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Aim The aim of this research was to prepare the 4-hole cylindrical shaped calcium aluminate catalyst supports, which are used in Methane Steam Reforming process for hydrogen production. Introduction Steam Reforming of methane is widely used in refineries and petrochemical industries and petrochemical industries to produce hydrogen. The catalyst used for this process is nickel on aluminas (i.e., alfa-alumina, calcium aluminate or magnesium aluminate) promoted with alkaline metal. Apart from chemical composition, geometrical shape of the catalyst also plays an important role in overall performance of the catalyst. For example, the 4-hole shaped supports in comparison with Rasching ring supports offer the following improvement in reformer operation. Conduct Pressing technique was used to shape the free flowing powders into a 4-hole cylindrical shape catalyst supports. A number of techniques and methods such as XRD, XRF, SEM, BET, mercury porosimetry and crushing strength were used to characterize the supports. Achievements Catalyst support with optimum properties for use in steam reforming process was obtained. The layered structure of Hibonite-phase formed during the sintering affect the surface area and mechanical strength of the support.
Properties of Calcium Aluminate Catalyst Supports
Form | Diameter (mm) | Length(mm) | Hole Size (mm) | Average Crush Strength (radial) (kgf) | Surface Area (m2/g) | Pore Volume (cc/g) | 4-hole Cylinder | 14 | 17 | 3.8 | 60-100 | 0.5-4 | 0.1-0.35 |
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