Kinetic and thermodynamic studies of hydrogen adsorption on titanate nanotubes decorated with a Prussian blue analogue

Zamora, B.; Al-Hajjaj, A. A.; Shah, Akeel A.; Bavykin, Dmitry V.; Reguera, E.

doi:10.1016/j.ijhydene.2013.02.031

Cited by 8 publications

(11 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…External diffusion occurs faster than internal diffusion. 33 The important kinetic parameters are summarized in Table 3. Table 3 shows that the CO 2 adsorption taken at temperatures of 30 C and 40 C follows the pseudo-second order as it has the biggest R 2 value.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

2018

View full text Add to dashboard Cite

show abstract

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

2018

View full text Add to dashboard Cite

show abstract

Section: ■ Introductionmentioning

confidence: 99%

“…In addition, to provide an understanding of the adsorption mechanism, the kinetic study of hydrogen adsorption would be necessary [22]. Zamora et al [22] studied the kinetic hydrogen adsorption on the composite comprising TiNT decorated with Cd3Fe III by implementing the intra-particle diffusion model. Furthermore, thermodynamic aspects such as enthalpy, entropy, and Gibbs free energy are other main factors to be considered in the adsorption process in order to determine the feasibility of ZTC for H2 storage purpose.…”

Section: ■ Introductionmentioning

confidence: 99%

Hydrogen Adsorption Characteristics for Zeolite-Y Templated Carbon

et al. 2019

View full text Add to dashboard Cite

The hydrogen adsorption, kinetic and thermodynamic of adsorption onto the zeolite templated carbon (ZTC) were examined at the temperature range of 30-50 °C and ambient pressure. The ZTC was prepared from zeolite-Y template and sucrose carbon precursor by impregnation method and showed its specific surface area of 932 m2/g as well as 0.97 cm3/g for total pore volume. Analysis of physical and chemical characteristics for materials were performed using XRD, SEM, TEM and N2 isotherm. The results indicated that the ZTC has some ordered network structure of carbon and also exhibits the formation of carbon layer outside the zeolite micropore. We observed the ZTC for hydrogen adsorption both gravimetric and volumetric method up to 1.72 and 1.16 wt.% at the lowest temperature, respectively. The kinetic process at all studied temperature was best approximated by pseudo second order kinetic model. The aspects of thermodynamic such as heat of adsorption and the entropy change were -14.41 kJ/mol and -40.93 J/K mol, respectively. Both values was negative, indicating an exothermic reaction and low disorder at the hydrogen and ZTC interface, when the adsorption process took place. While, the enthalpy change value exhibits characteristic of physical process. The Gibbs energy change calculated at 30, 40 and 50 °C were -1.99, -1.59 and -1.19 kJ/mol, respectively, indicating a spontaneous adsorption process.

show abstract

“…Some members of this family also have a high density of open metal sites on their pores walls [11], and others have exchangeable metal cations [20][21][22]. Open metal sites and exchangeable metal cations are specific adsorption centers with intense field gradients to interact with quadrupole molecules of great technological interest, such as: H 2 [23,24], CO 2 [25], O 2 [21] and N 2 [21]. These features have proven to be useful in combustion exhaust gas purification [26] and oxygen and nitrogen air enrichment [21].…”

Section: Introductionmentioning

confidence: 99%

Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

et al. 2017

View full text Add to dashboard Cite

Transition metal hexacyanocobaltates are porous materials with open metal sites and a wide variety of pores. In this work, manganese(II) and cobalt(II) hexacyanocobaltates(III) have been selected to explore the interactions between the open metal sites located in their pores and the guest molecules: hydrogen, carbon dioxide, water and methanol. An experimental setup was designed and implemented to conduct post-synthesis modification of the solids with ozone. Samples were dehydrated, ozonized and saturated with methanol in situ. Ozone molecules acted on the open metal sites changing their oxidation state, causing a contraction of the unit cell and inducing a stronger interaction of the molecules of water and methanol with the lattice. This strengthening prevented the lattice from being evacuated without compromising its framework stability. The decomposition temperature decreased in all ozonized samples as a consequence of the elongation and weakening of the cobalt-carbon bond. Active infrared and Raman bands were used to monitor the interaction between the open metal sites at the framework surface and the guest molecules. The cell contraction and the presence of residual methanol molecules in the porosity reduced the hydrogen and carbon dioxide retention capacity of the samples.

show abstract

Kinetic and thermodynamic studies of hydrogen adsorption on titanate nanotubes decorated with a Prussian blue analogue

Cited by 8 publications

References 35 publications

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

Hydrogen Adsorption Characteristics for Zeolite-Y Templated Carbon

Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

Contact Info

Product

Resources

About

Kinetic and thermodynamic studies of hydrogen adsorption on titanate nanotubes decorated with a Prussian blue analogue

Cited by 8 publications

References 35 publications

Adsorption–desorption of CO2 on zeolite-Y-templated carbon at various temperatures

Adsorption–desorption of CO2 on zeolite-Y-templated carbon at various temperatures

Hydrogen Adsorption Characteristics for Zeolite-Y Templated Carbon

Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

Contact Info

Product

Resources

About

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures