Y zeolite-supported niobium pentoxide catalysts for the glycerol acetalization reaction

被引：33

作者：

Ferreira, C. ^{[1
,2
]}

Araujo, A. ^{[1
,3
]}

Calvino-Casilda, V. ^{[5
]}

Cutrufello, M. G. ^{[3
]}

Rombi, E. ^{[3
]}

Fonseca, A. M. ^{[1
,4
]}

Banares, M. A. ^{[2
]}

Neves, I. C. ^{[1
,4
]}

机构：

[1] Univ Minho, Dept Chem, Ctr Chem, Gualtar Campus, P-4710057 Braga, Portugal

[2] CSIC, Inst Catalisis & Petroleoquim, Spect & Ind Catalysis SpeICat, Marie Curie 2, E-28049 Madrid, Spain

[3] Univ Cagliari, Dipartimento Sci Chim & Geol, Complesso Univ Monserrato,SS 554 Bivio Sestu, I-09042 Monserrato, Italy

[4] Univ Minho, CEB Ctr Biol Engn, P-4710057 Braga, Portugal

[5] UNED, ETS Ingenieros Ind, Dept Ingn Elect Elect Control Automat & Quim Apli, Juan del Rosal 12, E-28040 Madrid, Spain

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2018年 / 271卷

关键词：

Faujasite zeolite; Nb(V) oxide; Impregnation method; Hydrophobicity; Glycerol acetalization; MESOPOROUS CELLULAR FOAMS; SOLID ACID CATALYSTS; OXIDE CATALYSTS; SOLKETAL; ACETONE; DEHYDRATION; WATER; CONVERSION; ACROLEIN; SITES;

D O I：

10.1016/j.micromeso.2018.06.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Faujasite zeolite-supported niobium-based catalysts (with Nb2O5 amounts of 5 and 15 wt%) were prepared by impregnation of NaY, HY, and HUSY zeolites using a niobum(V) ammonium oxalate complex. These obtained Nb-containing catalysts were calcined and thoroughly characterized by different physico-chemical techniques. The characterization results revealed that niobium oxide was successfully loaded on the surface of the zeolite supports without any significant modification of the faujasite structure. Surface area and pore volume were found to decrease with the increase in the Nb content for all the prepared catalysts. The presence of Nb was proved to increase the hydrophobicity of the zeolites and to affect surface acidity. The catalytic activity of the Nb-containing samples was evaluated in the glycerol acetalization reaction, and the Nb-HUSY catalysts were found to show the best catalytic performance.

引用

页码：243 / 251

页数：9

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