APPLIED CATALYSIS A-GENERAL | 2002年 / 224卷 / 1-2期

关键词：

FT-IR; indole; benzothiophene; dibenzothiophene; 4,6-dibenzothiophene; alumina; magnesia; zirconia; carbazole;

D O I：

10.1016/S0926-860X(01)00769-4

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 adsorption of benzothiophene (BT), dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (DMDBT), dibenzofuran (DBF). indole (IND) and carbazole (CARB) on alumina, zirconia and magnesia has been studied by IR spectroscopy. The main adsorption process is due to adsorption on Lewis sites or on acid-base pairs. On alumina the adsorption is strongest, desorption being not obtained above 723 K. BT also undergoes a transformation with likely the heteroaromatic ring opening. Adsorption of 4,6-DBT is definitely limited in extent likely due to steric hindrance. The N-containing compounds IND and CARB are adsorbed dissociatively with breaking of the NH bond. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：167 / 178

页数：12

共 15 条

[1] Alkyldibenzothiophenes hydrodesulfurization-promoter effect, reactivity, and reaction mechanism [J].