负载型纳米金催化剂在乙炔选择性加氢反应中的研究进展

介绍了乙炔选择性加氢制乙烯催化剂的研究和开发进展。针对负载型纳米金催化剂的发展趋势及其对乙炔加氢反应产物中乙烯的独特选择性,重点对比单金属纳米金催化剂及合金型催化剂的催化性能差异,发现合金型纳米金催化剂具有较高的乙炔转化率和稳定性。影响催化性能的主要因素有纳米粒子的大小及活性组分之间的相互协同作用。分析积炭的形成以及导致催化剂失活的原理。展望低温条件下具有高转化率与高稳定性的合金型纳米金催化剂的应用前景。

Progress in supported nanogold catalyst for selective hydrogenation of acetylene

The advance in research and development of the catalysts for selective hydrogenation of acetylene to ethylene was introduced.Since the supported nanogold catalysts were extensively used in many hydrogenation processes,more particular attention was paid to compare with catalytic performance of monometallic catalyst and nanoalloy Au catalyst in the selective hydrogenation of acetylene,such as nanoalloy Au catalyst had higher acetylene conversion and stability.The main factors affecting the catalytic properties were the size of the nanoparticles and the synergistic effect of the active components.The formation of carbon deposition and the deactivation principle of the catalysts were presented.It is pointed out that the future improvement of nanoalloy Au catalyst for acetylene selective hydrogenation should aimed at high conversion,relative higher selectivity and good adaptability.