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| 1 | Aqueous-phase catalytic hydrogenation of furfural to cyclopentanol over Cu-Mg-Al hydrotalcites derived catalysts:Model reaction for upgrading of bio-oil显示文摘A series of Cu-Mg-Al hydrotalcites derived oxides with a(Cu+Mg)/Al mole ratio of 3 and varied Cu/Mg mole ratio(from 0.07 to 0.30) were prepared by co-precipitation and calcination methods, then they were introduced to the hydrogenation of furfural in aqueous-phase. Effects of Cu/Mg mole ratio, reaction temperature, initial hydrogen pressure, reaction time and catalyst amount on the conversion rate of furfural as well as the selectivity toward desired product cyclopentanol were systematically investigated. The conversion of furfural over calcined hydrotalcite catalyst with a Cu/Mg mole ratio of 0.2 was up to 98.5% when the reaction was carried out under 140 ?C and the initial hydrogen pressure of 4 MPa for 10 h, while the selectivity toward cyclopentanol was up to 94.8%. The catalysts were characterized by XRD and SEM. XRD diffraction of all the samples showed characteristic pattern of hydrotalcite with varied peak intensity as a result of different Cu content. The catalytic activity was improved gradually with the increase of Cu component in the hydrotalcite. | Minghao Zhou Zuo Zeng Hongyan Zhu Guomin Xiao Rui Xiao | 2014 | Journal of Energy Chemistry2014，23，1： | 9 |
| 2 | 某纸厂能源利用的优化与废料再利用分析显示文摘为了缓解工业生产中过分依赖化石燃料的现象,利用可再生能源和废料再利用是能源优化的重要途径。以中国某纸厂为研究案例,通过实地考察中收集的数据和发现的问题,应用软件Eclipse建立该纸厂生产的模型系统并模拟其生产流程。首先,运用Eclipse/Mass Energy模块分析该纸厂生产中物量和能量的变化,寻找可能存在的能源物质;再对该纸厂生物质能源的生产进行量化处理,通过模拟得出这部分能量的具体数值;最后结合已找到的潜在能源设计该纸厂的优化方案,由Eclipse/Flow模块建立新的热电联产系统的供能模型。结果表明:在纸厂排放的废液'水处理2'中仍存在部分有机物,这部分物质可以生产沼气,代替煤燃烧供能,同时结合量化后的生物质能为纸厂供能,改进后的方案每年可以为该纸厂节约用煤18 259.3 t,实现28.9%的二氧化碳减排量。 | 粟重怡 黄惠兰 王耀东 黄晔 | 2015 | 广西大学学报(自然科学版)2015，40，3： | 2 |
| 3 | Direct conversion of corn cob to formic and acetic acids over nano oxide catalysts显示文摘Considering energy shortage, large molecules in corn cob and easy separation of solid catalysts, nano oxides are used to transform corn cob into useful chemicals. Because of the microcrystals, nano oxides offer enough accessible sites for cellulose, hemicellulose and monosaccharide from corn cob hydrolysis and oxidant. Chemical conversion of corn cob to organic acids is investigated over nano ceria, alumina, titania and zirconia under various atmospheres. Liquid products are mainly formic and acetic acids. A small amount of other compounds, such as D-xylose,D-glucose, arabinose and xylitol are also detected simultaneously. The yield of organic acids reaches 25%–29% over the nano oxide of ceria,zirconia and alumina with 3 h reaction time under 453 K and 1.2 MPa O2. The unique and fast conversion of corn cob is directly approached over the nano oxides. The results are comparative to those of biofermentation and offer an alternative method in chemically catalytic conversion of corn cob to useful chemicals in a one-pot chemical process. | Liyuan Cheng Hong Liu Yuming Cui Nianhua Xue Weiping Ding | 2014 | Journal of Energy Chemistry2014，23，1： | 1 |
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