Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph

Roque‐Malherbe, R.; Lozano, C.; Polanco, R.; Márquez, Francisco; Lugo, F.; Hernández‐Maldonado, Arturo J.; Primera-Pedrozo, José N.

doi:10.1016/j.jssc.2011.02.029

Cited by 8 publications

(18 citation statements)

References 44 publications

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“…Thereafter, with the relation: q iso (0.37) = 1.16 E were calculated the isosteric heat of adsorption ( Table 5). The results reported indicated that the tested modified zeolites shows similar values for the measured isosteric heat of adsorption; but greater than those value of the isosteric heat of adsorption reported also in the present paper for the ZSM-5 zeolite, also larger than those reported for a particle packing silica and a dealuminated Y zeolite (DAY) [34], Cd, Zn and Ni-nitroprussides [41] and Cu-nitroprusside [40] and a Ni-MOF [39] (Table 6), as well bigger than experimental isosteric adsorption heats measured for the adsorption carbon dioxide on MCM-41- [58], silicalite [59], Na clinoptilolite and K-clinoptilolite [60], Na-A [61] and Na-X and MOF-5 [62] and MOF-508b [63], but similar to measured isosteric heats of adsorption for the adsorption of carbon dioxide on sodium ferrerite (Na-FER) [64]. The previously described adsorption data indicated that the interaction of the carbon dioxide molecule with the modified zeolites is strong.…”

Section: Resultssupporting

confidence: 48%

“…These steps can be related, in sequence, to the removal of water physically adsorbed on the micropore and coordinated water, respectively [41]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This detector is based on a Bruker AXS compound silicon strip technology and increases measured intensities, without sacrificing resolution and peak shape. This together with the use of small scanning step resulted in high quality XRD profiles suitable for mathematical treatment [39][40][41].…”

Section: Characterization Methodsmentioning

confidence: 99%

“…Further, was studied the surface chemistry of the modified clinoptilolites and the interaction of carbon dioxide with the framework of the modified clinoptilolites, two synthetic ZSM-5 zeolites used for comparison and data previously obtained for the adsorption of carbon dioxide in amorphous silica and a dealuminated Y zeolite [34], a metal organic framework [39], and four nitroprussides [40,41] by applying diffuse reflectance Fourier transform infrared spectrometry (DRIFTS) and adsorption measurements with the help of an automatic adsorption analyzer. Finally an appropriate theoretical methodology for the analysis of the X-ray diffraction profiles and the adsorption data was applied [5,34,[39][40][41].…”

Section: Introductionmentioning

confidence: 99%

“…Finally an appropriate theoretical methodology for the analysis of the X-ray diffraction profiles and the adsorption data was applied [5,34,[39][40][41]. As far as we know the modification of clinoptilolite with HFSi to improve their adsorption properties had not been previously attempted.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Study of the Adsorption Space of Modified Clinoptilolites

