Method for producing hydride using unsaturated compound having carbon number of 4 as raw material
View Patent ↗The present invention relates to a method for producing a hydride having a carbon number of 4, comprising contacting, in liquid phase, an unsaturated compound having a carbon number of 4 as a raw material with a solid catalyst obtained by loading a metal element belonging to Groups 9 to 11 of the long periodic table on a support, thereby performing hydrogenation to produce a corresponding hydride having a carbon number of 4, wherein hydrogenation is performed in the presence of, as a solvent, a 1,4-butanediol having a nitrogen component concentration of 1 ppm by weight to 1 wt % in terms of nitrogen atom.
1. A method for producing a hydride having a carbon number of 4, comprising contacting, in liquid phase, an unsaturated compound having a total carbon number of 4 as a raw material with a solid catalyst obtained by loading a metal element belonging to Groups 9 to 11 of the long periodic table on a support, and performing hydrogenation to continuously produce a corresponding hydride having a carbon number of 4, wherein the hydrogenation is performed in the presence of a solvent comprising 1,4-butanediol having a nitrogen component concentration of 1 ppm by weight to 1 wt % in terms of nitrogen atom, wherein the 1,4-butanediol is previously contacted with an anion exchange resin to adjust the nitrogen concentration in the 1,4-butanediol to be from 1 ppm by weight to 1 wt %.
2. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the support is at least one member of silica and diatomaceous earth.
3. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the unsaturated compound having a carbon number of 4 is 1,4-dihydroxy-2-butene and the corresponding hydride having a carbon number of 4 is at least one member of 2,-hydroxytetrahydrofuran and 1,4-butanediol.
4. A method for producing 1,4-butanediol comprising flowing crude 1,4-butanediol containing an unsaturated compound having a total carbon number of 4 into a packed bed filled with a solid catalyst obtained by loading a metal element belonging to Groups 9 to 11 of the long periodic table on a support, and converting the unsaturated compound having a carbon number of 4 into a corresponding hydride having a carbon number of 4 to obtain 1,4-butanediol reduced in the concentration of an unsaturated compound having a carbon number of 4, wherein the concentration of a nitrogen component contained in the crude 1,4-butanediol in the packed bed is from 1 ppm by weight to 1 wt % in terms of nitrogen atom, wherein the nitrogen component is an eluate of an anionic exchange resin having a primary amine polyethylene diamine skeleton having an N—H bond.
5. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the metal element belonging to Groups 9 to 11 of the long periodic table is a metal element belonging to Group 10 of the long periodic table.
6. The method according to claim 4 , wherein the metal element belonging to Groups 9 to 11 of the long periodic table is a metal element belonging to Group 10 of the long periodic table.
7. The method for producing a hydride having a carbon number of 4 according to claim 5 , wherein the metal element is nickel or palladium.
8. The method according to claim 6 , wherein the metal element is nickel or palladium.
9. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the nitrogen component is an eluate of an anionic exchange resin having a primary amine polyethylene diamine skeleton having an N—H bond.
10. The method for producing a hydride having a carbon number of 4 according to claim 2 , wherein the nitrogen component is an eluate of an anionic exchange resin having a primary amine polyethylene diamine skeleton having an N—H bond.
11. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the unsaturated compound having a total carbon number of 4 is present in an amount of 0.1 to 30 wt %.
12. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the unsaturated compound having a total carbon number of 4 is present in an amount of 0.5 to 20 wt %.
13. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the solvent comprises from 50 to 99.99 wt % of 1,4 butanediol.
14. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the nitrogen component concentration is 3 to 500 ppm by weight in terms of nitrogen atom.
15. The method according to claim 4 , wherein the nitrogen component concentration is 3 to 500 ppm by weight in terms of nitrogen atom.
16. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the nitrogen component is tributylamine.
17. The method according to claim 4 , wherein the nitrogen component is tributylamine.
18. The method for producing a hydride having a carbon number of 4 according to claim 1 , wherein the method is a continuous method.