Study of LPG steam reform using Ni/Mg/Al hydrotalcite-type precursors

被引：17
作者：
Ferreira, R. A. R. [1 ]
Auila-Neto, C. N. [1 ]
Noronha, F. B. [2 ]
Hori, C. E. [1 ]
机构：
[1] Univ Fed Uberlandia, Sch Chem Engn, Av Joao Naves de Avila 2121,Bloco 1K, BR-38408144 Uberlandia, MG, Brazil
[2] Natl Inst Technol, Div Catalysis & Chem Proc, Av Venezuela 82, BR-20081312 Rio De Janeiro, RJ, Brazil
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 45期
关键词：
Liquefied petroleum gas; In situ XRD; Hydrotalcite; Nickel; In situ XAS; LAYERED DOUBLE HYDROXIDES; LIQUEFIED PETROLEUM GAS; HYDROGEN-PRODUCTION; PARTIAL OXIDATION; PERFORMANCE-CHARACTERISTICS; CATALYST PRECURSORS; NI; METHANE; REACTIVITY; EXAFS;
D O I：
10.1016/j.ijhydene.2019.07.193
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：
Liquefied petroleum gas (LPG) is a mixture of hydrocarbons that has a broad distribution network in several countries. In this context, the objective of this study was to evaluate the steam reforming of LPG using catalysts derived from hydrotalcites. The precursors were characterized by X-ray fluorescence analysis, BET surface area, temperature programmed reduction, thermogravimetric analysis, in situ X-ray diffraction spectroscopy and X-ray absorption spectroscopy. Catalysts were synthesized with 47.5% Ni content without increasing the particle diameter. All catalysts showed the formation of the same gas phase products: H-2, CO, CH4 and CO2. Ni1.64Mg1.36Al catalyst showed the highest conversion (about 70%) and lower deactivation by coke deposition after 24 h reaction. The use of higher reaction temperatures (1073 and 1173 K), for steam reforming process, resulted in higher conversions of LPG, increased formation of H-2 and lowered the formation of carbon deposits. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：24471 / 24484
页数：14
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