fulltext.study @t Gmail

Effect of pore size distribution (PSD) of Ni-Mo/Al2O3 catalysts on the Saudi Arabia vacuum residuum hydrodemetallization (HDM)

Paper ID Volume ID Publish Year Pages File Format Full-Text
53532 46973 2016 9 PDF Available
Title
Effect of pore size distribution (PSD) of Ni-Mo/Al2O3 catalysts on the Saudi Arabia vacuum residuum hydrodemetallization (HDM)
Abstract

•The relationship between the pore size distribution (PSD) and the HDM activity has been connected. The catalysts showed good activity of removing metal nickel (Ni) and vanadium (V) when they contain 10–20 nm pores, but the catalysts with both 10–20 and >100 nm pores have higher activity of removing metal V.•The effect of catalyst PSD on the removal of different metal compounds were also studied by analyzing different metal compounds distribution in its hydrotreated products oil. Both Ni and V compounds of small molecular size in the methanol extract and middle molecular size in the dimethylformatmide (DMF) extracts can be easily removed on the catalysts. However, most of the large molecular V and Ni compounds in the toluene extracts were the most resistant to be removed in the vacuum residuum hydrodemetallization.•The large molecular V and Ni compounds have different removal rules on the different pore size distribution. Large molecular V compounds in the toluene extracts can be hydrodemetallized effectively on the catalysts with macropore size (>100 nm) distribution. While catalysts with mesopore size distribution (10–20 nm) shows a higher HDNi activity for the large molecular Ni compounds in the toluene extracts.

To study the effect of pore size distribution (PSD) of Ni-Mo/Al2O3 catalysts on the hydrodemetallization (HDM) activity, catalysts with different PSD were prepared using activated carbon and ammonium bicarbonate as pore-expanding agents and the HDM reaction was carried out in a high pressure trickle-bed reactor and Saudi Arabia vacuum residuum as the feedstock. The catalysts showed good activity of removing metal nickel (Ni) and vanadium (V) when they contain 10–20 nm pores, but the catalysts with both 10–20 and >100 nm pores have higher activity of removing metal V. The effect of PSD on the removal of different metal compounds were also studied by analyzing different metal compounds distribution in its hydrotreated products. Both Ni and V compounds of small molecular size in the methanol extract and middle molecular size in the dimethylformatmide (DMF) extracts can be easily removed on the catalysts. However, most of the large molecular V and Ni compounds in the toluene extracts were the most resistant to be removed in the vacuum residuum hydrodemetallization. Large molecular V compounds in the toluene extracts can be hydrodemetallized effectively on the catalysts with macropore size (>100 nm) distribution. While catalysts with mesopore size distribution (10–20 nm) shows a higher HDNi activity for the large molecular Ni compounds in the toluene extracts. Catalyst with both 10–20 and >100 nm pore size distribution would be more appropriate for the Saudi Arabia vacuum residuum HDV and HDNi.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (128 K)Download as PowerPoint slide

Keywords
HDM; Pore size distribution (PSD); Vacuum residuum; Metal compounds distribution; Nickel (Ni); Vanadium (V)
First Page Preview
Effect of pore size distribution (PSD) of Ni-Mo/Al2O3 catalysts on the Saudi Arabia vacuum residuum hydrodemetallization (HDM)
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 271, 1 August 2016, Pages 179–187
Authors
, , , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us