日本1993年度活性炭发明专利（一）

综合１９９３年度有关日本活性炭发明专利，论述了制造活性炭的方法与设备及制造商品质活性炭的方法。     

废糖用粉状活性炭临时造粒石灰石(二氧化碳)再生试验研究

一、前言我国葡萄糖脱色用粉状活性炭(以下简称糖炭)的产量占整个粉状活性炭产量的一半以上,基本上都是氯化锌活化法活性炭。随着针剂、口服、食品及工业葡萄糖生产的     

隧道活化炉生产氯化锌法活性炭试验

<正> 前言活性炭在第一次世界大战期间仅用于军事,作为防毒面具用的吸附剂。以后逐渐商业化,用于各个工业部门。由于对活性炭的特性和孔径结构理论的加深探讨和生产设备装备的改进,从而提高了产品质量,扩大了产品品种,降低了生产成本,应用领域越来越广,需要量和产量逐年增加。据估计,目前世界活性炭年产量达40万吨以上(美国14万吨,日本6万     

活性炭的制造法与用途

一、活性炭制造法日本探用的活性炭制造方法主要有两种,一种是氯化锌法,一种是水蒸汽法。日本在活性炭年产量(1952年)4900吨当中,用氯化锌法制     

当前国际活性炭生产与贸易展望

文章对活性炭国际市场竞争情况进行了较全面的分析，提供了历史数据和预测情况。详细地介绍了美国、西欧、日本活性炭的供需增长数据和各国间的合作以及全世界活性炭消耗情况。最后结合国内活性炭工业提出了自己的看法。     

日本活性炭生产与应用

我国的活性炭生产规模小,产品品种少,应用领域窄,与世界先进国家比较还有较大的差距。因此,本文介绍了日本活性炭生产技术与应用科研动态,以供我国活性炭生产单位借鉴与参考。日本活性炭工业比较发达,生产能力仅次于美国。1945年后,通过开拓活性炭的新用途,提高产品质量,开发新品种,扩大生产规模等手段得到了巩固和发展。目前,日本主要活性炭生产工厂有16家,年生产能力     

日本1993年度活性炭发明专利（二）

综合了日本１９９３年活性炭发明专利中有关炭分子筛的制法、球状活性炭的制造方法、粘附有活性炭的蜂窝状结构体及其制造方法。     

当前国际活性炭生产与贸易展望

文章对活性炭国际市场竞争情况进行了较全面的分析,提供了历史数据和预测情况。详细地介绍了美国、西欧、日本活性炭的供需增长数据和各国间的合作以及全世界活性炭消耗情况。最后结合国内活性炭工业提出了自己的看法。     

中国林产品化学利用概况

林产品化学利用是指以木质和非木质林产品为原料．经化学加工制备国民经济所需的各种产品。主要包括木材制浆造纸、木质活性炭、松脂化学加工、植物单宁、林产精油、植物提取物等。近年来中国林产化学工业发展较快，特别是建设林纸一体化工程．为发展木材制浆工业，改变中国制浆造纸工业原料结构创造了良好的条件，按计划2005年木浆产量将达380万t,2010年达750万t。松香产量已超过50万t／a，出口约30万t／a。木质活性炭产量达6万t／a。随着我国经济的发展对林化产品的需求将进一步扩大。     

活性炭生产的双热双烟道平炉

介绍一种新型的、水蒸气法活性炭生产的双热双烟平炉。该活化平炉经多年生产应用表明它具有投资省，结构简单，寿命长，产品质量均匀，产量增大等特点。     

活性炭工业的发展及展望

近10年来, 随着活性炭工业的发展和环境污染治理的需求, 世界上有40多个国家生产各种类型的活性炭, 年生产能力约50~75万t.本文着重就活性炭生产技术、新品种及其应用、再生技术和市场动态进行了阐述, 并对活性炭的发展前景进行了展望.     

