State;
Key;
Laboratory;
of;
Catalysis,;
Dalian;
Institute;
of;
Chemical;
Physics,;
Chinese;
Academy;
of;
Sciences;
University;
of;
Chinese;
Academy;
of;
Sciences;
Department;
of;
Chemical;
Engineering,;
Sichuan;
University;
xylose; furfural; dehydration; biphasic; solvent; system; solid; acid; catalyst; niobium; phosphate;