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Synthesis of Ceria and Sulfated Zirconia Catalysts Supported on Mesoporous SBA-15 toward Glucose Conversion to 5-Hydroxymethylfurfural in a Green Isopropanol-Mediated System
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-01-30 00:00:00 , DOI: 10.1021/acs.iecr.7b04671 Yunlei Zhang 1 , Qingang Xiong 2 , Yao Chen 3 , Meng Liu 1 , Pei Jin 1 , Yongsheng Yan 1 , Jianming Pan 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-01-30 00:00:00 , DOI: 10.1021/acs.iecr.7b04671 Yunlei Zhang 1 , Qingang Xiong 2 , Yao Chen 3 , Meng Liu 1 , Pei Jin 1 , Yongsheng Yan 1 , Jianming Pan 1
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In this work, a facile synthesis of ceria and sulfated zirconia (SZ) incorporated SBA-15 catalyst was conducted. The supported SZ reveals promising Brønsted/Lewis acid and relatively low base strength, and the base strength of the catalyst is significantly enhanced by introducing highly dispersed ceria into the network of SZ incorporated SBA-15. Systematic study of catalyst activities were carried out in iPrOH/DMSO solvent conversion of glucose to 5-hydroxymethylfurfural (HMF). It is found that the isomerization process of glucose to fructose was promoted by coexisting base and Lewis acid sites, and the dehydration reaction of reactively formed fructose to HMF was directed by Brønsted acid sites. Up to 66.5% HMF yield and 70.8% selectivity can be obtained in a 90 vol % iPrOH-mediated DMSO solvent. Through the reaction system developed in this paper, use of a large amount of environmentally hazardous solvent can be avoided, and a new method of large-scale economically viable processes for biomass conservation is provided.
中文翻译：
在绿色异丙醇介导的系统中，介孔SBA-15负载的二氧化铈和硫酸氧化锆催化剂的合成将葡萄糖转化为5-羟甲基糠醛
在这项工作中，进行了二氧化铈和硫酸盐氧化锆（SZ）掺入的SBA-15催化剂的简便合成。负载的SZ展现出令人鼓舞的布朗斯台德/路易斯酸和较低的碱强度，并且通过将高度分散的二氧化铈引入掺入SZ-15的SZ网络中，可以显着提高催化剂的碱强度。在葡萄糖的iPrOH / DMSO溶剂转化为5-羟甲基糠醛（HMF）中进行了催化剂活性的系统研究。发现碱和路易斯酸位点的共存促进了葡萄糖向果糖的异构化过程，而布朗斯台德酸位点则指导了反应生成的果糖向HMF的脱水反应。在90％（体积）iPrOH介导的DMSO溶剂中，可以获得高达66.5％的HMF收率和70.8％的选择性。
更新日期：2018-01-30
中文翻译：
在绿色异丙醇介导的系统中，介孔SBA-15负载的二氧化铈和硫酸氧化锆催化剂的合成将葡萄糖转化为5-羟甲基糠醛
在这项工作中，进行了二氧化铈和硫酸盐氧化锆（SZ）掺入的SBA-15催化剂的简便合成。负载的SZ展现出令人鼓舞的布朗斯台德/路易斯酸和较低的碱强度，并且通过将高度分散的二氧化铈引入掺入SZ-15的SZ网络中，可以显着提高催化剂的碱强度。在葡萄糖的iPrOH / DMSO溶剂转化为5-羟甲基糠醛（HMF）中进行了催化剂活性的系统研究。发现碱和路易斯酸位点的共存促进了葡萄糖向果糖的异构化过程，而布朗斯台德酸位点则指导了反应生成的果糖向HMF的脱水反应。在90％（体积）iPrOH介导的DMSO溶剂中，可以获得高达66.5％的HMF收率和70.8％的选择性。
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