Study of ethylene adsorption on zeolite NaY modified with group I metal ions

Sue-aok, Niramai; Srithanratana, Tipaporn; Rangsriwatananon, Kunwadee; Hengrasmee, Sunantha

doi:10.1016/j.apsusc.2010.01.065

Cited by 49 publications

(20 citation statements)

References 13 publications

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“…The isomorphic substitution of Si by Al, leads to a negative charge density in the zeolite lattice. This charge is neutralized by introducing monovalent, divalent or trivalent cations in the structural sites of the zeolite 8) . Ion exchange of the balanced cations can result in clay and zeolites with specific properties such as selective adsorption.…”

Section: Introductionmentioning

confidence: 99%

“…Sue-aok et al reported the enhancement of ethylene adsorptivity upon modification of NaY zeolite by group I metal cations 8) . Patdhanagul et al demonstrated that zeolite NaY modified with phenyl trimethyl ammonium bromide (PTAB) as a cationic surfactant, is capable to modified only the external part of zeolite and not capable to enter the micropores of zeolite due to its large long chain, showing an appreciable increase in ethylene adsorption 2,4) .…”

Section: +mentioning

confidence: 99%

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Development of an Active Film With Natural Zeolite as Ethylene Scavenger

Coloma

Rodríguez

Bruna

et al. 2014

J. Chil. Chem. Soc.

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Ethylene (C 2 H 4 ) acts as a plant hormone, growth regulator that has a number of effects on the growth. Ethylene accelerates respiration, leading to maturity and also softening and ripening of many kinds of fruits. Although ethylene has some positive effects, it is often hazardous to the quality and shelf-life of fruits and vegetables. The removal of ethylene and/or inhibition of the effect of ethylene in stored environments is fundamental to maintaining postharvest quality of climacteric produce. In this study, the efficiency of a Chilean natural zeolite (NZ-Ch) against a commercial Na + montmorillonite (Cloisite Na + ) was studied. The aluminosilicate characterization (XDR, FTIR, EGME, CEC, chemical composition) indicates that natural Chilean zeolite belongs to mordenite group. Elemental chemical analysis indicated that compensating ions, were sodium for MTNa + and calcium, sodium and potassium for NZ-Ch, and in both aluminosilicates copper was present in their composition. Ethylene adsorption kinetics were fitted to a pseudo-second order model. The rate constant of the ethylene adsorption was nearly double for NZ-Ch compared with MtNa

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Section: Introductionmentioning

confidence: 99%

Section: +mentioning

confidence: 99%

Development of an Active Film With Natural Zeolite as Ethylene Scavenger

Coloma

Rodríguez

Bruna

et al. 2014

J. Chil. Chem. Soc.

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“…Breakthrough experiments showed that CaX has decent performance in separating these three gases from the C2‐deficient product streams of oxidative coupling of methane (OCM). Sue‐aok et al modified NaY with group I metal salts and investigated the impacts of cation exchanges on ethylene adsorption in the zeolites . It was found that the modification steps have little effect on the crystallinity of the zeolites.…”

Section: Zeolites For Adsorptive Light Olefin/paraffin Separationsmentioning

confidence: 99%

“…Sue-aok et al modified NaY with group I metal salts and investigated the impacts of cation exchanges on ethylene adsorption in the zeolites. [69] It was found that the modification steps have little effect on the crystallinity of the zeolites.…”

Section: Cation Exchange In Cationic Zeolites For Improved Olefin/ Pamentioning

confidence: 99%

Alternatives to Cryogenic Distillation: Advanced Porous Materials in Adsorptive Light Olefin/Paraffin Separations

Wang

Peh

Zhao

2019

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209

139

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As primary feedstocks in the petrochemical industry, light olefins such as ethylene and propylene are mainly obtained from steam cracking of naphtha and short chain alkanes (ethane and propane). Due to their similar physical properties, the separations of olefins and paraffins—pivotal processes to meet the olefin purity requirement of downstream processing—are typically performed by highly energy‐intensive cryogenic distillation at low temperatures and high pressures. To reduce the energy input and save costs, adsorptive olefin/paraffin separations have been proposed as promising techniques to complement or even replace cryogenic distillation, and growing efforts have been devoted to developing advanced adsorbents to fulfill this challenging task. In this Review, a holistic view of olefin/paraffin separations is first provided by summarizing how different processes have been established to leverage the differences between olefins and paraffins for effective separations. Subsequently, recent advances in the development of porous materials for adsorptive olefin/paraffin separations are highlighted with an emphasis on different separation mechanisms. Last, a perspective on possible directions to push the limit of the research in this field is presented.

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“…Besides, many agricultural commodities produce ethylene during storage and transportation [7]. Ethylene can bring about physical and chemical changes in the appearance and texture of fruits and vegetables such as yellowing and softening [8], thereby considerably degrading the quality.…”

Section: Introductionmentioning

confidence: 99%