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مجله مهندسی شیمی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • kinetics of hds and of the inhibitory effect of quinoline on hds of 4,6-dmdbt over a ni–mo–p/al2o3 catalyst: part i

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 517
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the kinetic effect of quinoline (q) and its reaction by-products, i.e. 1,2,3,4-tetrahydroquinoline (1,4-thq), decahydroquinoline (dhq) and orthopropylaniline (opa), on the hydrodesulfurization (hds) of 4,6-dimethyldibenzothiophene (4,6-dmdbt) was studied in the presence of a commercial nimop/al2o3 catalyst under operating conditions relevant to industrial applications. kinetic observations and modelling based on a langmuir–hinshelwood–hougen–watson (lhhw) mechanism, accounting for most of the observed q and 4,6-dmdbt by-products, indicated that q, 1,4-thq and dhq are the main hds reaction inhibitors, even at nitrogen concentrations as low as 25 ppm. to some extent q and 1,4-thq were adsorbed favorably on the hds catalytic active sites, being more reactive than most of the sulfur and nitrogen-containing molecules. besides, dhq was less reactive than q and 1,4-thq, despite a significant adsorption affinity on the hds catalytic active sites. as a consequence, q and 1,4-thq inhibited hds reactions at lower q conversions, whereas dhq inhibited them at higher q conversions.

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