Propylene oxide catalyst and use
View Patent ↗A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the crystallization is removed, the resulting product is treated with hydrogen to form active catalyst for propylene oxide production.
1. A process for the formation of catalyst for propylene oxide production which comprises:
a) forming TS-1 crystals by hydrothermal crystallization in the presence of an organic template,
b) recovering template containing TS-1 crystals from the hydrothermal crystallization,
c) incorporating noble metal with the recovered TS-1 crystals before or after spray drying step d),
d) spray drying the noble metal containing TS-1 to form particulate solids,
e) removing template from the spray dried particulate solids, and
f) reducing the particulate solids from which template has been removed to form active catalyst for propylene oxide production.
2. The process of claim 1 wherein a binder is incorporated with the TS-1 crystals recovered from step b) before deposition of the noble metal.
3. The process of claim 1 wherein a binder is incorporated with the TS-1 crystals recovered from step b) after deposition of the noble metal on the TS-1 crystals.
4. The process of claim 1 wherein noble metal deposition takes place after spray drying step d).
5. The process of claim 1 wherein a colloidal silica binder is incorporated with the TS-1 crystals recovered from step b).
6. The process of claim 1 wherein step f) is carried out by treatment with hydrogen.
7. The process of claim 1 wherein the template is tetrapropylammonium hydroxide.
8. The process of claim 1 wherein the noble metal is palladium.
9. The process of claim 1 wherein the noble metal is deposited by ion exchange in step c).
10. The process of claim 1 wherein template is removed by oxidative calcination.
11. The process of claim 1 wherein a binder having noble metal dispersed thereon is incorporated with the TS-1 crystals.