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description Publicationkeyboard_double_arrow_right Article 2006 China (People's Republic of)Publisher:厦门大学《电化学》编辑部 Authors: YAN Zhi-yuan; XU Chang-wei; SHEN Pei-kang~;应用交替微波加热法制备碳载氧化物和Pd的复合催化剂,并以电化学方法研究这一新型催化剂在碱性条件下对甘油的氧化性能.实验表明,Pd/C催化剂对甘油的电化学氧化有较好活性,但氧化物复合的非铂催化剂对甘油的电化学氧化显示出更高的活性,相对于Pd/C催化剂,其氧化起始电位发生负移及峰电流大幅度提高.本工作还优化了氧化物与Pd的比例.结果证明,氧化物的加入使复合催化剂对甘油氧化产生了协同效应. ; Oxide and Pd on carbon composite catalysts have been prepared by intermittent microwave heating(IMH) method.The performance of the catalysts for glycerol oxidation in alkaline solution is studied by electrochemical techniques.It is shown that the Pd/C catalyst is active for glycerol electrooxidation.However,the oxide-Pd/C catalysts are even better in terms of the onset potential that is more negative and peak current density.The ratio of oxide to Pd is optimized according to the electrochemical measurement.The results reveal that the addition of oxide into the Pd/C induces the synergistic effect for glycerol electrooxidation. ; 作者联系地址:中山大学光电材料与技术国家重点实验室物理科学与工程技术学院,中山大学光电材料与技术国家重点实验室物理科学与工程技术学院,中山大学光电材料与技术国家重点实验室物理科学与工程技术学院 广东广州510275,广东广州510275,广东广州510275 ; Author's Address: *State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2014 China (People's Republic of)微生物油脂(microbialoils)又称单细胞油脂(singlecelloil,SCO),即微生物以碳水化合物、碳氢化合物和普通油脂为碳源、氮源、辅以无机盐生产的油脂和另一些有商业价值的脂质。随着人口的增长、社会的进步使油脂需求量与自然资源短缺的矛盾日益加剧,环境污染日趋严重,开发新型油脂资源及清洁能源是当务之急。微生物生产油脂具有原料来源丰富、可再生、成本低、周期短、环境友好等优点,已引起人们的高度关注。开展微生物油脂的研究对解决人类面临的资源短缺、环境恶化等现实问题具有重要意义。 本文针对当前所关注的有关深海微生物、生物能源、废物综合利用3个热点问题,旨在寻找一株可以高效利用廉价碳源. ; Microbial oils (or single cell oil) refers to the oil produced by microorganisms with carbohydrate source (carbohydrates, hydrocarbons and ordinary oil), nitrogen sources and inorganic chemicals. With the population and social developing. New types of cleaning energy resource is key to solve problems among oil needs, shortage of natural resource and the serious environmental pollution. Now, many . ; 学位:理学硕士 ; 院系专业:生命科学学院_生物化学与分子生物学 ; 学号:21620101152307
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2000 China (People's Republic of)Publisher:厦门大学《电化学》编辑部 Authors: LIU Jian_hua; YANG Jing_wu; TANG Zhi_yuan;应用微电极恒电位阶跃法研究了在Ni(OH) 2 电极的阳极及阴极过程反应中 ,温度对球形Ni(OH) 2 的质子扩散系数和表观扩散活化能的影响 .研究表明 ,于Ni(OH) 2 中掺杂Co和Co +Zn后可降低其阳极和阴极过程的表观扩散活化能 ,增大质子扩散系数 ,掺Co的效果更加明显 ,而掺Zn则增大表观扩散活化能 ,降低了扩散系数 .这说明前者的掺入其作用是降低了质子扩散阻力使电极的反应活性增加、而后者的掺入则是增大了质子的扩散阻力而使电极反应活性降低 . ; The Chronoamperometry of powder spherical Ni(OH) 2 microelectrode was used to study the proton diffusion coefficients of Ni(OH) 2. The proton diffusion coeefficients and the apparent diffusion active energy in anode and cathode processes at different temperature were obtained. Compared with pure Ni(OH) 2, the apparent diffusion active energy( E a) of Ni(OH) 2 doped with Co and Co+Zn was decreased and the diffusion constant( D o) was increased in the anode and the cathode processes, respectively, the effect of Co was greater. In contrast, for Ni(OH) 2 doped with Zn, its E a was increased and D o was decreased. Therefore, it was concluded that the reaction activity of Ni(OH) 2 electrode doped by Co was enhanced due to the reduction of proton diffusion resistance, while the reaction activity of electrode doped by Zn was weakened due to the increase of proton diffusion resistance. ; 作者联系地址:天津大学化工学院!