PdCl2-catalyzed hydrodeoxygenation of 5-hydroxymethylfurfural into 2, 5-dimethylfuran at room-temperature using polymethylhydrosiloxane as the hydrogen donor. (29th June 2019)

• Record Type: Journal Article
• Authors: Zhang, Jun; Dong, Kaijun; Luo, Weimin
• Is Part Of: Chemical engineering science. Volume 201(2019)
• Page Start: 467
• Page End: 474
• Publication Date: 2019-06-29
• Subjects: 5-hydroxymethylfurfural -- Polymethylhydrosiloxane -- Room temperature -- 2, 5-dimethylfuran; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.1016/j.ces.2019.03.011
• Languages: English
• ISSNs: 0009-2509

Abstract

Graphical abstract: A facile, readily available and inexpensive catalytic system composed of PdCl2 -PMHS-ethanol was explored for the efficient hydrodeoxygenation of HMF into DMF at room temperature. Highlights: A facile, green and mild method for the catalytic production of DMF was developed. 89.7% DMF was achieved from HMF at room temperature using PMHS as the hydrogen donor. One-step conversion of sugars into DMF was realized in PdCl2 -PMHS-ethanol system. Abstract: A facile and mild method for the catalytic production of 2, 5-dimethylfuran (DMF) from 5-hydroxymethylfurfural (HMF) was developed, which utilized commercial PdCl2 as the catalyst together with the green, non-toxic and low-cost hydride source, polymethylhydrosiloxane (PMHS). A synergistic effect among hydrogen donor, in situ generated metallic Pd 0 species and acid site HCl in the reaction played a key role in DMF formation. Gratifyingly, the desirable yield of hydrodeoxygenation product DMF as high as 89.7% from HMF was attained at room temperature (298 K) in 0.5 h. Meanwhile, biomass derived sugars also could be converted into DMF in relative high efficiency via a one-pot reaction in the present system. A plausible pathway for the hydrodeoxygenation of HMF into DMF in the present system was also proposed. The study thus highlights a new perspective for a simple, green, and efficient hydrodeoxygenation of biomass derivatives under milder conditions, employing a readily available, inexpensive and practical catalytic system of PdCl2 -PMHS-ethanol, but without any external hydrogen supplies and pre-reduction treatments.