5 years ago

Selective Adsorption Performances of UiO-67 for Separation of Light Hydrocarbons C1, C2, and C3

Selective Adsorption Performances of UiO-67 for Separation of Light Hydrocarbons C1, C2, and C3
Yufan Zhang, Huiyu Xiao, Xun Wang, Zhong Li, Xin Zhou
In this work, adsorption performances of UiO-67 for light hydrocarbon separation were investigated. UiO-67 with a BET surface area of 2590 m3·g–1 was prepared by a hydrothermal method and then characterized. Isotherms of CH4, C2H6, and C3H8 (C1, C2 and C3) on UiO-67 were measured by a volumetric method, and fixed bed experiments were carried out to evaluate dynamic separation performance of UiO-67. The C2H6/CH4, C3H8/CH4, and C3H8/C2H6 adsorption selectivities of the sample were estimated separately on the basis of ideal adsorbed solution theory (IAST), DIH-based equation, and breakthrough curves. The results showed that (a) the adsorption capacities of UiO-67 reached separately 3.00 and 8.18 mmol·g–1 for C2H6 and C3H8 at 1 atm and 298 K, while its CH4 adsorption capacity was only 0.45 mmol·g–1; (b) the isotherms of the light hydrocarbons can be well described by dual-site Langmuir–Freundlich models; (c) isosteric heats of these light hydrocarbons adsorption followed the order: C3H8 > C2H6 > CH4; and (d) fixed bed experiments showed that the dynamic adsorption selectivity of UiO-67 toward C2H6/CH4 and C3H8/CH4 binary mixtures reached 7.3 and 69.3, respectively. Hence, UiO-67 is a promising adsorbent for the separation of light hydrocarbons.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b01420

DOI: 10.1021/acs.iecr.7b01420

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.