Phosphoric acid activation of Morrocan oil shale of Timahdit: Influence of the experimental conditions on yield and surface area of adsorbents

Ichcho, S.; Khouya, El Hassane; Abourriche, A.; Ezzine, M.; Hannache, Hassan; Naslain, R.; Pailler, R.

doi:10.1051/jp4:2005123013

Cited by 1 publication

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“…Some adsorbents are activated using zinc chloride as intercalation agent 10 . Phosphoric acid also shows good activation ability 11 . In addition, some researchers have reported methods other than chemical activation.…”

Section: Introductionmentioning

confidence: 99%

Influence of Some Intercalations on Activation of Pre-Baked Clay

Ahmad

Ullah

2009

J. Chil. Chem. Soc.

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We report on the influence of temperature, mixing ratio and holding time of NaOH & KOH intercalations on the surface area, micropore volume and micropore width of pre-baked clay samples. Pore size & surface area analyzer was used to measure the surface area, micropore volume and average pore width using Dubinin-Radushkevich (DR) method. A meaning full effect was observed when the temperature was increased from ambient up to 150 o C in case of both intercalating agents. Increasing temperature beyond 150 o C caused a decline in surface area generation even up to 750 o C. The results also show that mixing ratio has a positive effect on the porosity and the micropore surface area increases as the mixing ratio increases in case of both intercalating agents. The influence of holding time shows two different trends. In case of NaOH, the porosity increases as the time increases while in case of KOH, the porosity decreases as the time increases. SEM, EDX and XRD studies were also performed. The results show effective insertion of the sodium and potassium into the clay matrix thereby causing generation of porosity.

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Section: Introductionmentioning

confidence: 99%