天津300072,天津大学化工学院!天津300072,天津大学化工学院!天津300072 ; Author's Address: School of Chem. Engin. and Techn., Tianjin Univ., Tianjian 300072,China
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2016 China (People's Republic of)1,3-丙二醇(1,3-PD)是一种重要的化工原料,具有广泛的应用领域。发酵法生产1,3-PD以利用可再生资源等优点日益受到重视。大部分研究以纯甘油为底物,成本高,如果以粗甘油为底物,可大大降低生产成本。 本论文的研究目的是以粗甘油为底物,以Clostridiumbutyricum(丁酸梭状芽孢杆菌)为生产菌株,通过厌氧发酵生产1,3-PD,在粗甘油预处理、提高菌体浓度、提高单位菌体生产能力、延长发酵周期和建立动力学模型这几个方面进行了研究,主要结果如下: (1)分批发酵结果表明粗甘油对发酵有明显的抑制作用。用粉状活性炭对粗甘油进行吸附预处理可显著降低抑制作用。通过均匀设计对预处理条件进行. ; 1,3-Propanediol (1,3-PD) is an important chemicals with wide range of applications. Microbial production of 1,3-PD has attracted wide attentions in that it uses renewable resources. Most studies were done using pure glycerol and its cost was high. The cost could be reduced if raw glycerol is used. In this paper, raw glycerol was used for 1,3-PD fermentation by Clostridium butyricum under anaerobi. ; 学位:工学博士 ; 院系专业:化学化工学院_工业催化 ; 学号:20620090153293
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2013 China (People's Republic of)随着化石能源的全球性枯竭和温室效应的逐步加深,各国之间的能源争夺愈演愈烈,在这样的现实背景之下,能源危机的警钟频频敲响。作为世界上最大的发展中国家,中国是一个能源生产和消费大国。在能源生产方面,新中国成立60年以来,中国一次能源生产总量从1949年的2334万吨标准煤,增加到2010年的296916万吨标准煤,增长了126.21倍,成为世界上第一大能源生产国。而在能源消耗方面,中国现在已超越美国,成为世界能源消耗量排名第一的国家,其中以煤炭消耗为主,其使用量占全球的48%。众所周知,能源消耗所排放的二氧化碳造成温室气体激增,导致了全球气候异常,我国二氧化碳排放量目前也超越美国,成为头号二氧化碳. ; As the fossil energy global exhaustion and greenhouse gas effect gradually deepening, the energy between countries for the increasingly fierce, In such a realistic background, the energy crisis alarm sounded again and again. As the world's largest developing country, China is a major energy producers and consumers. In terms of energy production, since the new China was founded 60 years, China's to. ; 学位:经济学博士 ; 院系专业:经济学院_统计学 ; 学号:15420100153751
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Report 2017 China (People's Republic of)为了研究碱性木质素对玉米秸秆成型特性的影响及其软化黏结作用,以玉米秸秆为原料进行压缩成型,考察添加碱性木质素对成型效果的影响。结果表明:碱性木质素能够促进成型,改善成型效果,当添加量由0提高到20%时,玉米秸秆成型颗粒的松弛密度由1 005 kg/m3增大到1 157 kg/m3,径向最大抗压力由1 353 N增大到1 930 N。采用DSC对玉米秸秆和碱性木质素的热转变特征温度进行了研究,结果表明:玉米秸秆和碱性木质素的玻璃态转变温度分别在92.5~103℃、61~137℃之间;在玻璃态转变过程中,100℃时存在比能耗最低点;100~130℃为碱性木质素起较好黏结作用的温度范围。采用SEM对颗粒微观形态进行观察,发现碱性木质素发生玻璃态转变后在颗粒内部能够形成“局部熔融”和“机械互锁”两种结合形式,适合的碱性木质素添加量为10%~15%。
