Process for the preparation of acrolein and/or acrylic acid
Process for the preparation of acrolein and/or acrylic acid by catalytic gas-phase selective oxidation reaction of propane, the process comprising contacting a reaction gas containing propane and an oxygen-containing gas over a mixed metal oxide solid catalyst supported on a TiO 2 —MoO 3 porous support.
1. Process for the preparation of acrolein and/or acrylic acid by catalytic gas-phase selective oxidation reaction of propane, the process comprising contacting a reaction gas containing propane and an oxygen-containing gas over a mixed metal oxide solid catalyst supported on a TiO 2 —MoO 3 porous support.
2. Process according to claim 1 , wherein the mixed metal oxide solid catalyst comprises V, W, Sb and Bi.
3. Process according to claim 2 , wherein the mixed metal oxide solid catalyst has the empirical formula V a W b Sb c Bi d O x , where x is determined by the oxidation state of the metals and the coefficients a,b,c,d can be any number larger than or equal to 0.
4. Process according to claim 1 , wherein the TiO 2 —MoO 3 support comprises 60–90 mole % TiO 2 and 10–40 mole % MoO 3 .
5. Process according to claim 4 , wherein the TiO 2 —MoO 3 support comprises 80 mole % TiO 2 and 20 mole % MoO 3 .
6. Process according to of claim 1 , wherein the reaction gas contains inert components.
7. Process according to claim 1 , wherein the selective oxidation reaction occurs at a temperature of between 200° C. and 500° C.
8. Process according to claim 1 , wherein the selective oxidation reaction occurs at a pressure of 0.5–15 atm.
9. Process according to claim 1 , wherein the molar ratio between propane and oxygen in the oxygen-containing gas is 0.1–10.
10. Process according to claim 9 , wherein the molar ratio between propane and oxygen is and 0.5–2.