Modifying the reactivity of a solid Lewis acid: niobium and antimony doped nanoscopic aluminum fluoride

被引：14

作者：

Marshall, C. P. ^{[1
,2
]}

Braun, T. ^{[1
]}

Kemnitz, E. ^{[1
]}

机构：

[1] Humboldt Univ, Dept Chem, Brook Taylor Str 2, D-12489 Berlin, Germany

[2] Humboldt Univ, Sch Analyt Sci Adlershof SALSA, Unter Linden 6, D-10099 Berlin, Germany

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2018年 / 8卷 / 12期

关键词：

METAL FLUORIDES; STATE NMR; FLUORINATED ALUMINAS; OXIDATION; CATALYSTS; CITRONELLAL; DEHYDRATION; CYCLOHEXENE; DIFFRACTION; CYCLIZATION;

D O I：

10.1039/c8cy00502h

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：

A series of acid catalysts were prepared, using niobium and antimony as dopants in the fluorolytic sol-gel synthesis of high surface aluminium fluoride. These new catalysts exhibit remarkable reactivity: they are able to isomerize compounds containing carbon-halogen bonds at room temperature by C-F, C-Cl and C-Br activation and perform the isomerization of double bonds and Friedel-Crafts-like reactions that are required for the cyclization of citronellal, for which the conversions increase by doping with Nb up to 99%. Furthermore, the characterization of the catalysts by means of MAS NMR, NH3-TPD, py-PAS and N-2 adsorption is presented.

引用

页码：3151 / 3159

页数：9