Catalyst for removing organic halogen compounds, preparation method therefor and method for removing organic halogen compounds
First Claim
1. A method for removing organic halogen compounds, which method comprises the step of bringing a catalyst component into contact with organic halogen compounds, wherein the catalyst component comprises titanium oxide and "said titanium oxide having a bimodal pore distribution wherein the first group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 μ
- m and the second group of pores having a pore diameter distribution peak in a range of 0.1 to 0.8 μ
m with essentially all the pore volume of the titanium oxide being in said ranges".
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Abstract
The present invention provides a catalyst having excellent capability of removing organic halogen compounds such as dioxins, a method for preparing the catalyst, and a method for removing organic halogen compounds using the catalyst. A catalyst for removing organic halogen compounds comprises titanium oxide as a catalyst component and has pores including a group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 gm and another group of pores having a pore diameter distribution peak in a range of 0.1 to 0.8 μm. Another catalyst for removing organic halogen compounds comprises titanium oxide and a titanium-silicon composite oxide as catalyst components and has pores including a group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 μm and another group of pores having a pore diameter distribution peak in a range of 0.8 to 4 μm.
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Citations
31 Claims
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1. A method for removing organic halogen compounds, which method comprises the step of bringing a catalyst component into contact with organic halogen compounds, wherein the catalyst component comprises titanium oxide and "said titanium oxide having a bimodal pore distribution wherein the first group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 μ
- m and the second group of pores having a pore diameter distribution peak in a range of 0.1 to 0.8 μ
m with essentially all the pore volume of the titanium oxide being in said ranges". - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 26, 27)
- m and the second group of pores having a pore diameter distribution peak in a range of 0.1 to 0.8 μ
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13. A method for removing organic halogen compounds, which method comprises the step of bringing catalyst components into contact with organic halogen compounds, wherein one of the catalyst components comprises titanium oxide and the other catalyst component comprises a titanium-silicon composite oxide, "having a bimodal pore distribution wherein each of the catalyst components comprises two groups of pores, wherein the first group of pores has a pore diameter distribution peak in a range of 0.01 to 0.05 μ
- m and wherein the second group of pores has a pore diameter distribution peak in a range of 0.8 to 4 μ
m with essentially all the pore volume of the said components being in said ranges." - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 29)
- m and wherein the second group of pores has a pore diameter distribution peak in a range of 0.8 to 4 μ
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30. A method for removing organic halogen compounds, which method comprises the step of bringing a catalyst component into contact with organic galogen compounds wherein the catalyst component comprises titanium oxide, said titanium oxide having a bimodal pore distribution, wherein the first group of pores define a first pore diameter distribution curve and a first pore volume and wherein the second group of pores define a second pore diameter distribution curve and a second pore volume, with all of the pores and thus all of the pore volumes being on or under said two pore diameter distribution curves, wherein each of the pores of said first group of pores has a diameter in a range of about 0.01 to about 0.05 μ
- m, and wherein each of the pores of the second group of pores has a diameter in a range of about 0.1 to about 0.8 μ
m, with about 90% or more of the pore volumes of the titanium oxide being in ranges of exactly 0.01 to exactly 0.05 μ
m and exactly 0.1 to exactly 0.8 μ
m.
- m, and wherein each of the pores of the second group of pores has a diameter in a range of about 0.1 to about 0.8 μ
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31. A method for removing organic halogen compounds, which method comprises the step of bringing catalyst components into contact with organic halogen compounds, wherein one of the catalyst components comprises titanium oxide and the other catalyst components comprises a titanium-silicon composite oxide having a bimodal pore distribution, wherein each of the catalyst components comprises first and second groups of pores, wherein the first group of pores define a first pore diameter distribution curve and a first pore volume and wherein the second group of pores define a second pore diameter distribution curve and a second pore volume, with all of the pores and thus all of the pore volumes being on or under said first and second pore diameter distribution curves, wherein each of the pores of said first group of pores has a diameter ina range of about 0.01 to about 0.05 μ
- m and wherein each of the pores of said second group pores has a diameter in a range of about 0.8 to about 4 μ
m, with about 89% or more of the pore volumes of said components being in ranges of exactly 0.01 to exactly 0.05 μ
m and exactly 0.8 to exactly 4 μ
m.
- m and wherein each of the pores of said second group pores has a diameter in a range of about 0.8 to about 4 μ
Specification