铌掺杂提高钨酸盐氧化锆固体酸催化剂表面酸性制备5-羟甲基糠醛  

Improved Surface Acidity of Niobium Doped Tungstated-Zirconia Solid Acid Catalyst over Production of 5-Hydroxymethylfurfural

作　　者：王晓军[1,2] 鲁妮 付源益 逯畅 管美丽 王坤华 于昊[1,2] Xiaojun Wang;Ni Lu;Yuanyi Fu;Chang Lu;Meili Guan;Kunhua Wang;Hao Yu(College of Energy Storage Technology,Shandong University of Science and Technology,Qingdao 266590,China;College of Chemical and Biological Engineering,Shandong University of Science and Technology,Qing-dao 266590,China)

机构地区：[1]山东科技大学储能技术学院,青岛266590 [2]山东科技大学化学与生物工程学院,青岛266590

出　　处：《Chinese Journal of Chemical Physics》2023年第3期319-328,I0034-I0038,I0100,共16页化学物理学报（英文）

基　　金：supported by the Project of Shandong Province Higher Educational Young Inno-vative Talent Introduction and Cultivation Team(Hy-drogen energy chemistry innovation team);the Nation-al Natural Science Foundation of China(No.22105119);the Natural Science Foundation of Shandong Province(ZR2021QB016).

摘　　要：作为生物质资源和工业应用之间的重要桥梁,5-羟甲基糠醛(5-HMF)显示出绿色发展的潜能.但是生物质材料在绿色溶剂中转.化为5-HMF的表现仍然受限.本文报道了一种制备高效固体酸催化剂NbOr/WOy-ZrO_(2)以提高果糖转化率的方法.铌盐的引入导致铌氧化物的生成,提高了WOy-ZrO_(2)载体表面的酸性位点并且调整了布朗斯台德酸与路易斯酸的比例.随着NbOx/WOy-ZrO_(2)催化剂酸性的提高以及酸性中心的增加,果糖在水中的最高转化率达到99%.与此同时,5-HMF的产率和选择性在180°C,30分钟的条件下分别提高到50.1%和50.7%.本文提出的NbOr/WOy-ZrO_(2)催化剂策略为设计高效固体酸催化剂催化水中5-HMF的生成提供了-种新思路.The 5-hydroxymethylfurfural(5-HMF)acts as an important chemical intermediate to bridge the biomass resources and industrial applications,which shows the potential for green development.However,the perfor-mance of biomass materials conver-sion to 5-HMF is still limited in the green solvent.Herein,an effective ap-proach is reported to prepare the highly efficient solid acid catalysts,NbOx/WOy-ZrO_(2),to improve fruc-tose conversion.It is found that the introduction of Nb results in the generation of the niobium oxides,which improves acid sites and tunes the ratios of Brønsted acid and Lewis acid on the surface of the WOy-ZrO_(2) sup-port.With the acidity improvement and increasing acid sites of the NbOx/WOy-ZrO_(2),the highest fructose conversion is 99%in water.Meanwhile,the 5-HMF yield and the selectivity are also as high as 50.1%and 50.7%under the reaction temperature of 180°C for a short reac-tion time of 30 min.The proposed NbOx/WOy-ZrO_(2) catalyst strategy will not only open a new way for designing the solid acid catalysts to achieve high performance of the 5-HMF in the water,but also promote the green production of biomass and sustainable development in the future.

关 键 词：氧化铌 钨酸盐氧化锆固体酸 果糖 5-羟甲基糠醛 酸性位点 

分 类 号：O643.36[理学—物理化学] O626[理学—化学]