Highly Effective Utilization of Microporous Carbon with Structural Regularity of Zeolite

以Y沸石为模板可以合成具有长有序结构的高比表面积微孔碳。在本工作中，我们尝试用其他几种类型的沸石（沸石b、ZSM-5、丝光沸石和沸石L）合成多孔碳。特别关注每种沸石的结构规律是否可以转移到碳结构以及y沸石的情况，然后检查哪种碳填充方法使碳结构具有最高的规律性。结果表明，Y型沸石的最佳碳填充方式与其他沸石的最佳碳填充方式不同，其碳的长程有序规律程度与沸石类型密切相关。所得碳的排列顺序为沸石b >>沸石L >丝光沸石> ZSM-5。沸石类型对其规律性的影响与沸石通道的大小和形状密切相关。由Y沸石制备的微孔碳的非凡特点是中孔体积比微孔体积小，这是作为甲烷储存介质所必需的特性之一。另一个特点是这些碳中以大微孔为主，如超微孔（尺寸在0.7 ~ 2nm之间）。众所周知，理论上这样的大微孔比窄微孔更有利于提高甲烷的储存能力。因此，目前采用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℃条件下，甲烷吸附量为0.255 g/g碳，这可能是目前报道的最大的甲烷吸附量。从实际的角度来看，甲烷吸收量应以单位体积的吸附量来评价。由于目前的碳不能在没有粘合剂的情况下成球，所以在这一阶段没有确定体积摄取。目前正在研究使用粘合剂造粒和测量体积甲烷吸收量。以Y沸石为原料制备的微孔碳不仅在甲烷储存介质中有广泛的应用，而且在超级电容器中也表现出了优异的性能。少

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