Synthetic magnesia manufacturers

Commercial production of synthetic silica-alumina catalysts for use in fluid cracking was initiated in 1942. The synthetic catalysts were first manufactured in ground form, but means were later developed for production in MS (micro-spheroidal) form. First shipments of the MS catalyst were made in 1946. The synthetic catalysts contain 10 to 25% alumina. Synthetic silica-magnesia catalyst has also been used commercially in fluid-catalyst units (19,100). Magnesia content is 25 to 35% as MgO (276). 

Magnesia has been identified by Newton and Sharp (1987) in certain plasters, introduced with the dolomite used. The synthetic analogue for periclase, magnesimn oxide, generally manufactured from limestone starting materials is used as a paint extender. 

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