乙炔羰基合成丙烯酸的催化剂和工艺条件优化

Carbonylation of Acetylene with Carbon Monoxide to Acrylic Acid Catalyst and Reaction Conditions Optimizing

主要包括乙炔羰基化合成丙烯酸(AA)的催化剂活性探索以及工艺条件优化。实验结果表明,催化剂体系选择NiBr2-CuBr2-PPh3-CH3SO3 H,溶剂选择THF-H2O;催化剂浓度以镍计约0.1%;反应温度为210-220℃,反应压力8MPa,反应时间1h,搅拌转速400rpm;得到的产品液澄清,含少量沉积物,约0.02g/gAA;其中AA含量达19%,AA选择性高于85%,时空收率最高可达140h-1,溶剂损耗量约0.09gTHF每g产物丙烯酸。

The catalyst and reaction conditions of acetylene carbonylation with carbon monoxide to acryhc acid were discussed in this paPer. The optimum catalyst system of acetylene carbonylation should contain 0.1% of nickel bromide, 0.05 % of cupric bromide, mole ratio of triphenylphosphine to nickel was 2, mole ratio of methanesulfonicacid to nickel was 1. The reaction activity was the highest and the reaction liquid was clear with this catalyst system at 210-220℃, under 8MPa and 400rpm stirring speed. Under the optimum reaction condition, about 19% acrylic acid was was 140h^-1, the sediments was about 0.02g/gAA, gAA. obtained, and selectivity was above 85%, the STY while the solvent loss would be nearly 0.09gTHF/