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Effect of Precious Metals on NO Reduction by CO in Oxidative Conditions

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  • معلومة اضافية
    • Contributors:
      Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV); Université du Littoral Côte d'Opale (ULCO); SFR Condorcet; Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS); Institut de chimie des milieux et matériaux de Poitiers UMR 7285 (IC2MP Poitiers ); Université de Poitiers = University of Poitiers (UP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); Institut de la matière condensée et des nanosciences / Institute of Condensed Matter and Nanosciences (IMCN); Université Catholique de Louvain = Catholic University of Louvain (UCL)
    • بيانات النشر:
      HAL CCSD
      Multidisciplinary digital publishing institute (MDPI)
    • الموضوع:
      2020
    • Collection:
      Institut national des sciences de l'Univers: HAL-INSU
    • نبذة مختصرة :
      International audience ; Carbon dioxide has become an environmental challenge, where the emissions have reached higher level than can be handled. In this regard, conversion of CO2 to value-added chemicals and thus recycling of CO2 appear a viable option. Prior to valorization, CO2 must be purified. Among several opportunities, oxyfuel combustion is a process in rapid development. However, the gases resulting from this process contain some traces of impurities that can hinder the recovery of CO2 such as NO and CO. This work has, therefore, focused on the study of the NO-CO reaction in an oxidizing medium, using heterogeneous catalytic materials based on various supported noble metals. These materials were extensively characterized by a variety of methods including Brunauer–Emmett–Teller (BET) surface area measurements, hydrogen chemisorption, transmission electron microscopy (TEM) and H2 temperature programmed reduction (H2-TPR). The results obtained show that the catalytic behavior of M/Al2O3 catalysts in CO oxidation and NO reduction with CO in oxidative conditions depends mainly on the nature of the metal. The best result for both reactions is obtained with Pt/Al2O3 catalyst. The Pt nanoparticles in their metallic form (Pt°) as evidenced by TPR could explain the activity.
    • Relation:
      hal-03533601; https://hal.science/hal-03533601; https://hal.science/hal-03533601/document; https://hal.science/hal-03533601/file/applsci-744008_cp-lpr-submitted.pdf
    • الرقم المعرف:
      10.3390/app10093042
    • الدخول الالكتروني :
      https://hal.science/hal-03533601
      https://hal.science/hal-03533601/document
      https://hal.science/hal-03533601/file/applsci-744008_cp-lpr-submitted.pdf
      https://doi.org/10.3390/app10093042
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.F666C356