Catalytic hydrodeoxygenation of biomass-derived oxygenates to bio-fuels over Co-based bimetallic catalysts
Catalytic hydrodeoxygenation of biomass-derived oxygenates to bio-fuels over Co-based bimetallic catalysts
复制标题
钴基双金属催化剂将生物质衍生的含氧化合物催化加氢脱氧生产生物燃料
DOI：
10.1039/d0se00332h
复制
发表时间：
2020
影响因子：
5.6
通讯作者：
Zhao-Tie Liu
中科院分区：
文献类型：
--
作者：
Zhen-Hong He;Chong-Shan Jiang;Zhong-Yu Wang;Kuan Wang;Yong-Chang Sun;Man-Qing Yao;Zhu-Hui Li;Zhao-Tie Liu
传统化石燃料的快速消耗导致其储量急剧下降，并导致气候变化。可再生能源特别是生物燃料如2，5-二甲基呋喃（DMF）、甲基呋喃（MF）、γ-戊内酯（GVL）等的开发具有环境和经济效益。本文制备了多种钴基催化剂，并将其用于生物质含氧化合物的加氢脱氧反应。在Co金属催化剂中引入Zn物种，特别是Co/Zn摩尔比为5时，可明显提高催化剂的催化性能。例如，DMF、MF和GVL产率在Co 5 Zn 1 Ox催化期间分别达到高达94%、98%和77%，其分别远大于Co催化剂的74%、0%和23%。Co（5）Zn（1）O（x）的增强性能源于Co和Zn物种之间的强相互作用。具体地，ZnO的存在可以通过向Co物种提供电子并产生氧空位来稳定Co（2+）物种，导致Co（5）Zn（1）O（x）与Co（1）Zn（1）O（x）和Co（7）Zn（1）O（x）催化剂相比显示出最高的糠醛和糠醇吸附量。该催化剂具有良好的通用性和重复使用性，5-HMF到DMF的HDO反应为真正的非均相反应。本研究工作将拓展生物质催化剂在生物燃料合成和生物质资源利用中的应用。
The rapid consumption of conventional fossil fuels has caused a sharp decline in their reserves and led to climate change. Exploitation of renewable energy sources especially bio-fuels such as 2,5-dimethylfuran (DMF), methylfuran (MF), gamma-valerolactone (GVL),etc.has both environmental and economic benefits. In the present work, diverse Co-based bimetallic catalysts were prepared and used for catalyzing hydrodeoxygenation (HDO) of biomass-derived oxygenates. Co5Zn1Ox, obtained by the incorporation of Zn species into the Co metal catalyst especially with a Co/Zn molar ratio of 5, could enhance the catalytic performances obviously compared to the sole Co catalyst. For example, the DMF, MF, and GVL yields reached up to 94, 98, and 77% during the catalysis by Co5Zn1Ox, which were much greater than 74, 0, and 23% for the Co catalyst, respectively. The enhanced performances of Co(5)Zn(1)O(x)stem from the strong interaction between the Co and Zn species. Specifically, the presence of ZnO could stabilize Co(2+)species, by offering electrons to Co species and creating oxygen vacancies, resulting in Co(5)Zn(1)O(x)showing the highest adsorption amounts of furfural and furfuryl alcohol compared to Co(1)Zn(1)O(x)and Co(7)Zn(1)O(x)catalysts. Moreover, the catalyst showed good universality and reusability, and the HDO of 5-HMF to DMF proceeded in a true heterogeneous manner. The present work is believed to extend the application of bimetallic catalysts to the synthesis of bio-fuels and utilization of biomass materials.