Claims
- 1. A process for conversion of aromatic hydrocarbons, which comprises bringing feedstock containing from 5 to 50% by weight of an aromatic hydrocarbon having an ethyl group and a C.sub.9 alkyl aromatic hydrocarbon into contact with a catalyst capable of disproportionation, trans-alkylation and dealkylation, in the presence of hydrogen, a secondary particle diameter of a zeolite in the catalyst being 10 .mu.m or less.
- 2. The process of claim 1, wherein the aromatic hydrocarbon having the ethyl group is contained in an amount of from 8 to 50% by weight.
- 3. The process of claim 1 or 2, wherein the secondary particle diameter of the zeolite is 5 .mu.m or less.
- 4. The process of claim 1, wherein the zeolite is mordenite.
- 5. The process of claim 1, wherein the catalyst contains mordenite, an inorganic oxide and/or clay and at least one metal selected from metals belonging to the VIB, VIIB and VIII Groups.
- 6. The process of claim 5, wherein at least one metal selected from metals belonging to the VIB, VIIB and VIII Groups is rhenium.
- 7. The process of claim 6, wherein the amount of rhenium is between 0.001 and 5% by weight as element.
- 8. The process of claim 6, wherein the amount of rhenium is between 0.02 and 1% by weight as element.
- 9. The process of claim 1, wherein the zeolite is a hydrogen-type zeolite.
- 10. The process of claim 4, wherein the silica to alumina molar ratio of mordenite is between 15 and 30.
- 11. The process of claim 5, wherein the inorganic oxide is at least one type selected from alumina, silica, silica-alumina, titania and magnesia.
- 12. The process of claim 11, wherein the inorganic oxide is alumina.
- 13. The process of claim 12, wherein alumina is alumina having a boehmite structure.
- 14. A process for conversion of aromatic hydrocarbons, which comprises bringing feedstock containing from 5 to 50% by weight of an aromatic hydrocarbon having an ethyl group and a C.sub.9 alkyl aromatic hydrocarbon into contact with a catalyst capable of disproportionation, trans-alkylation and dealkylation, a secondary particle diameter of a zeolite in the catalyst being 10 .mu.m or less, wherein the reaction is performed in the presence of hydrogen at a temperature of from 300 to 550.degree. C. and a pressure of from 1 to 6 MPa with WHSV of from 0.5 to 10 hr.sup.-1 at a hydrogen to aromatic hydrocarbon molar ratio of from 1 to 10.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-74587 |
Mar 1995 |
JPX |
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Parent Case Info
This is a continuation-in-part of application Ser. No. 08/955,870, filed Oct. 22, 1997, now U.S. Pat. No. 5,847,256, which is a continuation of application Ser. No. 08/608,187, filed Feb. 28, 1996, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5847256 |
Ichioka et al. |
Dec 1998 |
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Foreign Referenced Citations (3)
Number |
Date |
Country |
939389 |
Jan 1974 |
CAX |
A-20 05 820 |
Sep 1970 |
DEX |
A-55 164 631 |
Dec 1980 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
608187 |
Feb 1996 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
955870 |
Oct 1997 |
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