Synthesis of T-type zeolite nanoparticles for the separation of CO2/N2 and CO2/CH4 by adsorption process

Qiying Jiang, Jeffrey Rentschler, Govind Sethia, Steven Weinman, Roger Perrone, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

The effects of aging, crystallization temperature and time, and structure directing agent (SDA) on the synthesis of T-type zeolite nanoparticles were investigated systematically. The synthesized zeolites were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET measurements. Under optimal synthesis conditions, pure T-type zeolites with a particle size of 150-200nm were successfully prepared in a time period as short as 120h. The equilibrium adsorption of pure gases CO2, N2, and CH4 on the synthesized T-type zeolite nanoparticles were measured at 288, 298 and 313K. The T-type zeolite nanoparticles showed the capability of selective adsorption of CO2 over N2 and CH4. At 288K and 100kPa, the selectivity of CO2/N2 and CO2/CH4 of the T-type zeolite nanoparticles was 53.71 and 19.15 respectively. Compared to the micro-level T-type zeolite particles, the T-type zeolite nanoparticles exhibited a higher CO2 adsorption capacity. At 288K and 100kPa, the T-type zeolite nanoparticles showed 4.01mmol/g CO2 adsorption capacities, 30% higher than micro-level T-type zeolite. The dynamic adsorption experiments of CO2/N2 and CO2/CH4 binary gas mixtures demonstrated that the synthesized T-type zeolite nanoparticles have promising adsorption capability and recyclability for the separation of CO2/N2 and CO2/CH4 in the potential application to post-combustion CO2 separation or natural gas purification process.

Original languageEnglish
Pages (from-to)380-388
Number of pages9
JournalChemical Engineering Journal
Volume230
DOIs
StatePublished - Aug 15 2013

Keywords

  • Adsorption
  • CO capture
  • Dynamic adsorption
  • Nanoparticle
  • T-type zeolite

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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