CAJ | 학술논문

比较了醋酸溶液中过渡金属(Fe、Co、Ni、Ce、Cu、La、Zr或Cr)掺杂MCM-41催化过氧化氢氧化四氢萘合成α-四氢萘酮的转化率和选择性,发现其中Co/MCM-41的催化活性最好. 探讨了Co/MCM-41作催化剂时反应温度、反应时间、催化剂用量等对四氢萘氧化的转化率和形成四氢萘酮选择性的影响,确定了较优的反应条件:m(四氢萘)∶ m(催化剂)=12.5∶ 1;反应温度T=383 K,反应时间8 h. 四氢萘的转化率达94.7%,α-四氢萘酮的选择性达到70.3%. 在反应体系中,Co/MCM-41是一种固体非均相催化剂. 催化剂Co/MCM-41可回收重复使用3次,催化活性基本不变.
비교료작산용액중과도금속(Fe、Co、Ni、Ce、Cu、La、Zr혹Cr)참잡MCM-41최화과양화경양화사경내합성α-사경내동적전화솔화선택성,발현기중Co/MCM-41적최화활성최호. 탐토료Co/MCM-41작최화제시반응온도、반응시간、최화제용량등대사경내양화적전화솔화형성사경내동선택성적영향,학정료교우적반응조건:m(사경내)∶ m(최화제)=12.5∶ 1;반응온도T=383 K,반응시간8 h. 사경내적전화솔체94.7%,α-사경내동적선택성체도70.3%. 재반응체계중,Co/MCM-41시일충고체비균상최화제. 최화제Co/MCM-41가회수중복사용3차,최화활성기본불변.
The conversions and selectivities of the oxidation of tetralin to α-tetralone in acetic acid with H_2O_2 as oxidant over transition metals(Fe, Co, Ni, Ce, Cu, La, Zr and Cr) loaded MCM-41 were compared. An excellent conversion of tetralin and high selectivity of α-tetralone were also obtained when Co/MCM-41 was used. The effects of reaction temperature, reaction time and catalyst concentration on the catalyst performance were examined in order to optimize the conversion of tetralin and selectivity of α-tetralone. A selectivity of 70.3% of tetralin to α-tetralone was obtained at 94.7% conversion 1; reaction temperature=383 K, reaction time=8 h. Co/MCM-41 act as a solid heterogeneous catalyst in the reaction system and it can be recycled three times without losing its activity to a great extent.