Highly Effective Utilization of Microporous Carbon with Structural Regularity of Zeolite

沸石结构规则的微孔碳的高效利用

基本信息

批准号：
13650825
负责人：
KYOTANI Takashi
金额：
$ 2.24万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

High surface area microporous carbons with a long-range ordering could be synthesized by using zeolite Y as a template. In this work, an attempt is made to synthesize porous carbon using several other types of zeolites (zeolite b, ZSM-5, mordenite and zeolite L). Special attention is paid to whether the structural regularity of each zeolite can be transferred to carbon structure as well as with the case of zeolite Y. It is then examined which carbon filling method gives the highest regularity to the carbon structure. It has found that the optimum carbon filling method for zeolite Y is not an optimum one for the other zeolites and the degree of the regularity of long-range ordering in the carbons strongly depends on zeolite type. The order of the regularity in the resultant carbons is zeolite b >> zeolite L > mordenite > ZSM-5. The effect of zeolite type on the regularity is closely related to the size and the shape of the zeolite channels.Extraordinary feature of the microporous carbon … More s prepared from zeolite Y is that mesopore volume is quite small in comparison with micropore volume, which is one of the necessary characteristics for methane storage media. Another feature is the predominance of large micropores such as supermicropore (size between 0.7 and 2 nm) in these carbons. It is well-known that theoretically such large micropore is favorable rather than the narrow micropore for high storage capacity of methane. Thus the present microporous carbons prepared by the template technique have great potential as methane storage media.The amounts of methane adsorbed at 3.5 MPa and 25 ℃ were measured to be 0.255 g/g of carbon, which is probably the largest one among the values reported so far. From practical point of view, methane uptake should be evaluated in terms of adsorption per unit volume. Since the present carbons cannot be pelletized without a binder, the volumetric uptake was not determined in this phase. Pelletizing using a binder and the measurement of volumetric methane uptake are now under investigation. As well as the application to methane storage media, the microporous carbons prepared from zeolite Y showed high performance in the application to super capacitor. Less

可以使用沸石y作为模板来合成具有远距离顺序的高表面积微孔碳。在这项工作中，尝试使用其他几种类型的沸石（沸石B，ZSM-5，灰元石和沸石L）进行试图合成多孔碳。特别注意是否可以将每种沸石的结构规律转移到碳结构以及沸石Y的情况下。然后检查哪种碳填充方法为碳结构提供了最高的规律性。它发现，沸石Y的最佳碳填充方法不是其他沸石的最佳碳填充方法，并且碳中的远距离顺序的规律性很大取决于沸石类型。所得碳中规则性的顺序为沸石B >>沸石L> arterite> Mordenite> ZSM-5。沸石类型对规律性的影响与沸石通道的尺寸和形状密切相关。微孔碳的极端特征……从沸石y制备的更多S是，与微孔体积相比，中孔体积很小，这是甲烷储存介质的必要特征之一。另一个特征是这些碳中的大型微孔（例如超级玻璃体（0.7至2 nm））的优势。众所周知，从理论上讲，如此大的微孔是有利的，而不是狭窄的微孔，用于甲烷的高储存能力。该模板技术制备的微孔碳作为甲烷储存介质具有很大的潜力。在3.5 MPa和25℃下吸附的甲烷量为0.255 g/g的碳，这可能是迄今为止报告的值中最大的碳。从实际的角度来看，应根据单位体积的吸附来评估甲烷摄取。由于没有粘合剂就无法使当前的碳颗粒化，因此在此阶段未确定体积摄取。现在正在研究使用粘合剂和体积甲烷摄取的测量。除了对甲烷储存介质的应用外，由沸石y制备的微孔碳在应用到超级电容器的应用中还表现出高性能。较少的