Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, China.
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, China.
Bioresour Technol. 2021 Oct;337:125476. doi: 10.1016/j.biortech.2021.125476. Epub 2021 Jul 1.
This paper proposed a novel method for modification of dolomite (Do) using the leaching solution derived from the spent ternary LIBs. During catalytic pyrolysis of biomass, the modified Do showed a good performance on both reducing the activation energy and upgrading the volatile products. The apparent activation energy was decreased from 201 to 180 kJ/mol for the cellulose pyrolysis, and it was decreased from 80 to 75 kJ/mol for the lignin pyrolysis. The cellulose pyrolysis with the modified Do could significantly promote the conversion of anhydrosugars into small-molecule components (e.g., ketones). Meanwhile, the Do modified by transition-metal (e.g., Mn, Co, Ni) oxides had a high catalytic activity in cracking phenols (main tar precursors) to hydrocarbons (e.g., aromatics) during the lignin pyrolysis. The modified Do inhibited the production of phenols (from 50% to 5.8%) and enhanced the production of hydrocarbons (from 0.6% to 30.3%).
本文提出了一种利用废旧三元 LIBs 浸出液对白云石（Do）进行改性的新方法。在生物质催化热解过程中，改性白云石在降低纤维素热解的活化能和提高挥发分产物方面均表现出良好的性能。改性白云石使纤维素热解的表观活化能从 201 kJ/mol 降低到 180 kJ/mol，使木质素热解的表观活化能从 80 kJ/mol 降低到 75 kJ/mol。用改性白云石进行纤维素热解，可以显著促进脱水糖转化为小分子成分（如酮）。同时，过渡金属（如 Mn、Co、Ni）氧化物改性的白云石在木质素热解过程中对苯酚（主要的焦油前体）裂化生成碳氢化合物（如芳烃）具有很高的催化活性。改性白云石抑制了苯酚（从 50%降至 5.8%）的生成，提高了碳氢化合物（从 0.6%增至 30.3%）的生成。