Rolando¹,

Roque-Malherbe²,

Alba³

et al. 2013

JMSE-B

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Carbon dioxide (CO 2 ) adsorption is an important adsorbent characterization method and a significant industrial process. In separation and recovery technology, the adsorption of the CO 2 is important to reduce the concentration of this gas considered as one of the greenhouse gases. Natural zeolites, particularly clinoptilolite, are widely applied as adsorbents. In this regard, in the present research, the structure, composition and morphology of modified with hexafluorosilicate (HFSi) and orthophosphoric acid (H 3 PO 4 ) clinoptilolites were investigated by characterizations and measurements made with, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDAX) and gravimetric adsorption. Additionally, the surface Chemistry of the modified clinoptilolites was analyzed by applying diffuse reflectance fourier transform infrared spectrometry (DRIFTS). Further, the interaction of CO 2 within the adsorption space of these modified clinoptilolites and a synthetic ZSM-5 zeolite was studied with the help of adsorption measurements. After all, an appropriate theoretical methodology for the analysis of the XRD and adsorption data was applied. The calculated cell parameters of the tested are similar to those reported for a typical clinoptilolite of: a = 17.662 Ǻ, b = 17.911 Ǻ, c = 7.407 Ǻ and β = 116.40 The resolution of the TGA derivative profiles indicated the presence of two steps for water release, one of them represents the loss of majority of the water present in the micropores. This was evidenced as a broad peak centered at about 50 0 C for the CSW-HFSi-0.1, but at 100 °C for the samples CSW-HFSi-0.4. The SEM micrographs corresponding to the modified clinoptilolites, was evidenced that the CSW zeolite shows secondary particles exhibiting diameters from 3 to 40 μm, formed by primary clinoptilolite crystallites showing a crystallite size, Φ = 40 nm. The EDAX elemental analysis it can be demonstrated that the exchange process replaced about 85% of the charge compensating ions. The DRIFT spectra of the modified clinoptilolites, specifically, CSW-HFSi-0.1, show a narrow band at about: 3,740 cm -l corresponding to terminal silanol groups (Si-OH) and a band 3,600-3,650 cm -1 resulting from extra-framework Al-OH. With the precision of the measured micropore volumes related to the excellent fitting of the adsorption data by the D-R isotherm equation, it can be affirm that carbon adsorption took only place in the micropore region. The isosteric heat of adsorption calculated for the modified clinoptilolites was greater than those values reported of ZSM-5 zeolite, particle packing silica, dealuminated Y zeolite (DAY) Cd, Zn and Ni-nitroprussides and Cu-nitroprusside and a Ni-MOF. With the obtained result it can be concluded that the modified clinoptilolites with HFSi showed a quality as adsorbent comparable to commercial synthetic zeolites.

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Section: Resultssupporting

confidence: 48%

“…These steps can be related, in sequence, to the removal of water physically adsorbed on the micropore and coordinated water, respectively [41]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study of the Adsorption Space of Modified Clinoptilolites

Rolando¹,

Roque-Malherbe²,

Alba³

et al. 2013

JMSE-B

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Copper Nitroprusside-Based Electrochemical Sensor for Detection of Tryptophan

Sunon,

Rattanaumpa,

Phakhunthod

et al. 2023

J. Anal. Test.

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Synthesis, structural elucidation and carbon dioxide adsorption on Zn (II) hexacyanoferrate (II) Prussian blue analogue

Roque‐Malherbe

Lugo

Polanco

2016

Applied Surface Science

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In the course of the last years hexacyanoferrates have been widely studied; even though, the adsorption properties of Zn (II) hexacyanoferrate(II) (labeled here Zn-HII) has not been thoroughly considered. In addition, soft porous crystals, i.e., adsorbents that display structural flexibility have been, as well, extensively studied, however this property has not been reported for Zn (II) hexacyanoferrate(II). In this regard, the key questions addressed here were the synthesis and structural characterization of Zn-HII together with the investigation of their low (up to 1 Bar) and high pressure (up to 30 Bar) adsorption properties, to found if these materials show structural flexibility. Then, to attain the anticipated goals, structural characterizations were made with: X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive Xray analysis (EDAX), diffuse reflectance infrared Fourier transform spectrometry (DRIFTS) and thermo-gravimetric analysis (TGA), simultaneously, with the investigation of the adsorption of carbon dioxide. As a result of the research process we concluded that the Zn-HII displayed m Fm3 space group framework. Besides, the carbon dioxide adsorption investigation demonstrated the presence of the framework expansion effect together with an extremely high adsorption heat, properties that could be useful for the use of Zn(II) hexacyanoferrate(II) as an excellent adsorbent.

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Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph

Cited by 8 publications

References 44 publications

Study of the Adsorption Space of Modified Clinoptilolites

Study of the Adsorption Space of Modified Clinoptilolites

Copper Nitroprusside-Based Electrochemical Sensor for Detection of Tryptophan

Synthesis, structural elucidation and carbon dioxide adsorption on Zn (II) hexacyanoferrate (II) Prussian blue analogue

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