Nanometric bimetallic sulfides prepared via thermal decomposition of Ni and Fe heteropolymolybdate emulsions |
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| Authors: | Emir E Escalona Pedro R Pereira-Almao Jimmy Castillo Jeannette Hung Carmelo Bolívar Carlos E Scott |
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| Affiliation: | (1) Centro de Catálisis, Petróleo y Petroquímica, Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Apartado, 47102 Los Chaguaramos, Caracas, Venezuela;(2) Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Canada;(3) Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela;(4) Centro de Física, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela |
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| Abstract: | NiMo and FeMo nanometric particles were prepared by thermal decomposition of water in oil emulsions, where the aqueous phase
was a solution of iron or nickel heteropolymolybdates. Decomposition experiments were carried out at 573 K and 70 Bar of hydrogen,
with carbon disulfide added to the emulsions. Solids were characterized by X ray diffraction, confocal microscopy and BET
surface area. Thiophene hydrodesulfurization was performed in a continuous flow microreactor at 553 K and 1.0 Bar. Particles
with diameters between 370 and 560 nm were obtained, and thiophene HDS was in the order NiMoS > MoS ≈ FeMoS > NiS > FeS. The
feasibility of using thermal decomposition of emulsions to obtain nanometric bimetallic sulfides particles was shown. |
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| Keywords: | nanometric sulfides HDS thiophene NiMoS FeMoS |
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