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Catalytic removal of NO2 by Nickel _ platinum catalyst supported on multi-wall carbon nanotubes

Paper Topic: 
Air Quality
 

Pages :
-

Corresponing Author: 
Professor Farshid Ghorbani Shahna Center of Excellence for Occupational Health, Occupational Health and Safety Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. PO Box: 65175-4171; Post code: 6517838695. Tel:
 
Authors: 
Reza Aghababaei Talkhonche Farshid Ghorbani Shahna Alireza Mohammadrezaei Maryam Farhadian
Paper ID: 
gnest_03160
Paper Status: 
Proof
Date Paper Accepted: 
22/06/2020
Paper online: 
25/6/2020
Visual abstract: 
Abstract: 

In the present study, the NO2 removal efficiency at concentrations of 3000 to 5000ppm was evaluated by nickel and platinum bimetallic catalyst supported on multiwalled carbon nanotubes (Ni-Pt/MWCNT) along with water vapor at different space velocity and temperatures. Morphological and structural characteristics, material formation phases and catalyst regeneration were investigated by FE-SEM, XRD and TPR tests, respectively. The results showed that increasing the weight percentage of platinum at Ni-Pt/MWCNT catalyst improved the removal efficiency at low temperature. The catalyst 25%W.Ni-3%W.Pt/MWCNT provided 92% removal efficiency at the temperature of 300℃, space velocity of 25000/hr and concentration of 3000 ppm, while,the 15%W.Ni-5%W.Pt/MWCNT represented highest removal efficiency (70%) at the temperature of 150℃. The removal efficiency of Ni-Pt/MWCNT catalyst is affected by the weight percentage of nickel and platinum, as well as the NO2 concentration at various temperatures. The results suggest that H_2 O can be used as a reducing agent to reduce 〖NO〗_2 by produced〖 H〗^+. The 25%W.Ni-3%W.Pt/MWCNT catalyst removal efficiency at the vicinity of water vapor and concentration of 3000 ppm 〖NO〗_2 , unchanged stability over the period of 100 minute.

Keywords: 
Catalysis, Carbon Nanotube, Nitrogen Oxides, Nickel, Platinum, Air Pollution Control