Abstract
A high-performance Pt catalyst supported on SBA-15 was developed for furfural decarbonylation. Compared to Pt catalysts loaded on microporous DeAl-Hbeta zeolite and hierarchical micro-mesoporous MFI nanosheet (NS) materials, the 1%Pt/SBA-15 catalyst afforded notably higher activity, furan selectivity and stability owing to the negligible acid sites and proper mesopores on the SBA-15 support. Among a set of 1%Pt/SBA-15 catalysts bearing Pt nanoparticles (NPs) with sizes of 2.4–4.3 nm, the catalyst with 3.7 nm Pt NPs afforded the highest furan selectivity. Over the optimal catalyst, 88.6% furan selectivity and ca. 90% furfural conversion were obtained at 573 K and a high weight hourly space velocity (WHSV) of 16.5 h−1. Moreover, the reaction temperatures at 440–573 K and the ratios of H2 to furfural at 0.79–9.44 did not affect the reaction selectivity notably, showing that the reaction over 1%Pt/SBA-15 can be conducted over a wide range of conditions. The catalyst was stable under the harsh reaction conditions and lasted for 90 h without significant deactivation, demonstrating the superior property of SBA-15 as a catalyst support for furfural decarbonylation.
Highlights
Furan is an important, five-membered, oxygen-containing chemical widely used in the synthesis of pharmaceuticals and agrochemicals [1,2]
The catalyst was stable under the harsh reaction conditions and lasted for 90 h without significant deactivation, demonstrating the superior property of SBA-15 as a catalyst support for furfural decarbonylation
Given that the decarbonylation of furfural to furan is a structure-sensitive reaction [5], we further investigated the effect of the Pt NP size on the catalysts
Summary
Five-membered, oxygen-containing chemical widely used in the synthesis of pharmaceuticals and agrochemicals [1,2]. Thanks to the abundant furfural production from renewable. C5 carbohydrates and the developments of catalytic processes, more environmentally benign and atom-economic furfural decarbonylation has become the prevailing way for furan production in both gas and liquid phases [4,5,6,7]. The market price of furan is about twice that of furfural. Hydrogen is always present in this reaction to maintain the metallic state of catalysts [8,9,10]. Furfural is metastable under reaction conditions and prone to polymerizing into high-molecular-weight products and causing catalyst deactivation [11]. The decarbonylation of furfural with high efficiency over a stable catalyst still presents considerable challenges
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