Method of preparing 2,5-dimethoxy-2,5-dihydrofuran through biomass furan photocatalysis

The invention discloses a method of preparing 2,5-dimethoxy-2,5-dihydrofuran through biomass furan photocatalysis. Currently, two traditional synthesis methods are available, wherein one is a chemicalsynthesis method which is implemented through a halogenation reaction between furan and elemental bromine, and the method is gradually eliminated because the reaction process is high in production cost and causes serious environmental pollution; and the other one is an electrolysis method, wherein the furan is subjected to electrolytic oxidation in a methanol solution, and the method has the defects that production cost is high, and electrolyte treatment is complicated. According to the method, biomass furan and methanol are used as raw materials, and the 2,5-dimethoxy-2,5-dihydrofuran is synthesized through a photocatalyst function in a room-temperature normal-pressure air atmosphere under visible light illumination. Through the method, operation is easy, production cost is greatly lowered, environmental polluti