Cu-TDPAT, an rht -type dual-functional metal-organic framework offering significant potential for use in H 2 and natural gas purification processes operating at high pressures

Haohan Wu, Kexin Yao, Yihan Zhu, Baiyan Li, Zhan Shi, Rajamani Krishna, Jing Li

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The separations of CO 2/CO/CH 4/H 2, CO 2/H 2, CH 4/H 2, and CO 2/CH 4 mixtures at pressures ranging to 7 MPa are important in a variety of contexts, including H 2 production, natural gas purification, and fuel-gas processing. The primary objective of this study is to demonstrate the selective adsorption potential of an rht-type metal-organic framework [Cu 3(TDPAT)(H 2O) 3]·10H 2O·5DMA (Cu-TDPAT), possessing a high density of both open metal sites and Lewis basic sites. Experimental high pressure pure component isotherm data for CO 2, CO, CH 4, and H 2 are combined with the Ideal Adsorbed Solution Theory (IAST) for estimation of mixture adsorption equilibrium. The separation performance of Cu-TDPAT is compared with four other microporous materials, specifically chosen in order to span a wide range of physicochemical characteristics: MgMOF-74, MIL-101, LTA-5A, and NaX. For all mixtures investigated, the capacity of Cu-TDPAT to produce the desired product, H 2 or CH 4, satisfying stringent purity requirements, in a fixed bed operating at pressures exceeding about 4 MPa, is either comparable to, or exceeds, that of other materials.

Original languageEnglish
Pages (from-to)16609-16618
Number of pages10
JournalJournal of Physical Chemistry C
Volume116
Issue number31
DOIs
Publication statusPublished - Aug 9 2012

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Gas fuel purification
natural gas
Carbon Monoxide
purification
Natural gas
Metals
Gas fuels
methylidyne
metals
Microporous materials
Adsorption
Isotherms
adsorption
beds
Processing
isotherms
purity
requirements
products
gases

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Cu-TDPAT, an rht -type dual-functional metal-organic framework offering significant potential for use in H 2 and natural gas purification processes operating at high pressures. / Wu, Haohan; Yao, Kexin; Zhu, Yihan; Li, Baiyan; Shi, Zhan; Krishna, Rajamani; Li, Jing.

In: Journal of Physical Chemistry C, Vol. 116, No. 31, 09.08.2012, p. 16609-16618.

Research output: Contribution to journalArticle

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