Green aromatic aldehydes production from biomass via catalytic fractionation and ozonolysis

1. Article information

Title: Green aromatic aldehydes production from biomass via catalytic fractionation and ozonolysis

2. Article link

DOI: http://doi.org/10.1039/D4GC04199B

3. Journal Information

Journal Green Chemistry

4. Author Information: Tianyu Ren, a   Peidong Li,a   Zhuo He,a   Xinfeng Pan,a   Yutao Yang,a   Yuhe Liao,a   Haiyong Wang, a   Yanbin Cui*a  and  Chenguang Wang *a  

a CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Tianhe District, Guangzhou 510640, China

5.Ozone monitor：3S-J5000（beijing tonglin）

Conclusions

We propose CF-ozonolysis cascade processes for producing aromatic aldehydes from lignocellulosic biomass. The native lignin is depolymerized via a CF process, a variant of RCF, to selectively form alkene-functionalized MP-G and MP-S with a total yield of over 30 wt% at 175 °C. Then, the liquid product is simply bubbled with an O3/O2 flow, affording 20 wt% vanillin and syringaldehyde from MP-G and MP-S, respectively. The vanillin yield is over 95% and is not lost due to overoxidation. Compared with the traditional alkaline aerobic oxidation approach, CF-ozonolysis processes neither use a base nor produce evident oxidative by-products. Moreover, as a lignin-first strategy, the CF process applies low-cost and commercial MoO2 as the catalyst and well preserves the carbohydrate. Therefore, CF-ozonolysis represents an advancement in sustainable production of aromatic aldehydes and biomass valorization.