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SSZ-13 is a high-silica zeolite with the CHA topology. Materials with this topology are of industrial interest, as potential catalysts for application in the methanol to olefins (MTO) reaction. Recently SSZ-13 has attracted attention as the catalyst for selective catalytic reduction (SCR) of NOx. [8]
As a result, the pore entrance of LTA is an 8-ring (0.41 nm [3]) and belongs to the small pore zeolite, while the pore entrance of FAU is a 12-ring (0.74 nm [3]) and belongs to the large pore zeolite, respectively. Materials with a 10-ring are called medium pore zeolites, a typical example being ZSM-5 (MFI).
The sieving properties of molecular sieves are classified as microporous (3-10 Å pores) including zeolite A, LTA, and FAU. Some clays, active carbon, and porous glass meet this criterion. mesoporous materials (<2 nm pores)
Faujasite (FAU-type zeolite) is a mineral group in the zeolite family of silicate minerals.The group consists of faujasite-Na, faujasite-Mg and faujasite-Ca. They all share the same basic formula (Na 2,Ca,Mg) 3.5 [Al 7 Si 17 O 48]·32(H 2 O) by varying the amounts of sodium, magnesium and calcium. [1]
Solid sorbents for carbon capture include a diverse range of porous, solid-phase materials, including mesoporous silicas, zeolites, and metal-organic frameworks.These have the potential to function as more efficient alternatives to amine gas treating processes for selectively removing CO 2 from large, stationary sources including power stations. [1]
Clinoptilolite is a natural zeolite composed of a microporous arrangement of silica and alumina tetrahedra. It has the complex formula (Na,K,Ca) 2–3 Al 3 (Al,Si) 2 Si 13 O 36 •12H
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Pentasil-zeolites are defined by their structure type, and more specifically by their X-ray diffraction patterns. ZSM -5 is the trade name of a pentasil-zeolite. As early as 1967, Argauer and Landolt worked out parameters for the synthesis of pentasilzeolites, particularly those relating to the following molar ratios: OH − /SiO 2 = 0.07–10, SiO 2 /Al 2 O 3 = 5–100, H 2 O/SiO 2 = 1–240. [1]