Solid Fe Resources Separated from Rolling Oil Sludge for CO Oxidation

Abstract

The efficient recycling of valuable resources from rolling oil sludge (ROS) to gain new uses remains a formidable challenge. In this study, we reported the recycling of solid Fe resources from ROS by a catalytic hydrogenation technique and its catalytic performance for CO oxidation. The solid Fe resources, after calcination in air (Fe2O3-H), exhibited comparable activity to those prepared by the calcinations of ferric nitrate (Fe2O3-C), suggesting that the solid resources have excellent recycling value when used as raw materials for CO oxidation catalyst preparation. Further studies to improve the catalytic performance by supporting the materials on high surface area 13X zeolite and by pretreating the materials with CO atmosphere, showed that the CO pretreatment greatly improved the CO oxidation activity and the best activity was achieved on the 20 wt.%Fe2O3-H/13X sample with complete CO conversion at 250 °C. CO pretreatment could produce more oxygen vacancies, facilitating O2 activation, and thus accelerate the CO oxidation reaction rate. The excellent reducibility and sufficient O2 adsorption amount were also favorable for its performance. The recycling of solid Fe resources from ROS is quite promising for CO oxidation applications.

Ultralow Loading Fe on N-Doped Carbon Nanospheres for Anaerobic Cleavage of C–C Bonds in Biomass Vicinal Diols

“…In detail, the peaks observed at 709.5 and 722.4 eV are ascribed to Fe (III) species, and similarly, the peaks at 712.9 and 725.8 eV are corresponding to Fe (II) species. 44,45 Additionally, the deconvoluted peak located at 717.3 eV is identified as the satellite peak. Overall, the results reconfirm that the catalysts contain ultralow levels of Fe, which is present in the form of multiple valence species.…”

Editorial to the Special Issue “Molecular Aspects in Catalytic Materials for Pollution Elimination and Green Chemistry”

“…The efficient recycling of valuable resources from rolling oil sludge (ROS) is meaningful. Gao et al [ 9 ] reported the recycling of solid Fe resources from ROS by a catalytic hydrogenation technique, and discussed its catalytic performance for CO oxidation. The solid Fe resources calcinated in air (Fe 2 O 3 -H) exhibited comparable activity for CO oxidation to those prepared by the calcinations of ferric nitrate (Fe 2 O 3 -C).…”