abstract |
The present invention relates to a method for the preparation of C4 oxygenates (eg threose, erythrose) from compositions comprising C1-3 oxygenates (eg formaldehyde, glycolaldehyde, glyoxal, glyoxal or acetol) or erythrulose), wherein the method is carried out in the presence of a crystalline microporous material having a ring pore structure selected from the group consisting of an eight-membered ring pore structure and a ten-membered ring pore structure. |