多孔炭材料吸附CO2研究进展

由CO₂等温室气体排放带来的全球变暖问题是目前最严峻的环境问题之一。因此,利用多孔炭材料作为其高效吸附材料的研究得到了广泛的关注。系统综述了近年来用于CO₂吸附的5种多孔炭材料,即煤/石油焦基活性炭、生物质多孔炭、炭气凝胶、金属有机骨架衍生物和碳纳米材料,以及多孔炭材料主要的4种制备方法(高温炭化与活化法、水热炭化法、溶胶-凝胶法和模板法),并重点讨论其结构与CO₂吸附性能的关系;随后对多孔炭材料的孔结构和表面化学性质吸附CO₂的机理进行总结。最后,提出多孔炭材料吸附CO₂发展过程中尚待解决的问题,并对其未来的发展方向进行了展望。     

快速测定活性炭对环己烷吸附荷量的方法：迎头色谱穿透曲线法

长期以来都是通过测定四氯化碳荷量或吸苯率，来评价用于气相吸附活性炭的吸附性能。由于四氯化碳是剧毒试剂，苯是致癌物质、所以本文改用环己烷作为吸附质，通过测定各种活性炭对环己烷的吸附等温线，详细讲话他环己烷荷量作为评价活性炭吸附性能的条件。并介绍了快速测定活性炭对环己烷的吸附荷量的迎头色谱穿透曲线法。     

Seasonal and interannual variation in net ecosystem production of an evergreen needleleaf forest in Japan

Carbon dioxide (CO₂) flux was measured above the forest at the Fujiyoshida site on the northern slope of Mount Fuji in Japan in 2000?C2008 using an eddy covariance technique. The forest mainly consists of Japanese red pine (Pinus densiflora) and Japanese holly (Ilex pedunculosa). The 9-year average of monthly mean net ecosystem production (NEP) ranged from ?0.1?g?C?m^?2?day^?1 in January to 2.5?g?C?m^?2?day^?1 in May. The maximum net uptake was observed in May, although gross primary production (GPP) was highest in July. Variation in the leaf amount did not notably affect seasonal variation in GPP. This site was characterized by carbon uptake even in winter, if the meteorological conditions were conducive for photosynthesis and a resulting long period of carbon uptake. The 9-year averages of annual NEP, GPP, and ecosystem respiration (RE) were 388, 1,802, and 1,413?g?C?m^?2?year^?1, respectively. The annual NEP was lowest in 2003 and highest in 2004 over the 9?years. Year-to-year variability of NEP mainly depended on air temperature and photosynthetically active radiation in summer, and the dependence of the deviation of annual NEP on that of GPP was greater than that of RE. Long-term observational data indicated that the carbon uptake ability at the study site was at a moderate level in comparison with other temperate humid evergreen forests around the world. These data also indicated that the site had a high carbon uptake ability compared with other deciduous forests in Japan because of the duration of carbon uptake.     

反相气相色谱法研究改性活性炭对甲烷吸附热的影响

采用反相气相色谱技术(IGC)测定了甲烷分子在改性前后活性炭上的保留时间,计算出了改性前后的活性炭的表面吸附热变化,并对不同改性剂的改性效果进行了比较.结果表明,改性前活性炭吸附热为17.75 mol/L,改性后的活性炭吸附热分别为18.74(氧化改性)、18.96(还原改性)、18.43 mol/L(盐改性).改性前...     

Preparation of active carbons from a commercial holm-oak charcoal: study of micro- and meso-porosity