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2009 China (People's Republic of)本文从可再生能源利用的动因及目的等方面出发,阐释了可再生能源法律概念的应有之义,提出了可再生能源的法律概念。 ; This article from renewable energy source aspects and so on use's agent and goal embarked, explains the renewable energy source legal concept to have righteousness, put forward the renewable energy source legal concept.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2012 China (People's Republic of)5-羟甲基糠醛(5-HMf)被认为是一种非常重要的平台化合物。利用离子液体介导制备5-HMf的研究已经引起了人们越来越广泛的重视,并取得了较为理想的研究成果。本文对离子液体介导制备5-HMf的研究成果进行了系统的归纳和总结,着重介绍了离子液体作为反应溶剂和催化剂在5-HMf制备过程中的应用以及离子液体介导制备5-HMf的形成机理和影响因素,并对离子液体介导制备5-HMf的研究前景进行了展望,以期为5-HMf的进一步研究提供思路和参考。 ; 5-Hydroxymethylfurfural(5-HMF) is considered as a very important biomass-based platform compound that can be used to synthesize a broad range of liquid fuels and chemicals,which are mainly derived from fossil resources so far.The study of the production of 5-HMF in the presence of ionic liquids has increasingly attracted more attention.In this review,the recent achievements of ionic liquids-mediated formation of 5-HMF are systematically summarized,including applications of ionic liquids as reaction solvents and catalysts in the production of 5-HMF,influence factors and formation mechanisms in the ionic liquids-mediated formation of 5-HMF.The future research trends of ionic liquids-mediated formation of 5-HMF are suggested. ; 国家重点基础研究发展计划(973)项目(No.2010CB732201);国家自然科学基金项目(No.21106121);中央高校基本业务费专项资金项目(No.2010121077)资助
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2012 China (People's Republic of)随着能源的枯竭,新能源的开发已成为社会热点。其中纤维素生物质转化生产燃料乙醇因为其原材料丰富和持续可再生而倍受重视。但其经济性特别是能耗问题是该过程工业化的关键。酶水解法纤维素生物质转化生产燃料乙醇是已实现工业化的技术路线之一,由酶水解法的特性所决定,其中各转化单元都在水溶液中进行,因此实现低能耗浓缩糖化液对酶水解法纤维素生物质转化生产燃料乙醇的经济性意义重大,而膜分离是最为合适的工艺之一。本文围绕膜分离方法浓缩糖化液过程,利用商业卷式纳滤膜组件研究了高浓度糖溶液纳滤分离过程,并进行模型构建和理论分析,为提高酶水解法纤维素生物质转化生产燃料乙醇的经济性提供技术支持,为高浓度溶质水溶液膜分离效率. ; As the energy exhausting, the discovery and development of new energy resources has become the hot topic in world wide. Cellulosic bioconversion into ethanol has been paid much attention due to the abundant amount and renewable capacity of materials. However, the economy especially energy consumption control of the process is the key and barrier for it toward industrialization. Although ethanol pr. ; 学位:工学硕士 ; 院系专业:化学化工学院化学工程与生物工程系_化学工艺 ; 学号:20620091151283
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2011 China (People's Republic of)中国是目前世界上二氧化碳(CO2)排放量最大的国家,能源消费产生的二氧化碳占总排放量的绝大部分。由于中国正处于城市化、工业化快速发展的时期,城市基础设施建设持续扩大,居民消费水平提高,促使能源消费和二氧化碳排放不断增加。二氧化碳浓度的增加会导致全球气温升高。在全球应对气候变化的合作中,中国一方面是碳排放大国,另一方面人均历史累积排放量较低,需要承担“共同而有区别”的责任。 本文以系统工程、数理人口学、发展经济学、环境经济学等多学科综合性的研究方法,对城市化、工业化、气候变化和环境容量约束下的能源消费和二氧化碳排放进行系统研究。引入地理信息系统中的“人口重心”和“经济重心”概念,对人口迁移模型. ; China is the country that emits most CO2 in the world. Energy-related CO2 Emissions contributes most share of total emissions. As a developing country,China is undergoing urbanization and industrialization on an unprecedented scale, urban infrastructure construction is further strengthened, and people’s consumption level is constantly improved, which need huge amounts of energy, and will emit more. ; 学位:工学博士 ; 院系专业:信息科学与技术学院自动化系_系统工程 ; 学号:23220070154005
