Monolayer cuprous chloride dispersed on pillared clays for olefin-paraffin separations by ?-complexation

Cheng, Linda S.; Yang, Ralph T.

doi:10.1007/bf00704146

Cited by 62 publications

(36 citation statements)

References 15 publications

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“…Literature data is limited for the CuCl/NaX adsorbent. The adsorption enthalpy and isosteric heat are in the range of values reported for CuCl on pillared clays (Cheng and Yang 1995). Isosteric heats of adsorption between 45-54 kJ mol −1 have been reported for propylene, and for propane the reported values are between 22-29 kJ mol −1 .…”

Section: Single Component Isothermsmentioning

confidence: 54%

Propylene/propane mixture adsorption on faujasite sorbents

et al. 2008

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The adsorption of propylene and propane on zeolite NaX with and without a saturated (36 wt%) amount of CuCl have been investigated. The single component adsorption isotherms could be well described with a Dual-Site Langmuir model. The dispersion of CuCl results in a decrease of the maximum adsorption capacity of the zeolite for both components. For propylene a strong adsorption via π-complexation with CuCl is present, increasing the adsorption selectivity of the zeolite.The binary mixture (50 : 50) adsorption was determined via breakthrough/desorption experiments at 318, 358 and 408 K with a partial pressure of the two components between 0.8-54 kPa. For NaX the mixture loading could be well described with the IAS-theory and the single component isotherms, both qualitatively and quantitatively. A transition from an enthalpy controlled adsorption at lower loadings to an entropy affected adsorption at higher loadings was observed. The IAS-theory could only qualitatively describe the trends in the observed mixture adsorption for the CuCl/NaX adsorbent. The dispersion of CuCl in NaX results in a modest improvement of the adsorption selectivity for propylene over propane (from 3-7 to 15-30) but at the expense of a reduced capacity.

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Section: Single Component Isothermsmentioning

confidence: 54%

Propylene/propane mixture adsorption on faujasite sorbents

et al. 2008

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“…This result can be attributed to two overlapped peaks, i.e. the (0 0 2) reflection of the pillared clay and the (0 0 1) reflection corresponding to the intercalation of a proportion of monomeric species of small size, thus leading to smaller openings of the clay layers [25].…”

Section: Iron-pilc Identificationmentioning

confidence: 97%

Photo-Fenton oxidation of phenolic compounds catalyzed by iron-PILC

Campo

Romero

Roa‐Morales

et al. 2014

Fuel

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“…p-Complexation adsorbent (Cheng and Yang 1995;Cho et al 2005) is a type of highly selective adsorbents to separate k electron-containing adsorbate from mixtures, such as olefin/paraffin separation and purification (Takahashi et al 2002) and organosulfur removal from fuels (Yang et al 2003(Yang et al , 2008, etc. p-complexation bonds are generally stronger than van der Waals and electrostatic interactions, and thus give rise to higher selectivities (Yang et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Preparation of CuCl@AC with high CO adsorption capacity and selectivity from CO/N2 binary mixture

Huang

et al. 2015

Adsorption

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The objective of this work is to develop CuCl@AC adsorbent with high CO capacity and selectivity from CO/N 2 binary gas mixture. A series of CuCl@AC adsorbents were prepared by a solid-state auto dispersion method, and then characterized by N 2 adsorption test, XRD and XPS. CO and N 2 adsorption isotherms on the adsorbents were measured by a volumetric method. The adsorption isotherms and selectivities of CuCl@AC adsorbents for CO/N 2 binary mixture were estimated on the basis of ideal adsorbed solution theory (IAST). Results showed that (a) CO uptakes of CuCl@AC increased with CuCl loading in the loading range of 0-1.2 g/g. The maximal CO adsorption capacity of the CuCl@AC with CuCl loading of 1.2 g/g reached 38 cc/g at the P/P 0 of 0.40, around 8 times of that over the original AC; (b) calcination time for the preparation of Cu(I)@AC had significantly impact on CO adsorption of the adsorbents due to valence change of Cu species on carbon surfaces. XPS analysis indicated that when the calcination time was optimized to be 1 h at 350°C under argon, the prepared Cu(I)@AC had the highest percentage of Cu ? species on its surfaces, and consequently it had the highest CO capacity among the adsorbents since adsorptive species responsible for CO adsorption is Cu ? ; (c) The IAST-predicted CO/N 2 adsorption selectivities of 1.2CuCl/AC decreased with pressure. Its CO/N 2 selectivity was up to 100-450 at low pressure range of 0-10 kPa, and it remained in the range of 50-100 at higher pressure range of 20-100 kPa. The high adsorption capacity and selectivity of Cu(I)@AC adsorbents made it a promising adsorbent for CO/N 2 mixture separation.

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Monolayer cuprous chloride dispersed on pillared clays for olefin-paraffin separations by ?-complexation

Cited by 62 publications

References 15 publications

Propylene/propane mixture adsorption on faujasite sorbents

Propylene/propane mixture adsorption on faujasite sorbents

Photo-Fenton oxidation of phenolic compounds catalyzed by iron-PILC

Preparation of CuCl@AC with high CO adsorption capacity and selectivity from CO/N2 binary mixture

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