分子氧条件下Co-ETS-10和Co-AM-6催化苯乙烯氧化生成氧化苯乙烯和苯甲醛(英文)

查看全文 作　　者：Shuvo Jit [1]Datta;Kyung Byung [1]Yoon

机构地区：[1]Korea Center for Artificial Photosynthesis, Center for Nano Materials, Department of Chemistry, Sogang University

出　　处：《催化学报》索引2015年第36卷第6期,共9页

基　　金：supported by the Ministry of Science,ICT and Future Planning through the National Research Foundation of Korea(no.2009-0093886,no.2012R1A2A3A01009806) 摘　　要：Pristine ETS-10 and AM-6 and their Co2+-exchanged forms were prepared, and their catalytic activities toward the oxidation of styrene in oxygen atmosphere were studied in dimethylformamide. The catalysts were denoted as Co-E10-n(n = 0, 9, 26, 68, 81) and Co-A6-m(m = 0, 8, 23, 63, 79), where n and m denote the degree of Co2+ exchange. The products of the oxidation process were identified as styrene epoxide(E) and benzaldehyde(B). Both the pristine forms, ETS-10(Co-E10-0) and AM-6(Co-A6-0), and Co2+-exchanged forms displayed catalytic activities. With increasing n or m, the conversion, and hence the rate, increased. Specifically, the rates varied from 6.1 to 12.5 mmol·g-1·h-1with increasing n(Co-E10-n catalysts) and from 5.4 to 12.4 mmol·g-1·h-1 with increasing m(Co-A6-m catalysts). In contrast, the E/B ratio decreased with increasing n or m. More specifically,the E/B ratio decreased from 2.1 to 0.1 with increasing n from 0 to 81(Co-E10-n catalysts) and from 1.3 to 0.1 with increasing m from 0 to 79(Co-A6-m catalysts). Co-E10-9 displayed the highest E yield and Co-A6-79 generated the highest B yield. The highest turnover frequency obtained was 36.3 Co-1·h-1, which was the highest one obtained among those obtained for the Co2+-exchanged zeolites and mesoporous silica reference materials studied in this work. 关键词：苯乙烯氧化物活性催化剂苯甲醛分子氧二甲基甲酰胺介孔二氧化硅二氧化碳 N催化剂

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分子氧条件下Co-ETS-10和Co-AM-6催化苯乙烯氧化生成氧化苯乙烯和苯甲醛(英文)

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