Behavior of steam reforming reaction for bio-ethanol over Pt/ZrO2 catalysts

被引：51

作者：

Yamazaki, Tatsuya ^{[1
]}

Kikuchi, Naoko ^{[1
]}

Katoh, Masahiro ^{[2
]}

Hirose, Toyoko ^{[1
]}

Saito, Hiroaki ^{[3
]}

Yoshikawa, Takushi ^{[4
]}

Wada, Mamoru ^{[4
]}

机构：

[1] Ishinomaki Senshu Univ, Fac Sci & Engn, Dept Basic Sci, Ishinomaki, Miyagi 9868580, Japan

[2] Univ Tokushima, Inst Sci & Technol, Dept Adv Mat, Tokushima 7708506, Japan

[3] Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[4] Sanwa Cornstarch Co Ltd, Nara 6348585, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2010年 / 99卷 / 1-2期

关键词：

Bio-ethanol; Ethanol steam reforming; Platinum catalyst; Hydrogen formation; Deactivation; HYDROGEN-PRODUCTION; LOW-TEMPERATURE; BIOETHANOL; OXIDE; BIOMASS; OIL; NI; CO;

D O I：

10.1016/j.apcatb.2010.06.003

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：

Steam reforming reactions of reagent ethanol and of biomass-derived ethanol (bio-ethanol) over Pt catalysts supported on ZrO2 were studied. For steam reforming reactions at 673 K of reagent ethanol with an H2O/C2H5OH molar ratio = 3, the initial H-2 yields were 20-29%. The major carbon-containing products were CH4, CO2, and CO. Small amounts of acetaldehyde, acetone, and ethylene were produced, showing that the partial ethanol steam reforming reaction (C2H5OH + H2O -> CH4 + CO2 + 2H(2)) occurred competitively with the ethanol decomposition reaction (C2H5OH -> CH4 + CO+ H-2). H-2 formation for bio-ethanol was less than that obtained with reagent ethanol under the same conditions. The catalytic activity for the partial steam reforming reaction decreased rapidly; a similar decrease in the activity of the ethanol decomposition reaction was observed. The poisoning effect of sulfur compounds on the Pt sites was responsible for the deactivation of the bio-ethanol steam reforming reaction. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：81 / 88

页数：8

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