The role of catalyst poisons during hydrodeoxygenation of renewable oils
Journal article, 2021

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.

Hydrodeoxygenation

HDO

Stability

Biofuels

Deactivation

Author

Prakhar Arora

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Process and Reaction Engineering

Preem

Hoda Abdolahi

Student at Chalmers

You Wayne Cheah

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Process and Reaction Engineering

Muhammad Abdus Salam

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Process and Reaction Engineering

Eva Lind Grennfelt

Preem

Henrik Rådberg

Preem

Derek Creaser

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Process and Reaction Engineering

Louise Olsson

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Catalysis Today

0920-5861 (ISSN)

Vol. 367 28-42

Alternative fuel production using bio-oils from the forest sector -Fundamental studies of catalyst deactivation

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

Subject Categories

Chemical Process Engineering

Other Chemical Engineering

Organic Chemistry

DOI

10.1016/j.cattod.2020.10.026

More information

Latest update

5/19/2021