Adsorption and diffusion of C6 and C8 hydrocarbons in silicalite

Wu, Pingdong; Debebe, Atnaf; Hua, Yi

doi:10.1016/0144-2449(83)90199-9

Cited by 176 publications

(99 citation statements)

References 3 publications

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“…The maximum loading of each component has been measured by a separate adsorption study. The sorption capacity of n-hexane (7 molecules per unit cell), in agreement with earlier studies [48,[59][60][61] exceeds that of 2-methylpentane (4 molecules per unit cell). The latter value equals the number of channel intersections in the MFI pore system per unit cell.…”

Section: Influence Of Acid Sites On Diffusivity: a Comparison Of Silisupporting

confidence: 79%

Positron Emission Profiling: a Study of Hydrocarbon Diffusivity in MFI Zeolites

Hensen

Jong

Santen

2007

Adsorption and Diffusion

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Section: Influence Of Acid Sites On Diffusivity: a Comparison Of Silisupporting

confidence: 79%

Positron Emission Profiling: a Study of Hydrocarbon Diffusivity in MFI Zeolites

Hensen

Jong

Santen

2007

Adsorption and Diffusion

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“…Accordingly, the higher removal efficiency of o-xylene occurs at low temperatures in UV-GAC process. These findings have been confirmed by some studies (Wu et al, 1983;Zaitan et al, 2008), which can be justified based on physical adsorption of o-xylene on the surface of GAC. Indeed, the first phase for the reaction of o-xylene with UV is the adsorption of o-xylene on the surface of catalyst.…”

Section: Influence Of the Bed Temperaturesupporting

confidence: 72%

Photocatalytic abatement of o-xylene using adsorption enhanced ZnO/GAC catalyst in a continuous flow reactor: Catalytic potential, Fate of o-xylene and its by-products

2017

Global NEST Journal

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Photocatalytic abatement of o-xylene was investigated by immobilized ZnO on granular activated carbon (ZnO/GAC) under UV irradiation. Immobilization of ZnO increased the breakthrough time and removal capacity by 51 and 57%, respectively, in optimal conditions. The catalytic potential of the ZnO/GAC (86.5%) for o-xylene removal was far greater than simple GAC (13.5%), at the optimum condition. The maximum removal capacity with ZnO/GAC (3.12g o-xylene /gZnO/GAC) was observed at 100 °C, while the maximum removal capacity of simple GAC (1.37 g oxylene/g GAC) was observed a t 20 °C. The main intermediates of the o-xylene oxidation in photocatalytic process with GAC were methanoic acid, o-nitro-p-cresol, phenylmethanal, and methyl di-phenyl-methane. ZnO/GAC can highly catalyze the degradation of o-xylene in the presence of UV, with methanoic acid being the major intermediate desorbed from the bed. The results demonstrated that the ZnO/GAC is an efficient option for the removal of VOCs and biohazards emitted from industrial streams.

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“…A number of investigators have measured the equilibrium behavior of aromatics in silicalite (Wu et al, 1983; Pope, 1986; Shah et al, 1988; Zikanova et al, 1987). Others have been interested more in studying the transport properties of adsorbate in the channel network of silicalite (for example, Eic and Ruthven, 1989; Hayhurst and Paravar, 1988; van den Begin et al, 1989;Car0 et al, 1985).…”

Section: Introductionmentioning

confidence: 97%

Chromatographic study of alkanes in silicalite: Equilibrium properties

Hufton

Danner

1993

AIChE Journal

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Variations of perturbation chromatography were used to measure Henry's constants and equilibrium isotherms of various gases on silicalite. Three dgferent adsorbent samples were analyzed ( commercial powder and extruded pellets, and laboratory-synthesized crystals), and no discernable differences among the measured parameters were noted. Henry's constants for the linear alkanes were determined from isobaric and nonisobaric chromatography experiments. They were correlated successfully with temperature and the number of carbon atoms per adsorbate molecule. Isotherms were measured from concentration pulse or tracer/concentration pulse chromatography techniques. The Flory-Huggins version of the vacancy solution model was used to correlate pure gas isotherms and predict binary behavior successfully.

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Adsorption and diffusion of C6 and C8 hydrocarbons in silicalite

Cited by 176 publications

References 3 publications

Positron Emission Profiling: a Study of Hydrocarbon Diffusivity in MFI Zeolites

Positron Emission Profiling: a Study of Hydrocarbon Diffusivity in MFI Zeolites

Photocatalytic abatement of o-xylene using adsorption enhanced ZnO/GAC catalyst in a continuous flow reactor: Catalytic potential, Fate of o-xylene and its by-products

Chromatographic study of alkanes in silicalite: Equilibrium properties

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