THE chromium–aluminium oxide catalyst system is one most commonly used in the aromatization of paraffinic hydrocarbons. In practice, mixtures containing up to 20 per cent chromium oxide are used, this ...
CHROMIUM oxide is used extensively as a catalyst, both as the pure oxide and as an essential component of various multicomponent systems. The unsupported chromium oxide gel usually undergoes a ...
With what it takes to make synthetic diamonds – the crushing pressures, the searing temperatures – you’d think similar conditions would be needed for any synthetic gemstone. Apparently not, though, as ...
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