通过改变催化剂和溶剂的用量，可以实现碳气凝胶的颗粒直径及孔洞由纳米到微米级的连续调节。
The structures of carbon aerogels are controlled from micro pore to macro pore by changing the concentration of catalyst and solvent.
经不同工艺和过程制备二氧化硅气凝胶，初步摸索出制备温度、 溶剂、 催化剂、反应时间最佳参数。
The factors that influence silica aerogel preparations were investigated, and the optimum values were obtained for preparing temperature, solvent, catalyst and process duration.
首先采用溶胶-凝胶法制备镍催化剂，在此基础上用化学气相沉积法高产率地制备了碳纳米管。
The catalyst was first produced by sol-gel method and the carbon nanotubes were high yield synthesized by the catalytic chemical vapor decomposition method.
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