当前位置: X-MOL 学术Appl. Catal. A Gen. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Incorporation of molybdenum into Pd and Pt catalysts supported on commercial silica for hydrodeoxygenation reaction of dibenzofuran
Applied Catalysis A: General ( IF 5.5 ) Pub Date : 2017-08-25 , DOI: 10.1016/j.apcata.2017.08.034
D. Ballesteros-Plata , A. Infantes-Molina , M. Rodríguez-Cuadrado , E. Rodríguez-Aguado , P. Braos-García , E. Rodríguez-Castellón

Molybdenum was incorporated into catalysts based on noble metals (Pt or Pd) and supported on silica in order to evaluate how its presence can modify the catalytic response of monometallic catalysts for hydrodeoxygenation (HDO). To this end, the catalysts were evaluated in the hydrodeoxygenation (HDO) reaction of dibenzofuran (DBF) and characterized by different experimental techniques to understand its structure, texture and acidic properties. Catalytic results showed that the active phase had much influence on the activity and selectivity to different reaction products, although, in all cases, bicyclohexane (BCH) was the main reaction product observed. Molybdenum played a very important role in the case of bimetallic catalysts, mainly in the case of palladium. Molybdenum species improved the selectivity to O-free products related to its capacity to break the CO bond. However, molybdenum activity was nil in the absence of noble metal. Moreover, regardless of the noble metal employed, the reducibility, acidity and dispersion of the molybdenum species changed and this is possibly associated to a synergism effect between noble metal and Mo.



中文翻译:

将钼掺入负载在商用二氧化硅上的Pd和Pt催化剂中以进行二苯并呋喃的加氢脱氧反应

钼被掺入到基于贵金属(Pt或Pd)的催化剂中,并负载在二氧化硅上,以评估钼的存在如何改变单金属催化剂对加氢脱氧(HDO)的催化反应。为此,在二苯并呋喃(DBF)的加氢脱氧(HDO)反应中对催化剂进行了评估,并通过不同的实验技术对其进行了表征,以了解其结构,织构和酸性。催化结果表明,尽管在所有情况下,双环己烷(BCH)是观察到的主要反应产物,但活性相对活性和对不同反应产物的选择性都有很大影响。钼在双金属催化剂的情况下,尤其是在钯的情况下,起着非常重要的作用。O键。但是,在没有贵金属的情况下,钼的活性为零。此外,不管所使用的贵金属如何,钼物种的可还原性,酸性和分散性都发生了变化,这可能与贵金属和Mo之间的协同效应有关。

更新日期:2017-08-25
down
wechat
bug