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description Publicationkeyboard_double_arrow_right Article 2006 China (People's Republic of)Publisher:厦门大学《电化学》编辑部 Authors: YAN Zhi-yuan; XU Chang-wei; SHEN Pei-kang~;应用交替微波加热法制备碳载氧化物和Pd的复合催化剂,并以电化学方法研究这一新型催化剂在碱性条件下对甘油的氧化性能.实验表明,Pd/C催化剂对甘油的电化学氧化有较好活性,但氧化物复合的非铂催化剂对甘油的电化学氧化显示出更高的活性,相对于Pd/C催化剂,其氧化起始电位发生负移及峰电流大幅度提高.本工作还优化了氧化物与Pd的比例.结果证明,氧化物的加入使复合催化剂对甘油氧化产生了协同效应. ; Oxide and Pd on carbon composite catalysts have been prepared by intermittent microwave heating(IMH) method.The performance of the catalysts for glycerol oxidation in alkaline solution is studied by electrochemical techniques.It is shown that the Pd/C catalyst is active for glycerol electrooxidation.However,the oxide-Pd/C catalysts are even better in terms of the onset potential that is more negative and peak current density.The ratio of oxide to Pd is optimized according to the electrochemical measurement.The results reveal that the addition of oxide into the Pd/C induces the synergistic effect for glycerol electrooxidation. ; 作者联系地址:中山大学光电材料与技术国家重点实验室物理科学与工程技术学院,中山大学光电材料与技术国家重点实验室物理科学与工程技术学院,中山大学光电材料与技术国家重点实验室物理科学与工程技术学院 广东广州510275,广东广州510275,广东广州510275 ; Author's Address: *State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2014 China (People's Republic of)微生物油脂(microbialoils)又称单细胞油脂(singlecelloil,SCO),即微生物以碳水化合物、碳氢化合物和普通油脂为碳源、氮源、辅以无机盐生产的油脂和另一些有商业价值的脂质。随着人口的增长、社会的进步使油脂需求量与自然资源短缺的矛盾日益加剧,环境污染日趋严重,开发新型油脂资源及清洁能源是当务之急。微生物生产油脂具有原料来源丰富、可再生、成本低、周期短、环境友好等优点,已引起人们的高度关注。开展微生物油脂的研究对解决人类面临的资源短缺、环境恶化等现实问题具有重要意义。 本文针对当前所关注的有关深海微生物、生物能源、废物综合利用3个热点问题,旨在寻找一株可以高效利用廉价碳源. ; Microbial oils (or single cell oil) refers to the oil produced by microorganisms with carbohydrate source (carbohydrates, hydrocarbons and ordinary oil), nitrogen sources and inorganic chemicals. With the population and social developing. New types of cleaning energy resource is key to solve problems among oil needs, shortage of natural resource and the serious environmental pollution. Now, many . ; 学位:理学硕士 ; 院系专业:生命科学学院_生物化学与分子生物学 ; 学号:21620101152307
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2000 China (People's Republic of)Publisher:厦门大学《电化学》编辑部 Authors: LIU Jian_hua; YANG Jing_wu; TANG Zhi_yuan;应用微电极恒电位阶跃法研究了在Ni(OH) 2 电极的阳极及阴极过程反应中 ,温度对球形Ni(OH) 2 的质子扩散系数和表观扩散活化能的影响 .研究表明 ,于Ni(OH) 2 中掺杂Co和Co +Zn后可降低其阳极和阴极过程的表观扩散活化能 ,增大质子扩散系数 ,掺Co的效果更加明显 ,而掺Zn则增大表观扩散活化能 ,降低了扩散系数 .这说明前者的掺入其作用是降低了质子扩散阻力使电极的反应活性增加、而后者的掺入则是增大了质子的扩散阻力而使电极反应活性降低 . ; The Chronoamperometry of powder spherical Ni(OH) 2 microelectrode was used to study the proton diffusion coefficients of Ni(OH) 2. The proton diffusion coeefficients and the apparent diffusion active energy in anode and cathode processes at different temperature were obtained. Compared with pure Ni(OH) 2, the apparent diffusion active energy( E a) of Ni(OH) 2 doped with Co and Co+Zn was decreased and the diffusion constant( D o) was increased in the anode and the cathode processes, respectively, the effect of Co was greater. In contrast, for Ni(OH) 2 doped with Zn, its E a was increased and D o was decreased. Therefore, it was concluded that the reaction activity of Ni(OH) 2 electrode doped by Co was enhanced due to the reduction of proton diffusion resistance, while the reaction activity of electrode doped by Zn was weakened due to the increase of proton diffusion resistance. ; 作者联系地址:天津大学化工学院!