Method for producing α, β-unsaturated ether
AssigneeShowa Denko K.K.
InventorsHiroto Kouka, Yoshikuni Okumura
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for producing an α,β-unsaturated ether efficiently and stably for a long time. In the method for producing an α,β-unsaturated ether, an acetal is thermally decomposed in the presence of a catalyst containing an apatite represented by any of the following formula (1)-(4) (M)5−y(HZO4)y(ZO4)3−y(X)1−y (1) (M)5−y(HPO4)y(PO4)3−y(X)1−y (2) (M)5−y+2n(HZO4)y(ZO4)3−y(X)1−y(SiO4)n (3) (M)5−y+m(HZO4)y(ZO4)3−y(X)1−y(CO3)m (4).
Claims3
A method for producing an α,β-unsaturated ether comprising thermally decomposing an acetal in the presence of a catalyst containing an apatite, the apatite being represented by general formula (1):
- (M)5−y(HZO4)y(ZO4)3−y(X)1−y (1)
- wherein M is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Pb, Mn and Cd, Z is at least one selected from the group consisting of P, As and Sb, X is at least one selected from the group consisting of OH, F, Cl, Br, I and At, and 0≦y<1.
A method for producing an α,β-unsaturated ether comprising thermally decomposing an acetal in the presence of a catalyst containing a phosphate apatite, the apatite being represented by general formula (2):
- (M)5−y(HPO4)y(PO4)3−y(X)1−y (2)
- wherein M is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Pb, Mn and Cd, X is at least one selected from the group consisting of OH, F, Cl, Br, I and At, and 0≦y<1.
A method for producing an α,β-unsaturated ether comprising thermally decomposing an acetal in the presence of a catalyst containing an apatite, the apatite being represented by general formula (3) or (4):
- (M)5−y+2n(HZO4)y(ZO4)3−y(X)1−y(SiO4)n (3)
- (M)5−y+m(HZO4)y(ZO4)3−y(X)1−y(CO3)m (4)
- wherein M is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Pb, Mn and Cd, Z is at least one selected from the group consisting of P, As and Sb, X is at least one selected from the group consisting of OH, F, Cl, Br, I and At, 0≦y<1, 0<n<3, and 0<m<3.
Dependencies are inferred from the claim text.