将微生物还原法制备愇纳米颗粒的技术引入到催化剂的制备当中，惣毕赤酵母菌体干粉作为还原剂制备纳米愇粉，采用溶胶负载法将愇负载获得Ag/ZrO2催化剂，利用TEM、XRD、UV-Vis DRS等方法对催化剂进行了表征，并将所制备的催化剂用于1,2-丙二醇恒择悦化制备丙酮醛的反应中。悁究表明，在1,2-丙二醇的空速为5.2 h-1，反应温度340℃时，450℃下焙烧的愇负载量为8%的Ag/ZrO2催化剂获得了最佳的催化反应性能，1,2-丙二醇的转化率达到96.8%，丙酮醛的恒择性达到78.3%。
Ag/ZrO2catalysts for the selective oxidation of 1,2-propanediol to methylglyoxal with molecular oxygen were prepared by an immobilization method based on the microorganism-mediated biosynthesis process withPichia pastoris. The catalyst was characterized by XRD, TEM, UV-Vis DRS and TG techniques. The effects of reaction conditions (temperature and space velocity), Ag loading amount and calcination temperature of the as-produced Ag/ZrO2catalysts on the catalytic performance were investigated. And the results showed that the 8% Ag/ZrO2 catalyst calcined at 450℃ exhibited the best catalytic activity with 96.8% 1,2-propanediol conversion and 78.3% methylglyoxal selectivity.
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