초록 ▼

A method of preparing, preferably recycling, a catalyst support material is disclosed and is particularly applicable to recycling a titania support. The invention includes crushing the used catalyst support that is obtained by leaching catalytic components from a used supported catalyst and preferab

A method of preparing, preferably recycling, a catalyst support material is disclosed and is particularly applicable to recycling a titania support. The invention includes crushing the used catalyst support that is obtained by leaching catalytic components from a used supported catalyst and preferably combining it with new catalyst support in order to provide the required average particle size and ratio of crystal phases. The invention has a number of benefits including making use of used catalyst support materials which have been conventionally disposed of and also providing a method to more efficiently recycle the active component. Where the support is recycled for a similar application, less promoter may be required.

대표청구항 ▼

We claim: 1. A method of preparing a catalyst support material, the method comprising: obtaining a used catalyst support material by leaching at least 50 wt % of the catalytic components from a used supported catalyst, crushing said catalyst support material, such that some or all of the crushed ma

We claim: 1. A method of preparing a catalyst support material, the method comprising: obtaining a used catalyst support material by leaching at least 50 wt % of the catalytic components from a used supported catalyst, crushing said catalyst support material, such that some or all of the crushed material is reusable as a catalyst support material, and admixing some or all of the crushed material with new catalyst support material. 2. A method as claimed in claim 1, wherein the used catalyst support material is a crystalline catalyst support material. 3. A method as claimed in claim 1, wherein the used catalyst support material is a refractory oxide material selected from the group consisting of titania, zirconia, α-alumina and γ-alumina. 4. A method as claimed in claim 1, wherein the used catalyst support material comprises a first ratio of anatase:rutile titania, the new catalyst support material has a second ratio of anatase:rutile titania, and the combined catalyst support material has a third target ratio of anatase:rutile titania. 5. A method as claimed in claim 1, wherein the used catalyst support material is calcined. 6. A method as claimed in claim 1, wherein the used catalyst support material is obtained by leaching at least 80 wt % of the catalytic components from the used supported catalyst. 7. A method as claimed in claim 1, wherein the used catalyst support is selected from the group consisting of silica, titania and alumina, and the catalytic component is an iron or cobalt component. 8. A method as claimed in claim 1, further comprising determining the amount of active catalyst component remaining on the used catalyst support prior to combining with new catalyst support material. 9. A method as claimed in claim 1, wherein the used catalyst support material is obtained by leaching at least 90% of the catalytic components from the used supported catalyst. 10. A method as claimed in claim 1, wherein the catalytic components include a Group VIII metal component. 11. A method as claimed in claim 10, wherein the Group VIII metal component is selected from the group consisting of iron, cobalt and nickel.