We studied the influence of the degree of gasification and the choice of activating agent (carbon dioxide, water vapour, or both carbon dioxide and water vapour acting successively) on the activation of samples of a commercial holm-oak wood (Quercus rotundifolia) charcoal. To this end, we prepared the active carbon samples using the activating agents at 800, 850, 900, and 950°C for the time required to gasify 20, 40, or 60% of the mass of the charcoal at the moment when the set gasification temperature had been reached. The active carbons were characterised by physical gas adsorption and densimetry. Those prepared with carbon dioxide or water vapour alone had textural characteristics that were better than those of the precursor charcoal. The micropore volume was greater in the samples activated with carbon dioxide than with water vapour. The activation with both carbon dioxide and water vapour successively led to a major increase in porosity, taking into account that these samples presented a 40% burn-off percentage which endowed them with good textural characteristics. In general, as the burn-off percentage increased, so did the micropore and mesopore volumes.To sum up, holm-oak wood is a good raw material, not only to get barbecue coal, which has been used as a precursor to obtain activated coal, but it also allows the activated coal to develop its microporosity and mesoporosity in a good way, which is suitable for new applications as it is absorbent in liquid phase, gas absorbent, is a constituent part of combustible batteries, etc.The main interest of this research is the preparation of activated coal and the determination of the size pore distribution obtained, given its great influence in the quality of the activated coal obtained starting from holm-oak wood, what gives a great economic and industrial value in the Southwest of Spain for this raw material.     

微波处理对活性炭孔隙结构的影响

在高纯氮气的保护下对活性炭在4种不同功率和作用时间下进行了微波改性处理，利用ASAP2010氮气吸附仪和X-射线分析仪测定了活性炭经微波处理后孔隙结构和基本微晶的变化，通过对比分析探讨了微波加热对活性炭孔隙结构的影响。结果表明：微波处理使活性炭比表面积变化不大，孔容稍有缩小，主要变化发生在中孔范围，孔径分布变化不大，只是向小孔方向发生稍微的移动，活性炭基本微晶增大，石墨化程度提高。     

Diamond and pore structure observed in wood charcoal

Conclusions Various carbon structures were observed in the wood charcoal sample: the well known pyrolytic graphite layers, onion-like particles, and diamond structure. It is suggested that wood charcoal carbonized at 700°C is a complex of various carbon structures. The pore structure was observed by electron microscopy, and it is supposed that the microstructure and pores are closely related. Further study of the microstructure during the carbonization process of charcoal is necessary to better understand the characteristic functions of wood charcoal for utilizing it as a source of carbon material.A summary of this study was presented at the 51st annual meeting of the Japan Wood Research Society, Tokyo, April 2001, and the 50th annual meeting of the Society of Materials Science, Osaka, May 2001     

热解活化法制备微孔发达椰壳活性炭及其吸附性能研究

以椰壳为原料,采用热解活化法制备微孔发达活性炭。研究了活化温度、活化时间对活性炭孔结构和吸附性能的影响。实验结果表明:活化温度为900℃,活化时间为4 h,可制得比表面积为994.42 m2/g的微孔发达活性炭,其碘吸附值为1 295 mg/g,亚甲基蓝吸附值为135 mg/g。N2吸附结果表明活性炭的平均孔径在2 nm左右,总孔容积为0.503 9 cm3/g,其中微孔容积为0.430 3 cm3/g,微孔率达85.39%。对该活性炭进行CO2动态吸附实验,CO2饱和吸附容量为56.61 mg/g,在热解活化法制备椰壳过程中,随着活化温度的升高和活化时间的延长,活性炭的得率有不同程度的降低。     

糯米灰浆粘结型富钙成型活性炭的制备及其性能

利用造纸白泥原位物理活化杉木屑制备富钙活性炭粉,考察了制备工艺条件对活性炭粉得率和吸附性能的影响。在富钙活性炭粉中加入糯米浆进行捏合并压制成型,制得糯米灰浆粘结型柱状成型活性炭。在白泥与杉木屑质量比3∶2,950℃活化1.5 h的优化条件下,可制备出比表面积为975 m~2/g、得率约24%的活性炭样品。经300℃热处理1 h后制得的糯米灰浆粘结型富钙成型活性炭,其抗压强度高达18 MPa,碘吸附值为410 mg/g,耐水浸泡性长达60 d以上。SEM和XRD分析结果显示:糯米灰浆粘结成型活性炭中各组分间胶结紧密,且糯米浆对成型活性炭试样中石灰组分的炭化结晶进程具有调控作用。