Effect of mesoporous carbon support nature and pretreatments on palladium loading, dispersion and apparent catalytic activity in hydrogenation of myrcene

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

R. Castro Contreras (Autor) Outra; B. Guicheret (Autor) Outra; Bruno F. Machado (Autor) FEUP; C. Rivera-Cárcamo (Autor) Outra; M. A. Curiel Alvarez (Autor) Outra; B. Valdez Salas (Autor) Outra; M. Ruttert (Autor) Outra; T. Placke (Autor) Outra; A. Favre Réguillon (Autor) Outra; L. Vanoye (Autor) Outra; C. de Bellefon (Autor) Outra; R. Philippe (Autor) Outra; P. Serp (Autor) Outra

Revista

Título: Journal of Catalysis

Vol. 372

Páginas: 226-244

ISSN: 0021-9517

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

ISI Web of Science

Scopus - 12 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas > Tecnologia > Nanotecnologia ; Ciências Físicas > Química > Catálise heterogénea

FOS: Ciências da engenharia e tecnologias > Nanotecnologia

Projetos Associados

IF/00301/2015 - Projeto de investigação exploratória

LSRE-LCM - Laboratório de Processos de Separação e Reação - Laboratório de Catálise e Materiais

Outras Informações

ID Authenticus: P-00Q-AB4

DOI: 10.1016/j.jcat.2019.02.034

Abstract (EN): The influence of the carbon support characteristics on Pd loading, dispersion and activity in Pd/C catalysts has been analyzed. Several carbon nanomaterials, including multi-walled CNTs, nitrogen-doped CNTs, sulfur-doped CNTs, large- and small-diameter nanofibers, few-layer graphene, and a fibrous carbon have been produced, functionalized, defunctionalized and characterized using several techniques (e.g., nitrogen adsorption, Raman spectroscopy, XPS, TGA, and elemental analysis). These supports present different surface chemistry, arising from different features (defect concentration, inter-defect distances, longrange order, and orientation of the graphene layers) and specific surface areas. The most relevant parameters were obtained by characterization of the materials by Raman, XPS, nitrogen adsorption, and XRD. Twenty-four palladium catalysts with the same nominal loading (2%w/w) were prepared by wet impregnation using an acetone solution of Pd nitrate. These 24 catalysts were characterized by ICP, XRD, XPS and TEM. The final Pd loading varied between 1 and 2%w/w and the Pd particle size ranged from 1.5 to 3.3 nm, depending on the nature of the support. The parameters influencing both Pd loading and dispersion are discussed, and their very high activity for the myrcene complete hydrogenation are reported.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 19