天津300072,天津大学化工学院!天津300072,天津大学化工学院!天津300072 ; Author's Address: School of Chem. Engin. and Techn., Tianjin Univ., Tianjian 300072,China
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2016 China (People's Republic of)1,3-丙二醇(1,3-PD)是一种重要的化工原料,具有广泛的应用领域。发酵法生产1,3-PD以利用可再生资源等优点日益受到重视。大部分研究以纯甘油为底物,成本高,如果以粗甘油为底物,可大大降低生产成本。 本论文的研究目的是以粗甘油为底物,以Clostridiumbutyricum(丁酸梭状芽孢杆菌)为生产菌株,通过厌氧发酵生产1,3-PD,在粗甘油预处理、提高菌体浓度、提高单位菌体生产能力、延长发酵周期和建立动力学模型这几个方面进行了研究,主要结果如下: (1)分批发酵结果表明粗甘油对发酵有明显的抑制作用。用粉状活性炭对粗甘油进行吸附预处理可显著降低抑制作用。通过均匀设计对预处理条件进行. ; 1,3-Propanediol (1,3-PD) is an important chemicals with wide range of applications. Microbial production of 1,3-PD has attracted wide attentions in that it uses renewable resources. Most studies were done using pure glycerol and its cost was high. The cost could be reduced if raw glycerol is used. In this paper, raw glycerol was used for 1,3-PD fermentation by Clostridium butyricum under anaerobi. ; 学位:工学博士 ; 院系专业:化学化工学院_工业催化 ; 学号:20620090153293
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2013 China (People's Republic of)随着化石能源的全球性枯竭和温室效应的逐步加深,各国之间的能源争夺愈演愈烈,在这样的现实背景之下,能源危机的警钟频频敲响。作为世界上最大的发展中国家,中国是一个能源生产和消费大国。在能源生产方面,新中国成立60年以来,中国一次能源生产总量从1949年的2334万吨标准煤,增加到2010年的296916万吨标准煤,增长了126.21倍,成为世界上第一大能源生产国。而在能源消耗方面,中国现在已超越美国,成为世界能源消耗量排名第一的国家,其中以煤炭消耗为主,其使用量占全球的48%。众所周知,能源消耗所排放的二氧化碳造成温室气体激增,导致了全球气候异常,我国二氧化碳排放量目前也超越美国,成为头号二氧化碳. ; As the fossil energy global exhaustion and greenhouse gas effect gradually deepening, the energy between countries for the increasingly fierce, In such a realistic background, the energy crisis alarm sounded again and again. As the world's largest developing country, China is a major energy producers and consumers. In terms of energy production, since the new China was founded 60 years, China's to. ; 学位:经济学博士 ; 院系专业:经济学院_统计学 ; 学号:15420100153751
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Report 2017 China (People's Republic of)为了研究碱性木质素对玉米秸秆成型特性的影响及其软化黏结作用,以玉米秸秆为原料进行压缩成型,考察添加碱性木质素对成型效果的影响。结果表明:碱性木质素能够促进成型,改善成型效果,当添加量由0提高到20%时,玉米秸秆成型颗粒的松弛密度由1 005 kg/m3增大到1 157 kg/m3,径向最大抗压力由1 353 N增大到1 930 N。采用DSC对玉米秸秆和碱性木质素的热转变特征温度进行了研究,结果表明:玉米秸秆和碱性木质素的玻璃态转变温度分别在92.5~103℃、61~137℃之间;在玻璃态转变过程中,100℃时存在比能耗最低点;100~130℃为碱性木质素起较好黏结作用的温度范围。采用SEM对颗粒微观形态进行观察,发现碱性木质素发生玻璃态转变后在颗粒内部能够形成“局部熔融”和“机械互锁”两种结合形式,适合的碱性木质素添加量为10%~15%。
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2009 China (People's Republic of)本文从可再生能源利用的动因及目的等方面出发,阐释了可再生能源法律概念的应有之义,提出了可再生能源的法律概念。 ; This article from renewable energy source aspects and so on use's agent and goal embarked, explains the renewable energy source legal concept to have righteousness, put forward the renewable energy source legal concept.
