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Alexander U. Czaja

Bio: Alexander U. Czaja is an academic researcher from University of California. The author has contributed to research in topics: Metal-organic framework & Ethylene oxide. The author has an hindex of 11, co-authored 15 publications receiving 2556 citations. Previous affiliations of Alexander U. Czaja include University of California, Los Angeles.

Papers
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Journal ArticleDOI
TL;DR: An overview of the potential applications of MOFs in the chemical industry is presented and the synthesis and characterization of the materials are briefly discussed from the industrial perspective.
Abstract: New materials are prerequisite for major breakthrough applications influencing our daily life, and therefore are pivotal for the chemical industry. Metal–organic frameworks (MOFs) constitute an emerging class of materials useful in gas storage, gas purification and separation applications as well as heterogeneous catalysis. They not only offer higher surface areas and the potential for enhanced activity than currently used materials like base metal oxides, but also provide shape/size selectivity which is important both for separations and catalysis. In this critical review an overview of the potential applications of MOFs in the chemical industry is presented. Furthermore, the synthesis and characterization of the materials are briefly discussed from the industrial perspective (88 references).

2,002 citations

Journal ArticleDOI
TL;DR: A procedure for making covalently linked organometallic complexes within the pores of metal-organic frameworks (MOFs) has been described and an alternative way of linking the first metalated link into the desired metalated MOF structure, IRMOF-77, was successful.
Abstract: A procedure for making covalently linked organometallic complexes within the pores of metal−organic frameworks (MOFs) has been described. An N-heterocyclic carbene precursor containing link L0 was prepared and then constructed into a MOF-5-type structure (IRMOF-76). Attempts to produce covalently bound organometallic complexes in IRMOF-76 were unsuccessful. An alternative way of linking the first metalated link, L1, into the desired metalated MOF structure, IRMOF-77, was successful. IRMOF-76 and -77 were characterized by single-crystal X-ray studies. Demonstration of permanent porosity and successful substitution of the pyridine coligand in IRMOF-77 are also described.

207 citations

Journal ArticleDOI
TL;DR: The vanadium-containing metal-organic frameworks (MOFs) MIL-47 and MOF-48 are found to have high catalytic activity and chemical stability and convert methane selectively to acetic acid with 70% yield based on K(2)S( 2)O(8) as an oxidant.
Abstract: A catalytic system combining the high activity of homogeneous catalysts and the ease of use of heterogeneous catalysts for methane activation is reported. The vanadium-containing metal-organic frameworks (MOFs) MIL-47 and MOF-48 are found to have high catalytic activity and chemical stability. They convert methane selectively to acetic acid with 70% yield (490 TON) based on K(2)S(2)O(8) as an oxidant. Isotopic labeling experiments showed that two methane molecules are converted to the produced acetic acid. The MOF catalysts are reusable and remain catalytically active for several recycling steps without losing their crystalline structures.

156 citations

Patent
01 Feb 2010
TL;DR: In this paper, porous metal organic frameworks for separating and recovering ethylene oxide were proposed for the separation and recovery of polyethylene (PE) from polypropylene (PE).
Abstract: This disclosure relates to porous metal organic frameworks for ethylene oxide separation and recovery.

52 citations


Cited by
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Journal ArticleDOI
30 Aug 2013-Science
TL;DR: Metal-organic frameworks are porous materials that have potential for applications such as gas storage and separation, as well as catalysis, and methods are being developed for making nanocrystals and supercrystals of MOFs for their incorporation into devices.
Abstract: Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.

10,934 citations

Journal ArticleDOI
TL;DR: Kenji Sumida, David L. Rogow, Jarad A. Mason, Thomas M. McDonald, Eric D. Bloch, Zoey R. Herm, Tae-Hyun Bae, Jeffrey R. Long
Abstract: Kenji Sumida, David L. Rogow, Jarad A. Mason, Thomas M. McDonald, Eric D. Bloch, Zoey R. Herm, Tae-Hyun Bae, Jeffrey R. Long

5,389 citations