【摘 要】
：
To promote the utilization of windmill palm(WP)fibers(Trachycarpus fortunei)for value-added materials,activated carbon fibers(ACFs)were prepared using WP as precursor by water steam activation.The eff
【机 构】
：
MOE Key Laboratory of Wooden Material Science and Application,Beijing Forestry University,Beijing,10
【出 处】
：
第六届全国生物质材料科学与技术学术研讨会
论文部分内容阅读
To promote the utilization of windmill palm(WP)fibers(Trachycarpus fortunei)for value-added materials,activated carbon fibers(ACFs)were prepared using WP as precursor by water steam activation.The effect of temperature in term of porous texture were identified through Scanning electron microscopy(SEM),nitrogen adsorption-desorption and Mercury intrusion porosimetry.The results showed that ACFs prepared at relative high temperature presented more cracked and collapsed surfaces and lower yield because of violent reaction during activation.With the increase of temperature,more micropores were generated,but then were reduced due to the conversion of partial micropores into mesopores.ACFs with the highest special surface area of 1320 m2/g and total pore volume of 1.416 cm3/g were obtained at the activation temperature of 850oC.Accordingly,WP fibers were considered to be a promising precursor for ACFs production.
其他文献
通过对北戴河主要旅游景点的园林树种的调查,运用AHP层次分析法对北戴河主要旅游景区内的绿化树种进行了适应性评价.结果表明:北戴河主要旅游景区(碣石园、平水桥公园、奥林匹克大道公园、联峰山公园、鸽子窝公园、怪楼奇缘、碧螺塔公园、秦行宫遗址)园林绿化树种总计110种,其中适应性综合评价结Ⅰ级树种有25种,综合评价Ⅱ级树种有48种,综合评价Ⅲ级树种有28种,综合评价Ⅳ级树种有9种.观赏性能的权重仅次于抗
杭州市古树名木信息系统的构建将为广大市民了解杭州市古树名木的信息提供信息来源，也为古树名木的监管和复壮提供有力支持，进一步推动古树名木的现代化管理。构建杭州市古树名木信息系统，对长期积累的数据进行信息化、数字化和知识化研究，将对古树名木的监管保护产生重大意义。本系统具体了树木的基本属性和动态属性，涵盖了树木的各方面和各个时间段的信息，并可扩展数据结构，为古树名木监管的可操作性奠定了基础。本系统将古
为探明蕙兰的花香气成分及其相对含量,本文以贵州产蕙兰为材料,采用顶空固相微萃取(HS-SPME)和气相色谱-质谱联用(GC-MS)技术,从蕙兰花香气中共检测鉴定57种挥发性成分,主要包括烷烃类、醇类、醛类、酮类、萜烯类及芳香族化合物.其中萜烯类化合物种类最多,有26种,相对百分含量也最高;2-3-蒎烯、α-蛇麻烯的相对百分含量最高,为15.340％和17.045％,可认为是该种蕙兰的主要挥发性物质
In recent years,research into supercapacitors has experienced an enormous growth due to their high energy-density,large capacitance,rapid charge/discharge capability and long life-cycle stability,bein
In this study,reduced graphene oxide(rGO)was prepared by a green reductant,Vitamin C.The effects of reaction time,reaction temperature and reactants ratio on the electrical conductivity of obtained rG
Graphene nanosheet,a type of two-dimensional (2-D) materials,is the basic composition unit of fullerenes,carbon nanotubes and graphite [1-2].Due to the superior mechanical and electronic properties as
竹丝作为室内装饰材料,为确保其安全使用,必须对其进行阻燃处理.本研究采用锥形量热仪考察不同硼基阻燃剂对竹丝热释放以及烟释放的影响,采用工厂中常用的处理工艺UV涂饰竹丝作和竹丝素材作为对照.结果表明,相对于对照材而言,以硼酸/硼砂为主要成分的阻燃剂可有效降低竹丝的热释放和烟释放,不同阻燃剂成分对竹丝燃烧过程作用差异明显.其中,硼酸:硼砂比例为1:1,经过100OC热水处理的竹丝,在整个燃烧过程中,其
物质焙烧是指生物质原料在隔绝空气(缺氧)条件下，采用温度200℃-300℃而进行的温和热解反应过程。为研究三种竹材焙烧的最佳工艺,采用一体程控高温炉制备不同焙烧温度、保温30min的焙烧炭,并对产品进行工业分析、元素分析、热值等相关参数的测定.结果表明:随着焙烧温度的增加,所得到的竹质焙烧炭的灰分含量增加、挥发分含量下降、固定碳含量增加;不同焙烧工艺对产物研磨性能有影响,焙烧温度的增加产物的出粉率
Poplar samples were impregnated with ammonium polyphosphate fire retardant at various pressures and durations after they were pretreated with microwave heating.The effects of the pressure and duration
本研究系统了超声处理对酸解法制备纤维素纳米晶体的产率、尺寸和分子结构的影响.结果表明,酸解过程中辅助超声处理仅可在较短水解时间内显著提高纤维素纳米晶体的产率,并将造成纤维素纳米晶体长度降低及其尺寸分布变窄.当水解时间较长时,超声处理将造成纤维素纳米晶体内分子内/间氢键作用的部分解离,导致纤维素纳米晶体(200)晶面的部分剥离及其分子排列的无序化,这也造成了纤维素纳米晶体宽度和厚度的降低.研究结果将