Process for producing adamantane or analogue
View Patent ↗The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein water and/or alcohol is made to coexist along with the catalyst during the isomerization.
1. A method for producing adamantanes by isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein water and/or alcohol is made to coexist along with the catalyst during the isomerization.
2. The method for producing adamantanes as claimed in claim 1 , wherein the metal of the metal-carrying solid acid catalyst is a metal of Groups 8 to 10 of the Periodic Table.
3. The method for producing adamantanes as claimed in claim 2 , wherein the metal of Groups 8 to 10 of the Periodic Table is platinum.
4. The method for producing adamantanes as claimed in claim 2 , wherein the metal-carrying solid acid catalyst is a catalyst of a metal of Groups 8 to 10 of the Periodic Table supported on a zeolite.
5. The method for producing adamantanes as claimed in claim 1 , wherein the metal-carrying solid acid catalyst is a solid acid catalyst of platinum supported on a Y-type zeolite.
6. The method for producing adamantanes as claimed in claim 1 , wherein the isomerization reaction occurs in the additional presence of an unsaturated bond containing compound.
7. The method for producing adamantanes as claimed in claim 6 , wherein said unsaturated bond-containing compound is a monocyclic saturated hydrocarbon.
8. The method for producing adamantanes as claimed in claim 6 , wherein the isomerization reaction occurs in the additional presence of a monocyclic saturated hydrocarbon.
9. A method for producing adamantanes, comprising:
isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms, as the tricyclic saturated hydrocarbon having water and/or alcohol mixed therewith contacts a Group 8 to 10 metal-carrying solid acid catalyst.
10. The method for producing adamantanes as claimed in claim 1 , wherein the tricyclic saturated hydrocarbon having at least 10 carbon atoms is a compound selected from the group consisting of trimethylenenorbornane [tetrahydrodicyclopentadiene], perhydroacenaphthene, perhydrofluoren, perhydrophenalene, 1,2-cyclopentanperhydronaphthalene, perhydroanthracene and perhydrophenanthrene.
11. The method for producing adamantanes as claimed in claim 1 , wherein the metal of the metal-carrying solid acid catalyst selected from the group consisting of iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum.
12. The method for producing adamantanes as claimed in claim 4 , wherein said zeolite is a member selected from the group consisting of A-type zeolite, L-type zeolite, X-type zeolite, Y-type zeolite and ZSM-5.
13. The method for producing adamantanes as claimed in claim 1 , wherein the amount of water and/or alcohol is mixed with the tricyclic saturated hydrocarbon in a ratio ranging from 1:10000 and 2:1 by weight.
14. The method for producing adamantanes as claimed in claim 13 , wherein said ratio ranges from 1:1000 and 1:1.