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

C. Ferreira; A. Araujo; V. Calvino-Casilda; M. G. Cutrufello; E. Rombi; A. M. Fonseca; M. A. Bañares; I. C. Neves

doi:10.1016/j.micromeso.2018.06.010

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

C. Ferreira, A. Araujo, V. Calvino-Casilda, M. G. Cutrufello, E. Rombi, A. M. Fonseca, M. A. Bañares, I. C. Neves

Chemical And Process Engineering

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	243-251
Number of pages	9
Journal	Microporous and Mesoporous Materials
Volume	271
Early online date	6 Jun 2018
DOIs	https://doi.org/10.1016/j.micromeso.2018.06.010
Publication status	Published - 15 Nov 2018

Keywords

faujasite zeolite
Nb(V) oxide
impregnation method
hydrophobicity
glycerol acetalization

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10.1016/j.micromeso.2018.06.010

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title = "Y zeolite-supported niobium pentoxide catalysts for the glycerol acetalization reaction",

abstract = "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.",

keywords = "faujasite zeolite, Nb(V) oxide, impregnation method, hydrophobicity, glycerol acetalization",

author = "C. Ferreira and A. Araujo and V. Calvino-Casilda and Cutrufello, {M. G.} and E. Rombi and Fonseca, {A. M.} and Ba{\~n}ares, {M. A.} and Neves, {I. C.}",

year = "2018",

month = nov,

day = "15",

doi = "10.1016/j.micromeso.2018.06.010",

language = "English",

volume = "271",

pages = "243--251",

journal = "Microporous and Mesoporous Materials",

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TY - JOUR

T1 - Y zeolite-supported niobium pentoxide catalysts for the glycerol acetalization reaction

AU - Ferreira, C.

AU - Araujo, A.

AU - Calvino-Casilda, V.

AU - Cutrufello, M. G.

AU - Rombi, E.

AU - Fonseca, A. M.

AU - Bañares, M. A.

AU - Neves, I. C.

PY - 2018/11/15

Y1 - 2018/11/15

N2 - 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.

AB - 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.

KW - faujasite zeolite

KW - Nb(V) oxide

KW - impregnation method

KW - hydrophobicity

KW - glycerol acetalization

UR - https://www.sciencedirect.com/journal/microporous-and-mesoporous-materials

U2 - 10.1016/j.micromeso.2018.06.010

DO - 10.1016/j.micromeso.2018.06.010

M3 - Article

SN - 1387-1811

VL - 271

SP - 243

EP - 251

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

ER -

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

Abstract

Keywords

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