Hydrodeoxygenation of Guaiacol on Ru Catalysts: Influence of TiO2-ZrO2 Composite Oxide Supports

Mohong Lu, Hu Du, Bin Wei, Jie Zhu, Mingshi Li, Yuhua Shan, Jianyi Shen, Chunshan Song

Research output: Contribution to journalArticle

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Abstract

TiO2-ZrO2 composite oxides with a series of different Ti/Zr atomic ratios were synthesized by using a deposition precipitation method and employed as supports to prepare Ru catalysts. The physicochemical characteristics of Ru catalysts were tested by N2 adsorption, CO chemisorption, X-ray diffraction, H2 temperature-programmed reduction, scanning electron microscopy, transmission electron microscopy, NH3 adsorption, and X-ray photoelectron spectroscopy, and their catalytic hydrodeoxygenation (HDO) performance was evaluated by using guaiacol as a model compound. The Ru/TiO2 catalyst exhibits low HDO activity due to the surface modification of Ru particles with Ti3+ species formed during the reduction of Ru/TiO2. The HDO activity of Ru catalysts was significantly promoted by ZrO2 in the supports because it can hinder the migration of Ti3+ species onto the surface of Ru particles and thus more Ru active sites are exposed. The higher selectivity of benzene for Ru catalysts supported on TiO2-ZrO2 composite oxides suggests that they are promising supports for Ru catalysts in the HDO reaction of guaiacol.

Original languageEnglish (US)
Pages (from-to)12070-12079
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume56
Issue number42
DOIs
StatePublished - Oct 25 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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