以无助剂的二氧化硅溶胶为胶液，通过离心喷雾干燥制备球径可控的微米钛硅分子筛催化剂（TS-1）微球。考察了成型过程中进料速度、喷雾成型温度等工艺参数对分子筛成球、球径以及球形度的影响，并初步探讨了成球机制。结果表明，成型温度为170℃、进料速度为8 mL/min时可制备出球形度良好、球径集中分布于55 μm的钛硅分子筛微球。将其用于环己酮氨肟化反应中，在环己酮空速为12 h^-1催化反应中，寿命为28 h （转化率>90%）。优异的催化性能归因于分子筛微球高的比表面积、丰富的孔结构以及微球中含硅非活性成分抑制了钛硅分子筛骨架钛流失。

Using auxiliary-free silica sol as glue soluting,titanium-silicon-1 (TS-1) molecular sieve microsphere catalyst with a controllable diameter is prepared by centrifugal spray drying technology.The effects of synthesis conditions,such as feed speed and spray molding temperature,on the microsphere shaping,diameter and sphericity of molecular sieve and the mechanism of the microsphere shaping are investigated.It is shown that the microspheres with uniform size distribution (55 μm) and good sphericity can be obtained under optimal conditions (molding temperature at 170℃,feeding speed at 8 mL·min^-1).The catalyst can be used for 28 h in the catalytic reaction of cyclohexanone and the conversion exceeds 90% when the space velocity of cyclohexanone is 12 h^-1.The good catalytic performance is attributed to high specific surface area and abundant pore structure as well that the non-active silicon-containing components inhibit the loss of titanium skeleton of TS-1.