CAJ | 학술논문

微波辐射法可以在数分钟内将高度分散的Pt3Co合金颗粒负载于还原氧化石墨烯表面上.表征结果发现，与传统的溶剂热法和浸渍法相比，微波法制备的催化剂中贵金属的利用率高，合金颗粒的分布均匀，组成可控，同时氧化石墨烯的再石墨化现象也得到有效地抑制.采用微波法制备的Pt3Co/RGO-MW催化剂在肉桂醛加氢反应中具有较高的活性和和产物选择性. Pt3Co/RGO-MW中每一个Pt原子在70°C的转化频率高达23.8 min-1.
미파복사법가이재수분종내장고도분산적Pt3Co합금과립부재우환원양화석묵희표면상.표정결과발현，여전통적용제열법화침지법상비，미파법제비적최화제중귀금속적이용솔고，합금과립적분포균균，조성가공，동시양화석묵희적재석묵화현상야득도유효지억제.채용미파법제비적Pt3Co/RGO-MW최화제재육계철가경반응중구유교고적활성화화산물선택성. Pt3Co/RGO-MW중매일개Pt원자재70°C적전화빈솔고체23.8 min-1.
Ultrafine and homogenously dispersed Pt3Co alloy nanoparticles were fabricated on reduced gra‐phene oxide (RGO) in a few minutes under microwave irradiation. Characterization results con‐firmed that microwave irradiation was important for higher metal utilization, the easy control of alloy composition, improved dispersion of the Pt3Co particles and minimizing the re‐graphitization of the parent RGO by comparison with conventional solvent‐thermal and impregnation methods. This Pt3Co/RGO‐MW catalyst was extremely active and selective during the hydrogenation of cin‐namaldehyde to cinnamyl alcohol. The calculated specific activity of each Pt atom in the Pt3Co/RGO‐MW at 70 °C was 23.8 min–1.