Abstract: An SOFC (solid oxide fuel cell) water management system, which comprises a condensation water storage device in cooling cooperation with a tail gas discharged by an SOFC, a water storage tank for recovering condensation water from the discharged tail gas is arranged in the condensation water storage device; a water supply pipeline in communication with a reforming reaction unit of the SOFC extends from the water storage tank, a water pump and a water volume control valve for controlling the water supply flow from the water supply pipeline are provided on the water supply pipeline. The tail gas discharged from the stack in the SOFC system exchanges heat through the condensation water storage device, a condenser provided therein exchanges heat with external air or a fuel gas so as to cool the tail gas discharged by the stack. The condensed water is separated out, and the water storage tank recovers and stores the condensed water.

Abstract: The present invention discloses a cellulose derivative shown as formula (I), which is obtained as follows: the hydroxyl at position 6 of microcrystalline cellulose is protected with triphenylchloromethane, and then reacted with acyl chloride or isocyanate. After the protection of the hydroxyl at positions 2 and 3 of microcrystalline cellulose, triphenylmethyl is removed under acidic conditions to expose the hydroxyl at position 6. Finally, the hydroxyl at position 6 is chiral derivatized with amino acid acyl chloride or polypeptide acyl chloride, to obtain a micro chiral regulation cellulose derivative. The micro chiral regulation cellulose derivative thus obtained is coated onto the surface of a silica gel support, to form a chiral stationary phase, which is filled in a stainless steel column to form a chiral column for the separation of various different types of chiral compounds. The preparation method of the present invention is not only efficient and convenient, but also safe and reliable.

Abstract: The present invention provides a bisamide-containing novel liquid chromatographic media and method of synthesizing the same. A novel polar bisamide functional group, which can form hydrogen bonds or ion pairs with residual silanols on the surface of silica gel, is used as the bonded phase on the surface of silica gel to better shield the activity of silanols and to eliminate the influence of residual silanol groups. Compared with conventional C18 columns, these novel bonded phases have different selectivity; they can work not only in 0 to 100% water but also in 0 to 100% organic mobile phase. In particular, they exhibit good peak shapes and resolutions for polar and basic compounds and have good stability within a very wide pH range. These properties make the new stationary phases a useful complement to conventional C18 columns for a variety of HPLC applications.