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Molecular sieve zeolite technology - the first twenty-five years

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Flanigen, E. M.·1980·Pure and Applied Chemistry
DOI 10.1351/pac198052092191
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Abstract

In twenty-five years molecular sieve zeolites have substantially impacted adsorption and catalytic process technology throughout the chemical process industries; provided timely solutions to energy and environmental problems; and grown to over a hundred million dollar industry worldwide.The evolution in zeolite materials with improved or novel properties has strongly influenced the expansion of their applications, and provided new flexibility in the design of products and processes.

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Crossref · 10.1351/pac198052092191

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  • Zeolites and related materials present high thermal and moderate to high chemical stabilities.

    “Zeolites and related materials present high thermal and moderate to high chemical stabilities.”

    From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [16]

    The TRANSITION IN PROPERTIES section supports high thermal stability, reporting decomposition temperatures from about 700°C to above 1300°C. Chemical stability is more conditional than the claim suggests: low-silica zeolites are described as fragile in acid, while high-silica zeolites have decreased base stability. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

  • At smaller scales, use of zeolite LiLSX in VPSA processes is state of the art for separation of oxygen from air.

    “However, at smaller scales, the use of zeolite LiLSX in VPSA processes is state of the art.4,16,249,250,437,438”

    From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [16]

    In ‘The Evolution in Applications’ (page not provided), the paper describes zeolite-based pressure swing adsorption for relatively low-tonnage oxygen production from air. It does not identify LiLSX, specify vacuum pressure swing adsorption (VPSA), or call that combination state of the art. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

  • A thermodynamically controlled separation based on selective adsorption of N2 at close to ambient temperatures became the method of choice for air separation.

    “Nonetheless, a thermodynamically controlled separation based on selective adsorption of N2 at close to ambient temperatures became the method of choice.16”

    From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [16]

    In “The Evolution in Applications” (page unavailable), the paper says pressure-swing air separation relies on a strong interaction between nitrogen and the zeolite cation, supporting selective adsorption rather than size-based sieving. It says the process became commercially competitive with established cryogenic separation for relatively low-tonnage oxygen production, but does not establish that it became the method of choice for air separation generally or specify close-to-ambient temperatures. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

  • Zeolites' well-defined pore size, compositional tunability, thermal stability, and commercial availability since the 1950s have boosted their use in industrial and domestic applications.

    “Their well-defined pore size, compositional tunability, thermal stability, and commercial availability since the 1950s15−18 have boosted their use in industrial and domestic applications, which take advantage of their unique properties.”

    From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [16]

  • Pure-silica and high-silica zeolites present a hydrophobic surface and generally larger thermal and chemical stabilities than traditional zeolites, making them appealing for adsorption applications.

    “Pure-silica and high-silica zeolites are under intense research, as they present a hydrophobic surface and generally also larger thermal and chemical stabilities than traditional zeolites, which make them very appealing for adsorption applications.16,56−58”

    From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [16]

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Authors
Flanigen, E. M.
Affiliations
Union Carbide (United States) (US)
Corresponding author
Flanigen, E. M.
Venue
Pure and Applied Chemistry
Publisher
Walter de Gruyter GmbH
Published
1980-01-01
Volume
52
Issue
9
Pages
2191-2211
ISSN
  • 0033-4545 (ISSN-L)
  • 1365-3075
DOI
10.1351/pac198052092191
OpenAlex
W4244180337
Semantic Scholar
8a3584cdb68ca43866be998a6b8034f766b39037
Cited by
118
References
2
Citations by year
2026: 2 · 2025: 4 · 2024: 9 · 2023: 9 · 2022: 6 · 2021: 9 · 2019: 4 · 2018: 4 · 2017: 5 · 2016: 3 · 2015: 3 · 2014: 2 · 2013: 1 · 2012: 2
FWCI
1.80
Type
journal article
Language
en
Open access
Locations
Pure and Applied Chemistry (publishedVersion)
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Organic Frameworks: Synthesis and Applications
Keywords
zeolites, adsorption, catalysis, chemical process industry

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