The impact of the crystal size of the template zeolite on the textural properties of resulting Zeolite Templated Carbons was studied using nano- (20 nm) and micron-sized (5 μm) zeolite beta crystals. ZTCs were obtained for both nano- and micron-sized zeolite beta crystals, yet for the micron-sized sample the presence of supermicropores and small mesopores was detected, indicating a higher degree of structural defects during the templating process and hence in the final ZTC. The insights gained from nitrogen physisorption were confirmed by TEM, TGA and XPS. Despite, long range structural order, evidenced by X-ray powder diffraction (XRD) for both, nano- and micron-sized ZTCs was inferred. These results suggests that XRD patterns allow to evidence the well-ordered part of the sample but might not be the method of choice for characterizing the structural quality of ZTCs. Simulated XRD powder patterns allowed to propose a graphene-based nanoribbon structure grown in the zeolite pores as a satisfactory model for ZTCs in beta zeolite.

使用纳米级 (20 nm) 和微米级 (5 μm) 沸石 β 晶体研究了模板沸石的晶体尺寸对所得沸石模板碳的结构特性的影响。纳米和微米级沸石 β 晶体均获得了 ZTC，但对于微米级样品，检测到超微孔和小中孔的存在，表明在模板过程中存在更高程度的结构缺陷，因此在最终的 ZTC 中。TEM、TGA 和 XPS 证实了从氮物理吸附中获得的见解。尽管如此，推断出纳米级和微米级 ZTC 的 X 射线粉末衍射 (XRD) 证明了长程结构有序。这些结果表明 XRD 图案可以证明样品的有序部分，但可能不是表征 ZTC 结构质量的首选方法。模拟的 XRD 粉末图案允许提出在沸石孔中生长的基于石墨烯的纳米带结构，作为 β 沸石中 ZTC 的令人满意的模型。