Microporous and Mesoporous Materials
Microporous and Mesoporous Materials
5 years ago

Numerical study of the diffusion of binary hydrocarbon blends in ZSM-12 zeolites

Numerical study of the diffusion of binary hydrocarbon blends in ZSM-12 zeolites
The experimental results for the simultaneous diffusion of toluene and ethylene in one dimensional channels of the ZSM-12 zeolite which have been reported in a previous publication are fitted with an original finite difference numerical simulation model. This system is mimicking the single file diffusion of hydrocarbons in the zeolite passive hydrocarbon trap installed at the exhaust of an internal combustion engine, prior to the catalytic muffler, to solve the hydrocarbon cold start emission problem. The study encompasses the effects of Na+, H+ and Ag+ counterions and temperature ramp on the temperature programmed desorption of the binary mixture. A simple lattice gas model is proposed to simulate the binary gas diffusion in a one dimensional pore lattice. Numerical simulations show that taking into account an Arrhenius dependence of the binary gas diffusion coefficient on temperature yielded a good fit of these experimental results, explaining many significant features of the temperature programmed desorption profile observed experimentally.

Publisher URL: www.sciencedirect.com/science

DOI: S1387181117305152

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.