碳化条件对碳微球结构的影响及其性能评价
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摘要
以葡萄糖为碳源,直接水热合成法制备碳微球。利用扫描电镜(SEM)和傅里叶变换红外(FT-IR)光谱仪对碳微球进行表征,探究碳化条件对碳微球结构的影响。结果表明,葡萄糖经过碳化由棒状变成球状,碳化温度180℃和碳化时间7 h条件下制备的碳微球结构较均匀,并且含有—OH及—COOH官能团,将制备的催化剂用于纤维素水解时,水解率最高达46. 22%。
Carbon microspheres were prepared by direct hydrothermal synthesis using glucose as a carbon source and characterized by scanning electron microscopy( SEM) and Fourier transform infrared( FT-IR) spectrometer. The effects of carbonization conditions on structure of carbon microspheres were investigated. The results showed that the glucose changed from rod-like structure to spherical shape through carbonization. The carbon microspheres prepared under carbonization temperature of 180 ℃ and carbonization time of 7 h had uniform structure containing —OH, —COOH functional groups. Hydrolysis rate was up to 46. 22% when the prepared carbon microspheres were used for cellulose hydrolysis.
Carbon microspheres were prepared by direct hydrothermal synthesis using glucose as a carbon source and characterized by scanning electron microscopy( SEM) and Fourier transform infrared( FT-IR) spectrometer. The effects of carbonization conditions on structure of carbon microspheres were investigated. The results showed that the glucose changed from rod-like structure to spherical shape through carbonization. The carbon microspheres prepared under carbonization temperature of 180 ℃ and carbonization time of 7 h had uniform structure containing —OH, —COOH functional groups. Hydrolysis rate was up to 46. 22% when the prepared carbon microspheres were used for cellulose hydrolysis.
引文
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[4]魏静,褚云,蒋国民,等.水热碳化法制备碳微球[J].功能材料,2014,45(z2):136-143.Wei Jing,Zhu Yun,Jiang Guomin,et al.Preparation of carbon microspheres via hydrothermal carbonization[J].Journal of Functional Materials,2014,45(2):136-143.
[5]朱秋荣,侯文生,史晟,等.碳微球的研究进展[J].化工进展,2014,33(7):1780-1785.Zhu Qiurong,Hou Wensheng,Shi Sheng,et al.Research progress in carbon microspheres[J].Chemical Industry and Engineering Progress,2014,33(7):1780-1785.
[6]LüP M,Xiong Z H,Chang J.An experimental study on biomass air steam gasificatio in a fuidized bed[J].Bioresource Technology,2004,95(1):95-101.
[7]Hu Bo,Wang Kan,Wu Liheng,et al.Engineering carbon materials from the hydrothermal carbonization process of biomass[J].Advanced Materials,2010,22(7):813-828.
[8]张艳勤.以淀粉为碳源的碳微球制备及性能测试[D].天津:天津工业大学,2015.
[9]陈诗渊,曾丹林,裴阳,等.碳基固体酸微球的制备及催化性能研究[J].现代化工,2016,36(4):89-94.Chen Shiyuan,Zeng Danlin,Pei Yang,et al.Preparation and catalytic performance of carbon-based solid acid microspheres[J].Modern Chemical Industry,2016,36(4):89-94.
[10]Heilmann S M,Ted Davis H.Hydrothermal carbonization of microalgae[J].Biomass&Bioenergy,2010,34(6):875-882.
[11]Cui Xianjin,Antonietti M,Yu Shuhong.Structural effects of iron oxide nanoparticles and iron ions on the hydrothermal carbonization of starch and rice carbohydrates[J].Small,2006,2(6):756-759.
[12]Omotola Babajide,Nicholas Musyoka,Leslie Petrik,et al.Novel zeolite Na-X synthesized from fly ash as a heterogeneous catalyst in biodiesel production[J].Catalysis Today,2012,190:54-60.
[13]李芬.碳微球和一维Ag/C纳米复合材料的制备[D].山西:太原理工大学,2015.Li Fen.Preparation of carbon microspheres and onedimen sional Ag/C nanocomposites[D].Shanxi:Taiyuan University of Technology,2015.
[14]陶志银.基于葡萄糖的几种功能微/纳米材料的制备、表征及性质研究[D].安徽:安徽大学,2010.
[15]高晓月.纤维素碳微球的水热法制备及电化学性能的研究[D].山西:太原理工大学,2012.Gao Xiaoyue.Preparation and electrochemical performance of cellulose-carbon microspheres via hydrothermal carbonization[D].Shanxi:Taiyuan University of Technology,2012.