MFI zeolites using DABCO and methylamine reagents
An oligomerization catalyst, oligomer products, methods for making and using same. The catalyst is synthesized MFI zeolite (ZSM-5) made from a combination of DABCO and methylamine (MEA) in the presence of Na cations.
1. An aluminosilicate gel, comprising:
1,4-diazabicyclo[2.2.2]octane (DABCO);
methylamine (MEA);
sodium cations (Na + );
a source of silicon (Si); and
a source of aluminum (Al).
2. The gel of claim 1 , wherein the DABCO is present in an amount of 2 wt % to about 20 wt %, based on a total weight of the gel.
3. The gel of claim 1 , wherein a ratio of DABCO to Si (DABCO:Si) is about 0.1 to about 1.0.
4. The gel of claim 1 , wherein the MEA is present in an amount of about 0.5 wt % to about 12 wt %, based on a total weight of the gel.
5. The gel of claim 1 , wherein a ratio of methylamine to silicon (MEA:Si) is about 0.1 to about 2.0.
6. The gel of claim 1 , wherein the sodium cations are present in an amount of about 0.1 wt % to about 2.0 wt %, based on a total weight of the gel.
7. The gel of claim 1 , wherein a ratio of Na + to Si (Na + :Si) is about 0.0001 to about 0.15.
8. The gel of claim 1 , wherein a ratio of Si to Al (Si:Al) is about 30 to about 100.
9. The gel of claim 1 , wherein the source of silicon is silica and the source of aluminum is alumina.
10. An aluminosilicate gel, comprising:
silica;
about 0.1 to about 1.0 grams of 1,4-diazabicyclo[2.2.2]octane (DABCO) per gram of silica;
about 0.1 to about 2.0 grams of methylamine (MEA) per gram of silica;
about 0.0001 to about 0.15 grams of sodium cations (Na + ) per gram of silica; and
about 0.014 to about 0.15 grams of alumina per gram of silica.
11. The gel of claim 10 , wherein the DABCO is present in an amount of 2 wt % to about 20 wt %, based on a total weight of the gel.
12. The gel of claim 10 , wherein the MEA is present in an amount of about 0.5 wt % to about 12 wt %, based on a total weight of the gel.
13. The gel of claim 10 , wherein the sodium cations (Na + ) are present in an amount of about 0.1 wt % to about 2.0 wt %, based on a total weight of the gel.
14. The gel of claim 10 , wherein a ratio of the sodium cations (Na + ) to Si (Na + :Si) is about 0.0001 to about 0.15, and a ratio of Si to Al (Si:Al) is about 30 to about 100.
15. A zeolite having a MFI framework made from an aluminosilicate gel comprising:
1,4-diazabicyclo[2.2.2]octane (DABCO);
methylamine (MEA);
sodium cations (Na + );
a source of silicon (Si); and
a source of aluminum (Al), wherein the zeolite has a ratio of Si to Al (Si:Al) of about 30 to about 100.
16. The zeolite of claim 15 , wherein the MFI framework has a Si:Al ratio of about 40 to 50.
17. The zeolite of claim 15 , wherein the percentage of Al atoms in a paired configuration is less than 20%.
18. The zeolite of claim 15 , wherein the MFI framework has a surface area of about 100 m 2 /g to about 600 m 2 /g.
19. The zeolite of claim 15 , wherein the MFI framework has a pore size of about 50 Å to about 500 Å.
20. The zeolite of claim 15 , wherein the aluminosilicate gel further comprises water.