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http://hdl.handle.net/1843/62085| Type: | Artigo de Periódico |
| Title: | Synthesis of NiMoO4 ceramics by proteic sol-gel method and investigation of their catalytic properties in hydrogen production |
| Authors: | Maíra Vieira da Silva Humberto Vieira Fajardo Thenner Silva Rodrigues Felipe Anchieta e Silva Vanderlei Sérgio Bergamaschi Anderson Dias Kisla Prislen Félix Siqueira |
| Abstract: | A proteic sol-gel route was used in the production of NiMoO4 catalysts, which used edible gelatin as a precursor. The triple helix structure of a protein in contact with identical structures acquires an unfolded form, which favors the interaction of the reactive groups of the gelatin (NH3+ and COO−) with the metallic ions (MoO42− and Ni2+). The synthesized catalysts were thoroughly characterized using techniques such as X-ray diffraction, thermogravimetric and differential thermal analysis, Raman scattering, scanning and transmission electron microscopies, UV–Vis spectroscopy, and colorimetry. The results showed that it is possible to prepare the phase-pure α-NiMoO4 polymorph only at temperatures above 700 °C, while a mixture of the polymorphs α and β were obtained at lower temperatures. The synthesized materials calcined at 300, 500, and 700 °C have their catalytic potentials tested in the ethanol steam reforming reaction aiming the production of hydrogen and presented a good performance. The results indicated that among tested materials, the sample calcined at 700 °C exhibited the highest stability, activity, and best selectivity relative to the product of interest. |
| Subject: | Material cerâmico Hidrogênio como combustível Compostos de molibdênio Catalisadores Raios X - Difração Raman, Espectroscopia de Química ambiental |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.matchemphys.2021.124301 |
| URI: | http://hdl.handle.net/1843/62085 |
| Issue Date: | 2021 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S0254058421000845 |
| metadata.dc.relation.ispartof: | Materials Chemistry and Physics |
| Appears in Collections: | Artigo de Periódico |
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