Kinetic studies of the partial oxidation of isooctane for hydrogen production over a nickel-alumina catalyst

被引：21

作者：

Ibrahim, Hussam H. ^{[1
]}

Idem, Raphael O. ^{[1
]}

机构：

[1] Univ Regina, Fac Engn, Proc Syst Engn Lab, Regina, SK S4S 0A2, Canada

来源：

CHEMICAL ENGINEERING SCIENCE | 2006年 / 61卷 / 17期

关键词：

isooctane; gasoline; partial oxidation; nickel-based catalyst; kinetics;

D O I：

10.1016/j.ces.2006.04.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The kinetics of the catalytic partial oxidation of isooctane for hydrogen (H-2) production over a stable Ni/gamma-Al2O3 catalyst was investigated at atmospheric pressure in the temperature range of 863-913 K, ratio of weight of catalyst to the molar feed rate of isooctane (W/F-iC8(o)) in the range of 7.09-30.89 kg mol(-1), and molar feed ratio O-2/i-C8H18 of 4.0 in a 12.7 mm diameter Inconel micro-reactor housed in an electrically controlled furnace. The developed rate models were based on the Langmuir-Hinshelwood-Hougen-Watson (LHHW) and Eley-Rideal (ER) formulations. Out of the 18 models developed, 10 were eliminated due to poor predictive efficiency. A LHHW mechanism requiring the dissociative adsorption of isooctane and molecular adsorption of oxygen on a single site was the most likely pathway for the partial oxidation of isooctane. The reaction order of 1.5 indicates a strong coverage of nickel by isooctane. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：5912 / 5918

页数：7

共 15 条

[1]

Ahmed S., 1999, FUEL CELLS B, V12, P4

[2]

Fogler H.S., 1999, ELEMENTS CHEM REACTI

[3]

Froment GF., 2010, CHEM REACTOR ANAL DE

[4]

Geankoplis C.J., 2003, TRANSPORT PROCESSES

[5]

Heck R. M., 2002, CATALYTIC AIR POLLUT

[6]

IBRAHIM HH, 2006, UNPUB APPL CATALYSIS

[7] Fuel processing for fuel cell systems in transportation and portable power applications [J].

Krumpelt, M ;

Krause, TR ;

Carter, JD ;

Kopasz, JP ;

Ahmed, S .

CATALYSIS TODAY, 2002, 77 (1-2) :3-16

[8]

Levenspiel O., 1979, CHEM REACTION ENG, V3rd

[9] Role of the surface state of Ni/Al2O3 in partial oxidation of CH4 [J].

Li, CY ;

Yu, CC ;

Shen, SK .

CATALYSIS LETTERS, 2000, 67 (2-4) :139-145

[10]

Moon DJ, 2004, APPL CATAL A-GEN, V272, P53, DOI 10.1016/j.apcata.2004.05.009

← 1 2 →