Synthesis and Characterization of Aluminophosphates Type-5 and 36 Doubly Modified with Si and Zn and Its Catalytic Application in the Reaction of Methanol to Hydrocarbons (MTH)
Por:
Garcia Ruiz, Misael, Solis Casados, Dora A., Aguilar Pliego, Julia, Marquez Alvarez, Carlos, Sastre de Andres, Enrique, Sanjurjo Tartalo, Diana, Sanchez-Sanchez, Manuel, Grande Casas, Marisol
Publicada:
1 ago 2020
Resumen:
This paper presents a study of the synthesis of AlPO4-5 and AlPO4-36
materials doubly substituted by Si and Zn, as acid function and
aromatizing function, respectively. The physicochemical properties of
the zeotypes were studied by XRD, adsorption of N-2, Temperature
Programmed Desorption with NH3, P-31 MAS NMR and SEM. The incorporation
of Zn and Si has shown an important effect on the acidic, textural and
morphological properties of the samples. The particle size has a
significant effect on the catalytic activity in the reaction of methanol
to hydrocarbons in terms of methanol conversion and selectivity. It was
observed that as the particle size decreases, the methanol conversion
increases causing the catalyst to deactivate in a shorter time. The
incorporation of Zn improved the selectivity to total aromatics by the
aromatizing effect of Zn. The SAPO-5 (S5) material having a smaller
particle size showed complete conversions of methanol. In contrast, the
ZnAPO-5 (Z5) material showed low conversions but a high selectivity to
total aromatics (41%). On the other hand, the material S36-2 presented
a high selectivity to aromatics (58%) due to the high amount of Zn and
Si. Both metals provided a certain acidic character to the materials.
Filiaciones:
Garcia Ruiz, Misael:
Univ Autonoma Estado Mexico, Fac Quim, Paseo Colon Esquina Paseo Tollocan S-N, Toluca 50000, Estado De Mexic, Mexico
Solis Casados, Dora A.:
Univ Autonoma Estado Mexico, Ctr Conjunto Invest Quim Sustentable UAEM UNAM, Personal Acad Adscrito, Fac Quim UAEMex, Toluca De Lerdo, Mexico
Aguilar Pliego, Julia:
UAM A, Area Quim Aplicada, Dept Ciencias Basicas, San Pablo 180, Mexico City 02200, DF, Mexico
Marquez Alvarez, Carlos:
CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, E-28049 Madrid, Spain
Sastre de Andres, Enrique:
CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, E-28049 Madrid, Spain
Sanjurjo Tartalo, Diana:
CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, E-28049 Madrid, Spain
Sanchez-Sanchez, Manuel:
CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, E-28049 Madrid, Spain
Grande Casas, Marisol:
CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2,Campus Cantoblanco, E-28049 Madrid, Spain
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