Strong rhodium-niobia interaction in Rh/Nb2O5, Nb2O5-Rh/SiO2 and RhNbO4/SiO2 catalysts -: Application to selective CO oxidation and CO hydrogenation

被引：60

作者：

Ito, S ^{[1
]}

Fujimori, T ^{[1
]}

Nagashima, K ^{[1
]}

Yuzaki, K ^{[1
]}

Kunimori, K ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

CATALYSIS TODAY | 2000年 / 57卷 / 3-4期

关键词：

Rh-niobia interaction; SMSI; SMOI; CO oxidation; CO hydrogenation;

D O I：

10.1016/S0920-5861(99)00333-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The extent of Rh-niobia interaction in niobia-supported Rh (Rh/Nb2O5), niobia-promoted Rh/SiO2 (Nb2O5-Rh/SiO2) and RhNbO4/SiO2 catalyst after H-2 reduction has been investigated by H-2 and CO chemisorption measurements. These catalysts have been applied to selective CO oxidation in Hz (CO+H-2+O-2) and CO hydrogenation (CO+H-2), and the results are compared with those of unpromoted Rh/SiO2 catalysts. It has been found that niobia (NbOx) increases the activity and selectivity for both the reactions. (C)2000 Elsevier Science B.V. All rights reserved.

引用

页码：247 / 254

页数：8

共 32 条

[1] Characterization and dehydrogenation activity of Pt/Nb2O5 catalysts [J].

Aranda, DAG ;

Ramos, ALD ;

Passos, FB ;

Schmal, M .

CATALYSIS TODAY, 1996, 28 (1-2) :119-125

[2] Strong metal-promoter oxide interactions induced by calcination in V, Nb, and Ta oxide promoted Rh/SiO2 catalysts [J].

Beutel, T ;

Siborov, V ;

Tesche, B ;

Knozinger, H .

JOURNAL OF CATALYSIS, 1997, 167 (02) :379-390

[3] FTIR spectroscopic study and CO hydrogenation on V, Nb, and Ta oxide promoted Rh/SiO2 catalysts [J].

Beutel, T ;

Alekseev, OS ;

Ryndin, YA ;

Likholobov, VA ;

Knozinger, H .

JOURNAL OF CATALYSIS, 1997, 169 (01) :132-142

[4] METAL SUPPORT INTERACTION - GROUP-VIII METALS AND REDUCIBLE OXIDES [J].

HALLER, GL ;

RESASCO, DE .

ADVANCES IN CATALYSIS, 1989, 36 :173-235

[5] STRUCTURAL TRANSFORMATION IN NB2O5-PROMOTED RH CATALYSTS DURING CALCINATION AND REDUCTION TREATMENTS [J].

HU, Z ;

NAKAMURA, H ;

KUNIMORI, K ;

YOKOYAMA, Y ;

ASANO, H ;

SOMA, M ;

UCHIJIMA, T .

JOURNAL OF CATALYSIS, 1989, 119 (01) :33-46

[6] ETHANE HYDROGENOLYSIS AND HYDROGEN CHEMISORPTION OVER NIOBIA-PROMOTED RHODIUM CATALYSTS - A NEW PHASE BY A STRONG RHODIUM NIOBIA INTERACTION [J].

HU, Z ;

NAKAMURA, H ;

KUNIMORI, K ;

ASANO, H ;

UCHIJIMA, T .

JOURNAL OF CATALYSIS, 1988, 112 (02) :478-488

[7] A COMPARISON OF NIOBIA-PROMOTED AND VANADIA-PROMOTED RH CATALYSTS - THE BEHAVIORS OF RHMO4 (M = NB, V) ON SIO2 DURING CALCINATION AND REDUCTION TREATMENTS [J].

HU, Z ;

WAKASUGI, T ;

MAEDA, A ;

KUNIMORI, K ;

UCHIJIMA, T .

JOURNAL OF CATALYSIS, 1991, 127 (01) :276-286

[8] STRONG RHODIUM-NIOBIA INTERACTION ON SILICA SURFACE FORMED BY HIGH-TEMPERATURE CALCINATION TREATMENT [J].

Hu, Z. ;

Nakamura, H. ;

Kunimori, K. ;

Uchijima, T. .

CATALYSIS LETTERS, 1988, 1 (8-9) :271-274

[9] Removal of carbon monoxide from hydrogen-rich fuels by selective oxidation over platinum catalyst supported on zeolite [J].

Igarashi, H ;

Uchida, H ;

Suzuki, M ;

Sasaki, Y ;

Watanabe, M .

APPLIED CATALYSIS A-GENERAL, 1997, 159 (1-2) :159-169

[10] HYDROGENATION OF CARBON-DIOXIDE AND CARBON-MONOXIDE OVER SUPPORTED RHODIUM CATALYSTS UNDER 10 BAR PRESSURE [J].

INOUE, T ;

IIZUKA, T ;

TANABE, K .

APPLIED CATALYSIS, 1989, 46 (01) :1-9

← 1 2 3 4 →