Catalytic Conversion of Carbohydrates to Methyl Lactate Using Isolated Tin Sites in SBA‐15. Issue 1 (9th January 2017)

• Record Type: Journal Article
• Authors: Pang, Jifeng; Zheng, Mingyuan; Li, Xinsheng; Song, Lei; Sun, Ruiyan; Sebastian, Joby; Wang, Aiqin; Wang, Junhu; Wang, Xiaodong; Zhang, Tao
• Is Part Of: ChemistrySelect. Volume 2:Issue 1(2017)
• Page Start: 309
• Page End: 314
• Publication Date: 2017-01-09
• Subjects: carbohydrates -- methyl lactate -- catalyst -- isolated -- tin sites; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201601752
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A series of Sn‐SBA‐15 catalysts were synthesized using a post‐synthetic metal implantation method for converting carbohydrates to methyl lactate. The tin species were highly dispersed and isolatedly grafted in the framework of SBA‐15 under the tin salt concentration between 2 and 25 wt%. They solely provided a large number of Lewis acid sites, which showed robust activity for carbohydrates conversion in contrast to the performance of tin dioxide domains or particles. Over a Sn‐SBA‐15 catalyst (Si/Sn molar=150), the Lewis acid density was 45.9 μmol/g, and methyl lactate yield reached a high value of 57.0 % from inulin conversion in methanol at 433 K for 20 h, without the formation of methyl levulinate by‐product. The Sn‐SBA‐15 catalysts were rather stable under reaction conditions, and cycled at least for 4 times without deactivation. Abstract : Isolated is better: Sn‐SBA‐15 catalysts containing isolated Sn sites in the framework of SBA‐15, which afforded relatively high Lewis acid amounts, are highly active and selective in the conversion of carbohydrates to methyl lactate.