Highly Effective Utilization of Microporous Carbon with Structural Regularity of Zeolite

以Y型分子筛为模板剂，可以合成具有长程有序结构的高比表面积微孔炭。在这项工作中，我们尝试用几种其他类型的沸石(B型沸石、ZSM-5沸石、丝光沸石和L沸石)来合成多孔炭。重点考察了每种沸石的结构规律性能否转化为碳结构，以及Y沸石的情况，并考察了哪种碳填充方法使碳结构的规律性最高。结果表明，Y型沸石的最佳碳填充方式并不是其他沸石的最佳填充方式，碳的长程有序化的规律性程度强烈依赖于沸石的类型。生成的碳的规律性顺序是：沸石b&gt；沸石L；沸石；丝光沸石&gt；ZSM-5。沸石类型对规律性的影响与沸石孔道的大小和形状密切相关。微孔碳…的特殊特性由Y沸石制备的S更多的是中孔体积比微孔体积小，这是甲烷存储介质的必备特性之一。另一个特征是这些碳中的大微孔占主导地位，如超微孔(尺寸在0.7到2 nm之间)。众所周知，从理论上讲，这种大的微孔比窄的微孔更有利于甲烷的高存储容量。在3.5Mpa和25℃下测得的甲烷吸附量为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，甲烷的吸收应该以单位体积的吸附来评估。由于目前的碳不能在没有粘结剂的情况下进行造粒，因此在这一阶段不能确定体积吸收。使用粘结剂的造粒和体积甲烷吸收的测量目前正在调查中。以Y型分子筛为原料制备的微孔炭在甲烷存储介质中的应用表明，其在超级电容器中的应用具有很高的性能。较少

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