Effects of the support on bifunctional one-step synthesis of methylal via methanol oxidation catalysed by Fe–Mo-based bifunctional catalysts. Issue 1 (20th November 2020)

• Record Type: Journal Article
• Authors: Yuan, Meng; Tang, Ruiyuan; Sun, Xiangyu; Zhang, Zhimei; Tian, Yuanyu; Qiao, Yingyun
• Is Part Of: Sustainable energy & fuels. Volume 5:Issue 1(2021)
• Page Start: 246
• Page End: 260
• Publication Date: 2020-11-20
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d0se01194k
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : In the one-step preparation of methylal from methanol, achieving high methanol conversion and high methylal yield is a huge challenge. Abstract : In the one-step preparation of methylal from methanol, achieving high methanol conversion and high methylal yield is a huge challenge. To address this problem, in this study a new Fe–Mo-based catalyst was designed, and the effect of the type and amount of the support on catalytic activity was explored. The results showed that Mo:Fe(2)/HZSM-5(80 + 80), in which HZSM-5(80 + 80) was the catalytic support, had excellent catalytic performance, with the yield of methylal reaching 81.33%, much higher than other reported results of this process. Through XPS, NH3 -TPD and PY-FTIR analyses it was found that the formation of Mo 5+ promoted coordination of the two terminal oxygens with the Mo double bond in the Fe2 (MoO4 )3 octahedron, and the higher the B/L acid site ratio, the better the catalytic activity and the higher the selectivity of the target product. The apparent activation energy also further proved that Mo:Fe(2)/HZSM-5(80 + 80) was highly suitable for the one-step production of methylal from methanol.