Catalyst, a process for preparing the catalyst and a process for the production of an olefin oxide, a 1,2-diol, a 1,2 diol ether, or an alkanolamine
CAFCFirst Claim
1. A catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises at least 85 weight percent α
- -alumina and has a surface area of at least 1.3 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m.
2 Assignments
1 Petition
Accused Products
Abstract
A catalyst which comprises a carrier and silver deposited on the carrier, which carrier has a surface area of at least 1.3 m2/g, a median pore diameter of more than 0.8 μm, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μm and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μm is contained in pores with diameters in the range of from 0.3 to 10 μm; process for the preparation of a catalyst which process comprises depositing silver on a carrier, wherein the carrier has been obtained by a method which comprises forming a mixture comprising: a) from 50 to 95 weight percent of a first particulate a-alumina having a median particle size (d50) of from 5 to 100 μm; b) from 5 to 50 weight percent of a second particulate a-alumina having a d50 which is less than the d50 of the first particulate a-alumina and which is in the range of from 1 to 10 μm; and c) an alkaline earth metal silicate bond material; weight percent being based on the total weight of a-alumina in the mixture; and firing the mixture to form the carrier; a process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a said catalyst; and a process for preparing a 1,2-diol, a 1,2-diol ether or an alkanolamine.
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Citations
28 Claims
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1. A catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises at least 85 weight percent α
- -alumina and has a surface area of at least 1.3 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- -alumina and has a surface area of at least 1.3 m2/g, a median pore diameter of more than 0.8 μ
-
19. A catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises a bond material and at least 85 weight percent α
- -alumina, and has a surface area of at least 1 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m. - View Dependent Claims (20)
- -alumina, and has a surface area of at least 1 m2/g, a median pore diameter of more than 0.8 μ
-
21. A catalyst comprising a carrier and silver deposited on the carrier, which carrier is in the form of formed bodies fired at a temperature of at least 1250°
- C. comprising at least 85 weight percent α
-alumina, and has a surface area of at least 1 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m.
- C. comprising at least 85 weight percent α
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22. A catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises at least 85 weight percent α
- -alumina and has a non-platelet morphology, a surface area of at least 1 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m.
- -alumina and has a non-platelet morphology, a surface area of at least 1 m2/g, a median pore diameter of more than 0.8 μ
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23. A catalyst comprising a carrier and silver deposited on the carrier, which carrier has a surface area of at least 1 m2/g, a water absorption of at most 0.6 g/g, a median pore diameter of more than 0.8 μ
- m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m.
- m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
-
24. A process for the preparation of a catalyst, which process comprises:
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a) selecting a carrier which has a surface area of at least 1.3 m2/g, a median pore diameter of more than 0.8 μ
m, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μ
m and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μ
m is contained in pores with diameters in the range of from 0.3 to 10 μ
m, andb) depositing silver on the carrier. - View Dependent Claims (25, 26, 27, 28)
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Specification