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Limitations on hydrofinishing can be posed by the feed. Those that contain high levels of polyaromatics and nitrogen compounds can cause catalyst deactivation by adsorption on the active sites. If catalyst temperatures have to be increased too much, the low operating pressure of these processes can lead to... [Pg.167]

See other pages where Polyaromatic and nitrogen is mentioned: [Pg.233] [Pg.6] [Pg.100] [Pg.186]