

FOLLOWUS
College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen 361021, China
Corresponding author. E-mail address: lhgan401@126.com(L. Gan)
Received:29 October 2025,
Revised:2025-12-15,
Accepted:24 December 2025,
Online First:14 March 2026,
Published:2026-06
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Xiang Wang, Yan Sien, Wang Weijie, et al. Enhanced catalytic performance of lignin-derived carbon supported SnO
As a high-quality carbon source
this study employed the gradient acid precipitation method to separate and extract bamboo lignin (BL) fractions from alkaline pulping black liquor
aiming to investigate the influence of BL fraction on the yield of lignin-derived carbon supported tin oxide (SnO
x
/LC) and its catalytic performance in the conversion of glucose to 5-hydroxymethylfurfural (5-HMF)
utilizing various testing methods for detailed characterization. The characterization results revealed that SnO
x
/LC-2 was thermally stable with both Lewis acid and Brønsted acid sites
and the Sn element was uniformlmly dispersed on carbon carrier surface. In addition
with decreasing pH of black liquor
the molecular weight and polydispersity of BL fraction were significantly reduced
and its structural homogeneity was effectively improved. More importantly
the relative content of syringl unit and the content difference between phenolic hydroxyl and carboxylic acid groups in the structure of BL fractions both showed linear negative correlations with 5-HMF yield
which revealed the constitutive relationship between the molecular structural features of lignin and the catalytic performance of SnO
x
/LC
thus contributing to the high-value utilization of industrial lignin.
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