4 years ago

Simplified Kinetic Modeling of Propane Aromatization over Ga-ZSM-5 Zeolites: Comparison with Experimental Data

Simplified Kinetic Modeling of Propane Aromatization over Ga-ZSM-5 Zeolites: Comparison with Experimental Data
Massimo Migliori, Girolamo Giordano, Alessio Caravella, Enrico Catizzone, Alfredo Aloise
This paper presents new results about experimental tests and kinetic modeling of propane aromatization on a Ga-ZSM-5 zeolite. The presence of gallium as a doping metal promotes dehydrogenation reactions, limiting the formation of side products (cracking fuel gas) and increasing the yield to aromatics. In this study, kinetic tests of propane aromatization at different values of reaction temperature (500, 525, and 550 °C) and contact time (0.07, 0.14, and 0.28 h) are performed in a multi-tubular reactor, aiming at investigating the complex reaction scheme of propane aromatization at a constant pressure (3 bar). Based on the obtained experimental data, a kinetic analysis is performed considering cracking products (methane and ethane/ethylene) and main aromatic compounds (benzene, toluene, xylenes, and ethylbenzene). This simplified approach is found to be a robust tool to predict products distribution when experimental data points are not enough to perform a reliable model parameters estimation. In the specific case, the adopted macroscopic kinetic model nicely predicts the catalyst behavior in terms of both propane conversion and products distribution. The kinetic parameters evaluation for the synthesized Ga-ZSM-5 sample also suggests a reaction temperature of 525 °C as an optimum value to favor the aromatization rather than the cracking of propane.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b02868

DOI: 10.1021/acs.iecr.7b02868

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.