Method for bipolar membrane electroreduction of xylose to prepare xylitol

The invention discloses a method for bipolar membrane electroreduction of xylose to prepare xylitol. The method comprises the following steps: (1) a bipolar membrane electrolysis system comprising a power supply, and a cathode plate, a bipolar membrane and an anode plate which are sequentially arranged is constructed, the cathode chamber is formed between the cathode plate and the bipolar membrane, the anode chamber is formed between the bipolar membrane and the anode plate, the cathode of the power supply is electrically connected to the cathode plate, the anode of the power supply is electrically connected to the anode plate, xylose and a cathode chamber solution are added into the cathode chamber, and an anode chamber solution is added into the anode chamber; (2) the current and the voltage of the electrolysis system and the temperatures of the cathode chamber and the anode chamber are controlled in the reaction process; and (3) the power supply is turned on, and the bipolar membrane electrolysis system st