Promotion effects of Pd on tungsten carbide catalysts: physiochemical properties and cellulose conversion performance
作者： Glauco F. Leal , Silvia F. Moya , Debora M. Meira , Dean H. Barrett , Erico Teixeira-Neto
DOI: 10.1039/C6RA15819F
关键词:
摘要: A multi-functional catalyst, which is able to perform both retro-aldol reactions followed by hydrogenation, required convert cellulose into value-added ethylene glycol (EG) in a one-pot reaction. Herein, we show the results of catalyst comprising Pd-promoted tungsten carbide supported on activated carbon. Pd acts hinder carbon deposition onto surface during carburization process, through inhibition methane decomposition species surface. XPS and TEM analysis cleaner improves W/C ratio. The enhanced interaction between W2C, higher conversions, yields when compared non-promoted or Ni promoted catalysts reported elsewhere. XAS, HR-TEM SI-XEDS showed nanoparticles are well dispersed contact with W2C. Despite temperatures, enhance catalytic properties conversion reaction towards EG production Ni-promoted under same conditions.
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