Selective adsorption of ethylene over ethane on natural mordenite and on K+-exchanged mordenite

Vargas-Hernández, Diana; Pérez-Cruz, María Ana; Hernández-Huesca, Rosario

doi:10.1007/s10450-015-9658-8

Cited by 19 publications

(8 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, a number of adsorbents have been evaluated for the adsorptive separation of olefin/paraffin mixtures, but only a very limited number of zeolites have shown the potential for the kinetically controlled separation of olefins and paraffins. [78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93] The development of new adsorbents with adequate selectivity and capacity is a key step for the efficient separation of these molecules. Emerging as a new family of porous adsorbent material, a few metal-organic frameworks have been reported to show great potential in these separations mainly by one or more of the following mechanisms: (1) the thermodynamic equilibrium effect; (2) kinetic effect; (3) gateopening effect; and (4) molecular sieving effect.…”

Section: Adsorptive Separation Of Olefins Over Paraffinsmentioning

confidence: 99%

Potential of microporous metal–organic frameworks for separation of hydrocarbon mixtures

Bao

Chang

Xing

et al. 2016

Energy Environ. Sci.

575

337

View full text Add to dashboard Cite

show abstract

Section: Adsorptive Separation Of Olefins Over Paraffinsmentioning

confidence: 99%

Potential of microporous metal–organic frameworks for separation of hydrocarbon mixtures

Bao

Chang

Xing

et al. 2016

Energy Environ. Sci.

575

337

View full text Add to dashboard Cite

show abstract

“…Numerous conventional adsorbents have been widely investigated for ethylene/ethane separations. For example, it was reported that ethylene and ethane uptakes for natural mordenites were about 0.91 and 0.38 mmol/g at 293 K and 50 kPa, respectively . Yang and co-workers reported that the adsorption capacities of ethylene and ethane on zeolite 4A separately were 2.8 and 2.4 mmol/g at 298 K and 100 kPa, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…For example, it was reported that ethylene and ethane uptakes for natural mordenites were about 0.91 and 0.38 mmol/g at 293 K and 50 kPa, respectively. 11 Yang and co-workers 5 reported that the adsorption capacities of ethylene and ethane on zeolite 4A separately were 2.8 and 2.4 mmol/g at 298 K and 100 kPa, respectively. Furthermore, Yang's group 5 also found that the Bergbau-Forschung carbon molecular sieve (CMS) with pore sizes in the range of 0.3−0.5 nm could completely exclude ethane, but its ethylene uptake was only 1.1 mmol/g at 298 K and 100 kPa.…”

Section: Introductionmentioning

confidence: 99%

Selective Adsorption of Ethane over Ethylene in PCN-245: Impacts of Interpenetrated Adsorbent

Shi

Chen

et al. 2018

ACS Appl. Mater. Interfaces

114

View full text Add to dashboard Cite

The separation of ethane from ethylene using cryogenic distillation is an energy-intensive process in the industry. With lower energetic consumption, the adsorption technology provides the opportunities for developing the industry with economic sustainability. We report an iron-based metal-organic framework PCN-245 with interpenetrated structures as an ethane-selective adsorbent for ethylene/ethane separation. The material maintains stability up to 625 K, even after exposure to 80% humid atmosphere for 20 days. Adsorptive separation experiments on PCN-245 at 100 kPa and 298 K indicated that ethane and ethylene uptakes of PCN-245 were 3.27 and 2.39 mmol, respectively, and the selectivity of ethane over ethylene was up to 1.9. Metropolis Monte Carlo calculations suggested that the interpenetrated structure of PCN-245 created greater interaction affinity for ethane than ethylene through the crossing organic linkers, which is consistent with the experimental results. This work highlights the potential application of adsorbents with the interpenetrated structure for ethane separation from ethylene.

show abstract

“…Natural mordenite was also altered with K + ions to explore olefin−paraffin separation, and although the ethylene selectivity improved with ion exchange, there was a significant reduction in the adsorption capacity due to the decrease in micropore volume because of the replacement of Na + and Ca 2+ with K + cations that have larger diameter. 72 As facile as introducing π-complexation into the system is, the same can also be deactivated under certain conditions. πcomplexation by Ag + was reported to be deactivated upon exposure to hydrogen.…”

Section: Functionalization Of Carbon-basedmentioning

confidence: 99%

Selectivity Tuning of Adsorbents for Ethane/Ethylene Separation: A Review

Anwar

Khaleel

Wang

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Ethylene is an important feedstock for the production of many key-valued compounds, especially polymers. About 60% of the total ethylene produced is utilized for the production of polyethylene, while ethylene is normally produced by steam cracking of naphtha along with traces of ethane, which is undesirable. Considering the energy-intensive nature of the current technology to obtain ultrapure ethylene, the development of novel materials for separating ethylene from ethane by adsorption is of great significance, yet it remains challenging owing to the close molecular sizes and physical properties of the two compounds. Both ethylene- and ethane-selective adsorbents are reviewed in this work. Yet, as the industrial feed is rich in ethylene with traces of ethane, in order to obtain polymer grade ethylene, multiple adsorption–desorption cycles are required, which is yet again energy-demanding. Thus, ethane-selective adsorbents are energetically favorable; hence, in this Review, we pay particular focus on ethane-selective adsorbents. The rationale behind reverse-selective adsorbents is critically reviewed and discussed. Most of the ethane-selective adsorbents have been reported to exhibit low selectivity compared to ethylene-selective ones, as reverse-selectivity is mostly based on weak van der Waals interactions. In addition, we focused on various reported mechanisms behind the adsorptive separation of ethane/ethylene mixtures, as well as modifications and surface functionalization techniques reported for different types of adsorbents investigated for this separation.

show abstract

Selective adsorption of ethylene over ethane on natural mordenite and on K+-exchanged mordenite

Cited by 19 publications

References 57 publications

Potential of microporous metal–organic frameworks for separation of hydrocarbon mixtures

Potential of microporous metal–organic frameworks for separation of hydrocarbon mixtures

Selective Adsorption of Ethane over Ethylene in PCN-245: Impacts of Interpenetrated Adsorbent

Selectivity Tuning of Adsorbents for Ethane/Ethylene Separation: A Review

Contact Info

Product

Resources

About