5 years ago

MnOx-TiO2 and Sn doped MnOx-TiO2 selective reduction catalysts prepared using MWCNTs as the pore template

MnOx-TiO2 and Sn doped MnOx-TiO2 selective reduction catalysts prepared using MWCNTs as the pore template
The stability of MnOx based low temperature SCR catalysts remained to be a serious issue. This report explored use of multi-walled carbon nanotubes (MWCNTs) network with uniform structure as a “rigid” pore template for synthesis of mesoporous MnOx-TiO2 SCR catalyst with high surface area and high stability. The results showed that MWCNT network imposed MnOx-TiO2 catalyst a mesoporous porosity with a narrow pore size distribution centered on ∼13.2nm and a surface area of 131.6m2 g−1 stabilized at 500°C. The mesoporous structure was formed by interconnected nanoparticles, comprised of crystallized rutile TiO2 core surrounded by amorphous MnOx, with an average diameter of ∼8nm. The catalyst exhibited an excellent low temperature SCR activity and selectivity as well as high resistance to deactivation and poison by H2O and SO2. SnO2 modification led to degradation of catalytic performance in low temperature (60–180°C) side, but improvement at high temperature side (240–360°C), especially at high gas velocity, which can be attributed to change in structure, reactivity of MnOx and surface acidity induced by SnO2 addition.

Publisher URL: www.sciencedirect.com/science

DOI: S1385894717310306

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.