Obtaining of value added chemicals from catalityc dehydration of glycerol
Por:
Santiago Vazquez, Eduardo, Aguilar Pliego, Julia, Perez Pariente, Joaquin, Sanchez Sanchez, Manuel, Arteaga Licona, Angel R., Garcia Ruiz, Misael, Solis-Casados, Dora
Publicada:
1 oct 2020
Resumen:
Five catalysts were synthesized by changing the molar proportions (15,
30, 50, 70, 85 %) of ceria/alumina by the sol-gel method with nonionic
surfactant (Tergitol 15-S-9), after they were impregnated with 1%
weight Pt for evaluation in the dehydration of glycerol, modifying the
W/F ratio (9.09, 13.63 and 18.18 gcat*h/mol). Through X-ray powder
diffraction and also by X-ray photoelectron spectroscopy, the presence
of ceria in the structure of alumina was identified. As the amount of
cerium oxide increase, the BET surface area and the strength of the acid
sites (TPD-NH3) increased as well, in turn, the pore size (mesoporous)
remained constant. The catalytic tests were carried out in the gas phase
in a continuous-flow fixed-bed reactor, within which the ceria showed a
positive effect on the performance of the samples, improving the levels
of conversion and selectivity towards acetol, probably due to the
contribution of acid and redox sites of ceria. On the other hand, as the
molar ratio of ceria decreased, the selectivity toward acrolein
increased, possibly resulting in the presence of Brnsted sites.
Filiaciones:
Santiago Vazquez, Eduardo:
UAM A, Dept Ciencias Basicas, Area Quim Aplicada, San Pablo 180, Cd De Mexico 02200, Mexico
Aguilar Pliego, Julia:
UAM A, Dept Ciencias Basicas, Area Quim Aplicada, San Pablo 180, Cd De Mexico 02200, Mexico
Perez Pariente, Joaquin:
CSIC, Inst Catcilisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, Madrid 28049, Spain
Sanchez Sanchez, Manuel:
CSIC, Inst Catcilisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, Madrid 28049, Spain
Arteaga Licona, Angel R.:
UAM A, Dept Ciencias Basicas, Area Quim Aplicada, San Pablo 180, Cd De Mexico 02200, Mexico
Garcia Ruiz, Misael:
Univ Autonoma Estado Mexico, Fac Quim, Paseo Colon Esquina Paseo Tollocan S-N, Toluca Estado De Mexico 50000, Mexico
Solis-Casados, Dora:
UAEM UNAM, Personal Acad Adscrito Ctr Conjunto Invest Quim S, Toluca, Mexico
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