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Phillips catalyst - Wikipedia
The Phillips catalyst, or the Phillips supported chromium catalyst, is the catalyst used to produce approximately half of the world's polyethylene. A heterogeneous catalyst, it consists of a chromium oxide supported on silica gel. Polyethylene, the most abundant synthetic polymer, is produced industrially by the polymerization of ethylene: WebChromium is added to the catalyst to stabilize the catalyst activity over time and to delay sintering of iron oxide. Sintering will decrease the active catalyst area, so by decreasing the sintering rate the lifetime of the catalyst will be extended. The catalyst is usually used in pellets form, and the size play an important role. WebFeb 21, 2011 · Chromium plating has been carried out on a commercial basis since 1924. In decorative applications, the chrome is plated as a thin (0.25–0.8 μm) layer over nickel to provide an economical and highly … saphe one+ pricerunner