Fig. 2: Catalytic conversion of xylose over the Cu/SBA-15, X/SBA-15 and Cu-X/SBA-15 (X = La, Ce, Y) catalysts.
From: Selective production of methylindan and tetralin with xylose or hemicellulose
Reusability of Cu/SBA-15 catalyst a and Cu-X/SBA-15 d–f catalysts. Conversion of xylose and the carbon yields of products over the Cu-X/SBA-15 (b) and X/SBA-15 (c) catalysts. Reaction conditions: 433 K, 3 MPa H2, 500 rpm, 4 h; 10 mL 3 wt% NaCl aqueous solution, 10 mL toluene, 0.3 g xylose and 30 mg catalyst were utilized for the test. The contents of rare-earth metal in Cu-La/SBA-15, Cu-Ce/SBA-15, Cu-Y/SBA-15, La/SBA-15, Ce/SBA-15 and Y/SBA-15 catalysts were fixed as 3 wt%. In the regeneration process, the used catalysts were calcinated in air flow at 773 K for 4 h and reduced in 20% H2/Ar flow at 773 K for 4 h. THFA tetrahydrofurfuryl alcohol. FA furfuryl alcohol, FF furfural, CPO cyclopentanone, CPL cyclopentanol.
