“…20,21 Furthermore, the important higher flash point of biodiesel makes it more easily transported and stored. 22,23 On the other hand, HMF, an important biomassbased furan derivative that can be conveniently synthesized from solid biomass such as carbohydrates, 24 has been identified as a key precursor for the production of high-value chemicals and biofuels. 25 Moreover, HMF is also considered "a building-block molecule", 26 which can be further transformed through a range of controllable reactions into various valuable derivatives, including potential biofuels such as 2,5-dimethylfuran (DMF), 5-ethoxymethylfurfural (EMF) etc.…”