摘要:
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.
摘要:
A process for preparing a 1,2-diol, a 1,2-diol ether or an alkanolamine comprising converting an olefin oxide, wherein the olefin oxide has been obtained by a process for the epoxidation of an olefin, said process comprising using a catalyst comprising a carrier and silver deposited thereon, wherein the 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 μm, and a pore size distribution wherein at least 80% of the total pore 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.
摘要:
The invention provides a process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin and oxygen in the presence of 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 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.
摘要:
A catalyst which comprises a carrier and silver deposited on the carrier, which carrier has a surface area of at least 1 m2/g, and a pore size distribution such that pores with diameters in the range of from 0.2 to 10 μm represent at least 70% of the total pore volume and such pores together provide a pore volume of at least 0.27 ml/g, relative to the weight of the carrier; a 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 90% w of a first particulate α-alumina having an average particle size (d50) of from more than 10 up to 100 μm; and b) from 10 to 50% w of a second particulate α-alumina having an average particle size (d50) of from 1 to 10 μm; % w being based on the total weight of α-alumina in the mixture; and shaping the mixture into formed bodies and firing the formed bodies to form the carrier, and a process for the epoxidation of an olefin, which process comprises reacting an olefin with oxygen in the presence of a said catalyst.
摘要:
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.
摘要:
The invention provides a process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin and oxygen in the presence of 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 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.
摘要:
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.