Hydrodeoxygenation of m-cresol over nickel and nickel phosphide based catalysts. Influence of the nature of the active phase and the support

被引：69
作者：
Goncalves, Vinicius O. O. [1 ]
de Souza, Priscilla M. [2 ]
Cabioc'h, Thierry [3 ]
Noronha, Fabio B. [2 ,4 ,5 ]
Richard, Frederic [1 ]
机构：
[1] Univ Poitiers, Inst Chim Milieux & Mat Poitiers, CNRS, UMR 7285, 4 Rue Michel Brunet,BP633, F-86022 Poitiers, France
[2] Univ Fed Rio de Janeiro, Chem Engn Program COPPE, Caixa Postal 68502, BR-21941972 Rio De Janeiro, RJ, Brazil
[3] Univ Poitiers, Inst Pprime, CNRS, UPR 3346,ISAE,ENSMA, BP 30179, F-86962 Futuroscope, France
[4] Natl Inst Technol, Catalysis Div, Av Venezuela 82, BR-20081312 Rio De Janeiro, Brazil
[5] Mil Inst Engn, Chem Engn Dept, Praca Gal Tiburcio 80, BR-22290270 Rio De Janeiro, Brazil
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 219卷
关键词：
m-cresol; Nickel catalyst; HDO; Nickel phosphide catalyst; Effect of support; MODEL-COMPOUND; FAST PYROLYSIS; BIO-OIL; ATMOSPHERIC HYDRODEOXYGENATION; METHYL LAURATE; OXYGEN-REMOVAL; PHENOL; GUAIACOL; DEOXYGENATION; HYDROCARBONS;
D O I：
10.1016/j.apcatb.2017.07.042
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：
The present work studied the effect of two supports (SiO2 and tetragonal ZrO2) on the performance of metallic nickel and nickel phosphide catalysts for the hydrodeoxygenation (HDO) of m-cresol carried out at 340 degrees C under 4 MPa. All catalysts were characterized using several techniques (ICP, N-2 adsorption-desorption, XRD, H-2-TPR, NH3-TPD). The active phases (Ni(0) and Ni2P) were successively prepared at 450 degrees C under 4 MPa of H-2, as observed by XRD. The activity and deoxygenation properties depended on the active phase (Ni vs Ni2P) and the support (SiO2 vs ZrO2). The order of HDO activity (mmol g(-1) h(-1)) followed: Ni2P/ZrO2 (47.0)> Ni2P/SiO2 (28.3) >> Ni/ZrO2 (3.0)> Ni/SiO2 (1.1). The Ni2P phase was clearly much more active than metallic Ni. In addition, the use of zirconia as support enhanced the deoxygenation properties compared to silica, which can be attributed to the presence of oxophilic sites (Zr3+/Zr4+) favoring the adsorption of m-cresol. (C) 2017 Elsevier B.V. All rights reserved.
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页码：619 / 628
页数：10
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