Ni-loaded nanocrystalline ceria-zirconia solid solutions prepared via modified Pechini route as stable to coking catalysts of CH4 dry reforming

被引：24

作者：

Sadykov, Vladislav A. ^{[1
,2
]}

Simonov, Mikhail N. ^{[1
,2
]}

Mezentseva, Natalia V. ^{[1
,2
]}

Pavlova, Svetlana N. ^{[1
]}

Fedorova, Yulia E. ^{[1
]}

Bobin, Aleksei S. ^{[1
,2
]}

Bespalko, Yulia N. ^{[1
]}

Ishchenko, Arcady V. ^{[1
,2
]}

Krieger, Tamara A. ^{[1
,2
]}

Glazneva, Tatiana S. ^{[1
,2
]}

Larina, Tatyana V. ^{[1
,2
]}

Cherepanova, Svetlana V. ^{[1
]}

Kaichev, Vasilii V. ^{[1
]}

Saraev, Andrey A. ^{[1
]}

Chesalov, Yurii A. ^{[1
]}

Shmakov, Aleksandr N. ^{[1
,2
]}

Roger, Anne-Cecile ^{[3
]}

Adamski, Andrzej ^{[4
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Univ Strasbourg, F-67087 Strasbourg, France

[4] Jagiellonian Univ, Krakow, Poland

来源：

OPEN CHEMISTRY | 2016年 / 14卷 / 01期

关键词：

methane dry reforming; Ce-Zr-O oxide; Ni stabilization; coking stability; OXYGEN STORAGE CAPACITY; X-RAY PHOTOELECTRON; CEO2-ZRO2 MIXED OXIDES; PHOTOEMISSION-SPECTROSCOPY; METHANE; NICKEL; REDUCTION; ESCA; NANOPARTICLES; TRANSITION;

D O I：

10.1515/chem-2016-0039

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mixed nanocrystalline Ce-Zr-O oxides (Ce/Zr = 1 or 7/3) were prepared by modified Pechini route using ethylene glycol solutions of metal salts. Detailed characterization of their real structure and surface properties by X-ray diffraction on synchrotron radiation with the full-profile Rietveld analysis, high resolution electron microscopy with elemental analysis, Raman spectroscopy, UV-Vis and X-ray photoelectron spectroscopy revealed a high homogeneity of cations distribution in nanodomains resulting in stabilization of disordered cubic phase. This provides a high dispersion of NiO loaded on these mixed oxides by wet impregnation, a high reactivity and mobility of oxygen in these catalysts and strong interaction of Ni with support in the reduced state. This helps to achieve a high activity and coking stability of developed catalysts in CH4 dry reforming in feeds with CH4 concentration up to 15% and CH4/CO2 ratio = 1.

引用

页码：363 / 376

页数：14

共 16 条

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