Fabrication and characterization of La-added MgFe2O4 as catalyst support for CO oxidation

被引：2

作者：

Doi, Akane ^{[1
]}

Obata, Kenji ^{[2
]}

Matsushima, Shigenori ^{[2
]}

Hojo, Hajime ^{[3
]}

Einaga, Hisahiro ^{[3
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Mol & Mat Sci, 6-1 Kasugakouenn, Kasuga, Fukuoka 8168580, Japan

[2] Kitakyushu Coll, Natl Inst Technol NIT, Dept Creat Engn, Kokuraminami Ku, 5-20-1 Shii, Kitakyushu, Fukuoka 8020985, Japan

[3] Kyushu Univ, Dept Mat Sci, Fac Engn Sci, Kasuga, Fukuoka 8168580, Japan

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 23期

关键词：

MgFe2O4; Catalyst support; Palladium; CO oxidation; PREFERENTIAL OXIDATION; CARBON-MONOXIDE; FE; NANOPARTICLES; REDUCTION; PERFORMANCE; MECHANISM; METHANOL; FERRITE; OXIDES;

D O I：

10.1016/j.ceramint.2021.08.175

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fe-containing oxides can serve as excellent supports for precious metal catalysts. Therefore, we investigated the catalytic properties of noble metals supported on Fe-containing mixed oxides. MgFe2O4 and La-added MgFe2O4 (La-MgFe2O4) were prepared via complexation with malic acid and characterized by X-ray diffraction, N-2 adsorption-desorption, and Fe K-edge X-ray fine structure analysis. MgFe2O4 calcined at 400-800 degrees C has a spinel structure and is porous. The addition of La to MgFe2O4 increased the local structural disorder around Fe, suppressed grain growth, affected the pore size, and increased the specific surface area. In addition, a Pd-loaded La-MgFe2O4 catalyst was prepared and found to exhibit higher activity for CO oxidation than a representative Pd/gamma-Al2O3 catalyst. Further, temperature-programmed reduction studies revealed that the reactivity of the surface lattice oxygen of La-MgFe2O4 was enhanced by the Pd loading. Further, diffuse reflectance Fourier transform infrared spectroscopy studies showed that the surface lattice oxygen reacted with CO to form CO2.

引用

页码：32786 / 32793

页数：8

共 37 条

[1] THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].

BARRETT, EP ;

JOYNER, LG ;

HALENDA, PP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380

[2] The impact of nanoscience on heterogeneous catalysis [J].

Bell, AT .

SCIENCE, 2003, 299 (5613) :1688-1691

[3] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[4] Micronization of MgFe2O4 particles doped with Si [J].

Doi, Akane ;

Nishibori, Maiko ;

Obata, Kenji ;

Suzuki, Takuya ;

Shimanoe, Kengo ;

Matsushima, Shigenori .

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2016, 124 (07) :777-780

[5] Preparation of magnesium ferrite by a malic acid complex [J].

Doi, Akane ;

Matsushima, Shigenori ;

Obata, Kenji ;

Maeda, Ryosuke ;

Kajima, Atsushi ;

Kobayashi, Kenkichiro .

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2014, 122 (1428) :645-648

[6] CO Oxidation Over TiO2-Supported Pt-Fe Catalysts Prepared by Coimpregnation Methods [J].

Einaga, Hisahiro ;

Urahama, Narihiro ;

Tou, Akihiro ;

Teraoka, Yasutake .

CATALYSIS LETTERS, 2014, 144 (10) :1653-1660

[7] The reduction of Mg-Fe-O and Mg-Fe-Al-O complex oxides studied by temperature-programmed reduction combined with in situ Mossbauer spectroscopy [J].

Ge, X ;

Li, MS ;

Shen, JY .

JOURNAL OF SOLID STATE CHEMISTRY, 2001, 161 (01) :38-44

[8] Aqueous-phase reforming of ethylene glycol over supported Pt and Pd bimetallic catalysts [J].

Huber, GW ;

Shabaker, JW ;

Evans, ST ;

Dumesic, JA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 62 (3-4) :226-235

[9] Highly active and durable Pd/Fe2O3 catalysts for wet CO oxidation under ambient conditions [J].

Ivanova, A. S. ;

Slavinskaya, E. M. ;

Stonkus, O. A. ;

Gulyaev, R. V. ;

Glazneva, T. S. ;

Noskova, A. S. ;

Boronin, A. I. .

CATALYSIS SCIENCE & TECHNOLOGY, 2016, 6 (11) :3918-3928

[10] Small gold particles supported on MgFe2O4 nanocrystals as novel catalyst for CO oxidation [J].

Jia, Chun-Jiang ;

Liu, Yong ;

Schwickardi, Manfred ;

Weidenthaler, Claudia ;

Spliethoff, Bernd ;

Schmidt, Wolfgang ;

Schueth, Ferdi .

APPLIED CATALYSIS A-GENERAL, 2010, 386 (1-2) :94-100

← 1 2 3 4 →