Ni/ZrO2 catalysts in ethanol steam reforming: Inhibition of coke formation by CaO-doping

被引：111

作者：

Nichele, Valentina ^{[1
]}

Signoretto, Michela ^{[1
]}

Pinna, Francesco ^{[1
]}

Menegazzo, Federica ^{[1
]}

Rossetti, Ilenia ^{[2
]}

Cruciani, Giuseppe ^{[3
]}

Cerrato, Giuseppina ^{[4
,5
]}

Di Michele, Alessandro ^{[6
]}

机构：

[1] Ca Foscari Univ, Mol Sci & Nanosyst Dept, INSTM Unit, I-30123 Venice, Italy

[2] Univ Milan, Dept Chem, ISTM CNR, INSTM Unit, I-20133 Milan, Italy

[3] Univ Ferrara, Dept Earth Sci, I-44100 Ferrara, Italy

[4] Univ Turin, Dept Chem, INSTM Unit, I-10125 Turin, Italy

[5] Univ Turin, NIS Ctr Excellence, INSTM Unit, I-10125 Turin, Italy

[6] Univ Perugia, Dept Phys, I-06123 Perugia, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 150卷

关键词：

Nickel; Zirconia; Ethanol steam reforming; CaO-doping; Coking inhibition; NI CRYSTAL SIZE; HYDROGEN-PRODUCTION; PARTIAL OXIDATION; ZRO2; SUPPORT; METHANE; ZIRCONIA; SURFACE; CH4; ADSORPTION; MORPHOLOGY;

D O I：

10.1016/j.apcatb.2013.11.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work the performance of CaO-doped Ni/ZrO2 catalysts in ethanol steam reforming was studied. The addition of CaO did not affect the morphology or the crystalline structure of the support. On the contrary, Ni reducibility markedly increased. Moreover, the Lewis acidity of zirconia gradually decreased as the CaO content increased, thus inhibiting coke deposition and improving the carbon balance. The addition of a basic oxide helps to prevent some of the side reactions responsible for coke formation and deposition, that can gradually deactivate the catalyst. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：12 / 20

页数：9

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