The role of catalyst poisons during hydrodeoxygenation of renewable oils
Artikel i vetenskaplig tidskrift, 2020

Hydrodeoxygenation (HDO) activity of NiMo catalysts have been evaluated in the presence of catalyst poisons in bio-based feedstocks. An in-house synthesized NiMo/Al2O3 catalyst was placed in a refinery unit for biofuel production. Iron (Fe), phosphorus (P) and metals were identified as major contaminants. Calcination treatment was explored to recover the activity of spent catalysts. The effect of Fe, K and phospholipid containing P and Na on catalyst deactivation during hydrodeoxygenation of stearic acid was simulated at lab-scale. Fe caused the most deactivation where the highest feed concentration of the Fe compound resulted in 1480 ppm Fe deposited on the catalyst. Elemental distribution along the radial axis of spent catalysts indicated: Fe deposited only to a depth of 100 μm irrespective of concentration while P and Na from phospholipid and K penetrated deeper in catalyst particles with a distribution profile that was found to be concentration dependent.

HDO

Biofuels

Hydrodeoxygenation

Deactivation

Stability

Författare

Prakhar Arora

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Preem AB

Hoda Abdolahi

Student vid Chalmers

You Wayne Cheah

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Muhammad Abdus Salam

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Eva Lind Grennfelt

Preem AB

Henrik Rådberg

Preem AB

Derek Creaser

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Louise Olsson

Chalmers, Kemi och kemiteknik, Kemiteknik

Catalysis Today

0920-5861 (ISSN)

Vol. In Press

Alternativbränsleproduktion med användandet av biooljor från skogssektorn - Fundamentala studier av katalysatordeaktivering

Formas, 2014-01-01 -- 2018-12-31.

Ämneskategorier

Kemiska processer

Annan kemiteknik

Organisk kemi

DOI

10.1016/j.cattod.2020.10.026

Mer information

Senast uppdaterat

2020-12-21