Aiming to develop an effective catalytic process for utilizing biomass, conversion of corncob into furfural was firstly performed using tin-loaded bentonite (Sn-BTN) as solid acid catalyst. Corncob was pretreated with Sn-BTN (3.5 wt%) for producing furfural at 53.3% yield in methyl isobutyl ketone-water (5:5, v:v; pH 1.0) biphasic media within 0.5 h at 170 °C. Furthermore, an efficient Sn-BTN recycling was achieved after 5 cycles of repeated use. Finally, furoic acid was obtained at 53.3% yield from corncob via sequential catalysis with solid acid Sn-BTN and Brevibacterium lutescens whole cells harboring furfural-oxidizing activity in methyl isobutyl ketone-H 2 O (5:5, v:v) media was developed under the relatively mild conditions. Clearly, this hybrid strategy for the synthesis of furoic acid from biomass was successfully developed via tandem catalysis of corncob with Tin-loaded bentonite and Brevibacterium lutescens whole-cell. Graphic Abstract

中文翻译：

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通过在双相介质中将玉米芯有效预处理成糠醛来增强糠酸的生物合成

为了开发一种有效的生物质利用催化工艺，首先使用载锡膨润土（Sn-BTN）作为固体酸催化剂将玉米芯转化为糠醛。玉米芯用 Sn-BTN (3.5 wt%) 预处理，在甲基异丁基酮-水 (5:5, v:v; pH 1.0) 双相介质中在 0.5 小时内在 170 °C 下以 53.3% 的产率生产糠醛。此外，在重复使用 5 次循环后，实现了有效的 Sn-BTN 回收。最后，在甲基异丁基酮-H 2 O (5:5, v:v) 培养基中，通过固体酸 Sn-BTN 和黄褐短杆菌全细胞的连续催化，以 53.3% 的产率从玉米芯中获得糠酸，该细胞具有糠醛氧化活性。在相对温和的条件下发展起来。清楚地，这种从生物质中合成糠酸的混合策略是通过玉米芯与载锡膨润土和黄褐色短杆菌全细胞的串联催化成功开发的。图形摘要