Abstract: Using hydrophobic nano-silicon dioxide, deionized water, ethylene glycol and calcium oxide as the raw material, dry glycol-water calcium oxide resembling confectioners' sugar was prepared by the high-speed mixing, and the effect of shape of weight percentage content on the shape of dry glycol-water calcium oxide was investigated. The effect of content of active constituents, volume of glycol-water, gas flow and service life of the catalyst on the COS hydrolysis transforming rate was investigated. Under the condition of room temperature, gas flow of 10 mL/min, dry glycol-water calcium oxide (the conditions of preparation: 1 g CaO, 40 mL deionized water, 40 mL ethylene glycol, 19 g hydrophobic nano-silicon dioxide, agitation time 10 s) of 2 g, COS hydrolysis transforming rate reached 90%, and service life of this catalyst was 3.25 hours.

Key words: Dry glycol-water, Carbonyl sulfide, Catalysis hydrolysis, Hydrophobic nano-silicon dioxide

摘要： 以疏水性纳米二氧化硅、去离子水、乙二醇和氧化钙为原料，考察了不同配比对干醇-水氧化钙形态的影响，制备出白砂糖状的干醇-水氧化钙催化剂。考察了活性组分质量、气体流量、醇-水体积比和催化剂使用寿命对COS催化水解的影响。结果发现，在室温、气体流量10 mL/min、催化剂质量2 g条件下，干醇-水氧化钙（组成为：1.0 g氧化钙、40 mL乙二醇、40 mL去离子水、19 g疏水性纳米二氧化硅、搅拌时间10 s）催化COS水解转化率在90%时，该催化剂的使用寿命为3.25 h。

关键词: 干醇-水, 羰基硫, 催化水解, 疏水纳米二氧化硅