改性骨架镍催化马来酸酐加氢制备琥珀酸酐

Mild Hydrogenation of Maleic Anhydride to Succinic Anhydride Catalyzed by Modified Skeletal Nickel

摘要:

将骤冷法制备的改性骨架镍用于马来酸酐的催化加氢，发现其可在温和条件下高选择性的制备琥珀酸酐。考察了不同反应参数对该反应的影响，实验发现，当采用1,4-二氧六环为溶剂，在0.2 MPa和30 ℃的温和条件下反应60 min，马来酸酐的转化率和琥珀酸酐的选择性均可达到100%。在上述条件下，该反应表现为零级反应，其表观活化能为27.1 kJ/mol。

Abstract:

Maleic anhydride was selectively hydrogenated into succinic anhydride over modified skeletal Ni under mild conditions. Effects of different solvents, initial concentration of maleic anhydride, reaction temperature and pressure have been investigated. Under the optimized reaction conditions of 0.2 MPa, 30 ℃ and using dioxane as solvent, the conversion of maleic anhydride and the selectivity of succinic anhydride are both close to 100% in 60 minutes. The reaction is a pseudo-zero order reaction, and the apparent activation energy of the catalytic hydrogenation of maleic is 27.1 kJ/mol.