催化作用
化学
木质素
解聚
乙酰丁香酮
金属
产量(工程)
氧气
核化学
无机化学
有机化学
材料科学
冶金
基因
转基因
生物化学
根癌农杆菌
作者
Avnish Kumar,Bijoy Biswas,Ramandeep Kaur,Shivam Rawat,Bhavya B. Krishna,Pramod Kumbhar,Siddhartha Pal,Sasisankar Padmanabhan,Thallada Bhaskar
标识
DOI:10.1016/j.biortech.2022.127032
摘要
Oxidative depolymerization of an industrial lignin was performed to study the effect of various metal oxides in oxygen and air atmosphere. CeO2 exhibited excellent catalytic property, and promoted the production of bio-oil yield up to a maximum of 49 wt% in 10 bar O2, whereas 31 wt% bio-oil was noticed in atmospheric air. GC-MS analysis of bio-oil showed that high selectivity towards acetosyringone was observed in the presence of air (70.5 area%) as compared to oxygen (48.1 area%). Herein, we have also applied transitional metals (Co, Mn and Cu) doped CeO2 catalysts. Compared to Cu and Mn, Co metal showed efficient activity that promoted the breaking of labile β-O-4 linkages via the conversion of Cα-OH in to carbonyl group in atmospheric air resulting in the formation of acetosyringone up to 78 area%. Moreover, it exhibited excellent catalytic activity up to four successive cycles. Catalyst has been characterized by XRD, BET, TEM, FT-IR and Raman spectroscopy.
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