Steam methane reforming performance of Ni/Al2O3 composite catalysts prepared via a hydrothermal-infiltration method
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This paper describes the effect of the ratio of two starting materials, eggshell (ES, source of Ca) and rice husk (RH, sourceof silica) on the direct synthesis of wollastonite via a facile two-step solid state method, i.e. ball milling of the raw materialsfollowed by calcination of the mixture at 1,000 oC. The investigation was focused on optimizing the ratio of ES and RH tomaximize the formation of wollastonite. Keeping the wt.% of RH constant, four different ratios of RH and ES (10:2.6, 10:3.0,10:3.3 and 10:3.7) were used and the observed result revealed that the initial ratio of RH and ES plays a key role in controllingthe formation of wollastonite as the major phase which was confirmed by x-ray diffraction (XRD) and Fourier TransformInfrared (FT-IR) techniques. The bioactive property of this wollastonite was studied in simulated body fluid at 37 oC while thetime dependent growth of hydroxyapatite (HA) on the surface of wollastonite was examined by SEM and XRD. Observed datasupported the bioactive nature of wollastonite as biomaterial
Abstract
This paper describes the effect of the ratio of two starting materials, eggshell (ES, source of Ca) and rice husk (RH, sourceof silica) on the direct synthesis of wollastonite via a facile two-step solid state method, i.e. ball milling of the raw materialsfollowed by calcination of the mixture at 1,000 oC. The investigation was focused on optimizing the ratio of ES and RH tomaximize the formation of wollastonite. Keeping the wt.% of RH constant, four different ratios of RH and ES (10:2.6, 10:3.0,10:3.3 and 10:3.7) were used and the observed result revealed that the initial ratio of RH and ES plays a key role in controllingthe formation of wollastonite as the major phase which was confirmed by x-ray diffraction (XRD) and Fourier TransformInfrared (FT-IR) techniques. The bioactive property of this wollastonite was studied in simulated body fluid at 37 oC while thetime dependent growth of hydroxyapatite (HA) on the surface of wollastonite was examined by SEM and XRD. Observed datasupported the bioactive nature of wollastonite as biomaterial
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