ZrCe-SBA-15-NiMo Hydrodesulfurization catalyst

Patent metadata

Field	Value
Publication number	US-11413606-B2
Application number	US-202016811550-A
Country	US
Kind code	B2
Filing date	Mar 6, 2020
Priority date	Aug 5, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A robust catalyst useful for hydrodesulfurization (HDS) of sulfur-containing hydrocarbons such as sulfur-containing diesel fuel. The catalyst contains a modified mesoporous silica, such as SBA-15, Zr atoms, Ni, Mo, Ce atoms. A method for removing sulfur from a hydrocarbon, such as diesel fuel or a refinery feedstock using the catalyst. A one-pot method for making the catalyst.

First claim

The invention claimed is:

1. A catalyst, comprising:
mesoporous silica doped with Ce, Zr, Mo, and Ni, and further comprising Zr and Ce atoms;
wherein the mesoporous silica comprises Santa Barbara Amorphous-15 (“SBA-15”),
wherein Zr is present in an amount of 1.0 wt. % to 6 wt. % and Ce is present in an amount of 0.5 wt. % to 2.5 wt. %, each relative to the weight of the catalyst.

2. The catalyst of claim 1 that has not been calcined.

3. The catalyst of claim 1 that has been presulfided.

4. The catalyst of claim 1 , wherein a molar ratio of Zr to Ce ranges from 2: 1 to 40:1.

5. The catalyst of claim 1 , wherein Zr is present in an amount of 2.0 wt. % to 4 wt. % and Ce is present in an amount of 1 wt. % to 2.0 wt. % each relative to the weight of the catalyst.

6. The catalyst of claim 1 , which comprises 10 to 16 wt % Mo and 1 to 6 wt % Ni based on the weight of the catalyst.

7. A catalyst, comprising:
mesoporous silica doped with of Ce, Zr, Mo, and Ni, and further comprising Zr and Ce atoms,
wherein the mesoporous silica comprises Santa Barbara Amorphous-15 (“SBA-15”),
wherein Zr is present in an amount of 1.0 wt. % to 6 wt. %,
Ce is present in an amount of 0.5 wt. % to 2.5 wt. %,
Mo is present in an amount of 12 to 14 wt %, and
Ni is present in an amount of 4 to 5 wt % based on the weight of the catalyst.

8. The catalyst of claim 1 that has a BET surface area ranging from 300.9 to 332.6 m 2 /g, a microporous surface area ranging from 32.1 to 35.5 m 2 /g, and/or an external surface area ranging from 269 to 297 m 2 /g.

9. The catalyst of claim 1 that has a microporous pore volume ranging from 0.016 to 0.018 cm 3 /g; a total pore volume ranging from 0.49 to 0.54 cm 3 /g;
and/or an average pore size ranging from 5.56 to 6.14 nm.

10. The catalyst of claim 1 that has a BET surface area ranging from 300.9 to 332.6 m 2 /g; a microporous surface area ranging from 32.1 to 35.5 m 2 /g; an external surface area ranging from 269 to 297 m 2 /g; a microporous pore volume ranging from 0.016 to 0.018 cm 3 /g; a total pore volume ranging from 0.49 to 0.54 cm 3 /g; and an average pore size ranging from 5.56 to 6.14 nm.

11. The catalyst of claim 10 that has been presulfided.

12. The catalyst of claim 1 , wherein distribution of Lewis acid sites ranges from about 457 to about 505 and/or the distribution of Bronsted acid sites ranges from 800 to 870, as determined by pyridine FTIR analysis.

13. The catalyst of claim 1 , wherein Ni and Mo are homogeneously dispersed on the mesoporous silica and their individual metal crystallite peaks are not detectable by X-ray diffraction.

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Alhooshani Khalid R
• Ganiyu Saheed Adewale
• Tanimu Abdulkadir

Classifications

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J35/80

  characterised by their amorphous structures · CPC title

• B01J35/34

  Mechanical properties · CPC title

• B01J35/30

  characterised by their physical properties · CPC title