Reported approach aims for the synthesis of spherical cellulose beads with high production rates (0.7–4.1 kg/h of hydrogel) via the so-called jet cutting method. To form particles, jets of aqueous cellulose/sodium hydroxide solutions were cut into pieces and collected in a gelation bath (30 wt% aqueous H₂SO₄, 20 °C). After solvent exchange with ethanol and subsequent supercritical drying, cellulose aerogel particles were obtained. The particles showed high specific surface areas (ca. 400 m²/g) and low bulk (untapped) densities (0.06–0.10 g/cm³). Variation of cellulose content (4–7 wt%) and jet cutting process parameters (cutting frequency, nozzle diameter, jet velocity) turned to be useful parameters for controlling the particles size and shape. Highly spherical particles with sphericity SPH ≥ 0.92 were obtained in a broad range of achievable particle sizes (0.4–1.0 mm), with an optimum of SPH at 6 wt% cellulose content.

报道的方法旨在通过所谓的喷射切割法合成具有高生产率（0.7-4.1 kg / h水凝胶）的球形纤维素珠。为了形成颗粒，将纤维素/氢氧化钠水溶液的射流切成小段，并收集在凝胶浴（30wt％的H ₂ SO ₄水溶液，20℃）中。与乙醇交换溶剂并随后超临界干燥后，获得纤维素气凝胶颗粒。颗粒显示出较高的比表面积（约400 m ² / g）和较低的堆积（未挖掘）密度（0.06-0.10 g / cm ^3））。纤维素含量（4-7 wt％）和喷射切割工艺参数（切割频率，喷嘴直径，喷射速度）的变化已成为控制颗粒尺寸和形状的有用参数。 在很宽的粒径范围内（0.4-1.0 mm），可获得球形度SPH≥0.92的高球形颗粒，在纤维素含量为6 wt％时，SPH的最佳值。