Study of supported bimetallic MoRe carbides catalysts for conversion

被引：17
作者：
Blanco, Elodie [1 ,2 ]
Diaz de Leon, J. Noe [3 ]
Luis Garcia-Fierro, Jose [4 ]
Escalona, Nestor [1 ,2 ,5 ,6 ]
机构：
[1] Pontificia Univ Catolica Chile, Dept Ingn Quim & Bioproc, Ave Vicuna Mackenna 4860, Santiago, Chile
[2] Millenium Nuclei Catalyt Proc Sustainable Chem CS, Santiago, Chile
[3] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Mexico City, DF, Mexico
[4] CSIC, Inst Catalisis & Petroleoquim, Madrid 28049, Spain
[5] Pontificia Univ Catolica Chile, Fac Quim & Farm, Dept Quim Fis, Santiago, Chile
[6] Univ Concepcion, Unidad Desarrollo Tecnol, Coronel, Chile
来源：
CATALYSIS TODAY | 2021年 / 367卷
关键词：
Rhenium carbide; Molybdenum carbide; Bimetallic; HDO; Bio-oil upgrading; TRANSITION-METAL CARBIDES; MOLYBDENUM CARBIDE; HYDRODEOXYGENATION HDO; TUNGSTEN CARBIDES; CARBON NANOFIBER; MODEL COMPOUNDS; REOX CATALYSTS; OXYGEN-CONTENT; GUAIACOL; BIOMASS;
D O I：
10.1016/j.cattod.2020.03.031
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A serie of supported bimetallic MoRe carbides were prepared with different Mo/Re molar ratio by using a mixture H-2+ C2H4 at 700 degrees C and compared to the respective monometallic carbides in the guaiacol conversion at 350 degrees C, 5.0 MPa. Catalysts were characterized by N-2-physisorption, CO-chemisorption, temperature programmed reduction/desorption of NH3 (TPR and TPD-NH3 respectively) and XPS. The results have shown an enrichment of Re at the surface occur suggesting that Re carbide recovered Mo carbide particles and, thus improving Re dispersion. This was traduced by an enhancement of the initial rate of conversion of the bimetallic catalyst. A synergistic effect between Mo and Re carbide was reported from XPS results and led to the activation of the demethylation of guaiacol to catechol.
引用
收藏
页码：290 / 296
页数：7
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