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more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2012 China (People's Republic of)5-羟甲基糠醛(5-HMf)被认为是一种非常重要的平台化合物。利用离子液体介导制备5-HMf的研究已经引起了人们越来越广泛的重视,并取得了较为理想的研究成果。本文对离子液体介导制备5-HMf的研究成果进行了系统的归纳和总结,着重介绍了离子液体作为反应溶剂和催化剂在5-HMf制备过程中的应用以及离子液体介导制备5-HMf的形成机理和影响因素,并对离子液体介导制备5-HMf的研究前景进行了展望,以期为5-HMf的进一步研究提供思路和参考。 ; 5-Hydroxymethylfurfural(5-HMF) is considered as a very important biomass-based platform compound that can be used to synthesize a broad range of liquid fuels and chemicals,which are mainly derived from fossil resources so far.The study of the production of 5-HMF in the presence of ionic liquids has increasingly attracted more attention.In this review,the recent achievements of ionic liquids-mediated formation of 5-HMF are systematically summarized,including applications of ionic liquids as reaction solvents and catalysts in the production of 5-HMF,influence factors and formation mechanisms in the ionic liquids-mediated formation of 5-HMF.The future research trends of ionic liquids-mediated formation of 5-HMF are suggested. ; 国家重点基础研究发展计划(973)项目(No.2010CB732201);国家自然科学基金项目(No.21106121);中央高校基本业务费专项资金项目(No.2010121077)资助
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2012 China (People's Republic of)随着能源的枯竭,新能源的开发已成为社会热点。其中纤维素生物质转化生产燃料乙醇因为其原材料丰富和持续可再生而倍受重视。但其经济性特别是能耗问题是该过程工业化的关键。酶水解法纤维素生物质转化生产燃料乙醇是已实现工业化的技术路线之一,由酶水解法的特性所决定,其中各转化单元都在水溶液中进行,因此实现低能耗浓缩糖化液对酶水解法纤维素生物质转化生产燃料乙醇的经济性意义重大,而膜分离是最为合适的工艺之一。本文围绕膜分离方法浓缩糖化液过程,利用商业卷式纳滤膜组件研究了高浓度糖溶液纳滤分离过程,并进行模型构建和理论分析,为提高酶水解法纤维素生物质转化生产燃料乙醇的经济性提供技术支持,为高浓度溶质水溶液膜分离效率. ; As the energy exhausting, the discovery and development of new energy resources has become the hot topic in world wide. Cellulosic bioconversion into ethanol has been paid much attention due to the abundant amount and renewable capacity of materials. However, the economy especially energy consumption control of the process is the key and barrier for it toward industrialization. Although ethanol pr. ; 学位:工学硕士 ; 院系专业:化学化工学院化学工程与生物工程系_化学工艺 ; 学号:20620091151283
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2011 China (People's Republic of)中国是目前世界上二氧化碳(CO2)排放量最大的国家,能源消费产生的二氧化碳占总排放量的绝大部分。由于中国正处于城市化、工业化快速发展的时期,城市基础设施建设持续扩大,居民消费水平提高,促使能源消费和二氧化碳排放不断增加。二氧化碳浓度的增加会导致全球气温升高。在全球应对气候变化的合作中,中国一方面是碳排放大国,另一方面人均历史累积排放量较低,需要承担“共同而有区别”的责任。 本文以系统工程、数理人口学、发展经济学、环境经济学等多学科综合性的研究方法,对城市化、工业化、气候变化和环境容量约束下的能源消费和二氧化碳排放进行系统研究。引入地理信息系统中的“人口重心”和“经济重心”概念,对人口迁移模型. ; China is the country that emits most CO2 in the world. Energy-related CO2 Emissions contributes most share of total emissions. As a developing country,China is undergoing urbanization and industrialization on an unprecedented scale, urban infrastructure construction is further strengthened, and people’s consumption level is constantly improved, which need huge amounts of energy, and will emit more. ; 学位:工学博士 ; 院系专业:信息科学与技术学院自动化系_系统工程 ; 学号:23220070154005
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