Utilization of waste tyres pyrolysis oil vapour in the synthesis of Zeolite Templated Carbons (ZTCs) for hydrogen storage application

Abstract

In this study, we investigated the potential for use of waste tyre pyrolysis oil vapour as a carbon precursor in the synthesis of zeolite templated carbons (ZTC). With Zeolite 13X as the template, the ZTCs were synthesised using two methods namely: 1-step process which involved the carbonization of gaseous carbon precursor in the zeolite template (in this case, ethylene and pyrolysis oil vapour) and the 2-step synthesis method involved the impregnation of zeolite pores with furfural alcohol prior to carbonization of the gaseous carbon precursor. The replication of the zeolite 13X structural ordering was successful using both methods. The 2-step synthesized ZTCs were found to possess the highest specific surface area (3341 m g) and also had the highest H storage capacity (2.5 wt.%). The study therefore confirmed an additional novel strategy for value-addition of waste tyre pyrolysis by-products.

Polymer-Based Shaping Strategy for Zeolite Templated Carbons (ZTC) and Their Metal Organic Framework (MOF) Composites for Improved Hydrogen Storage Properties

“…The observed crystallinity complement the respective SEM image (Figure 4d), showing highly defined octahedral shaped crystals with sharp edges as an attribute of the presence of 100 equivalent of modulator (formic acid) used during their synthesis. The ZTC sample showed a diffraction peak at 6.2 • 2-theta similar to that of the zeolite 13X template, indicating a replication of zeolite 13X-type structural pore ordering in ZTC and also confirms successful templating process (Xia et al, 2011;Musyoka et al, 2018). After incorporating the UiO-66 (Zr) and ZTC into the PIM-1 matrix to obtain PIM-1/80 wt%UiO-66(Zr) and PIM-1/80 wt% ZTC composites materials, the characteristics peaks of fillers were still present and dominant.…”

Modulating the porosity of carbons for improved adsorption of hydrogen, carbon dioxide, and methane: a review

“…High H2 storage capacity of 2.5 wt.% was achieved at -196 o C and 1 bar. 349 Although H2 adsorption was not measured above atmospheric pressure, both the ZTC textural characteristics and the trajectory of the reported isotherm indicate this carbon may be suited to higher pressure applications.…”

“…In fact since 2018 there exist only nine journal articles on the subject of capture/storage of these molecules in ZTCs. 14,[258][259][346][347][348][349][350][351] Furthermore, of these papers two are based on simulations of hypothetical optimized ZTCs. 259,346 While these provide insights into what an optimal ZTC structure might be for these applications, they do not provide novel methods for modulating ZTC porosity.…”

Analisis Molekular dan Transpor Ion Natrium Silikat

“…Sebelum mengetahui bagaimana kekuatan hantaran dari molekul Natrium Silikat, terlebih dahulu mengetahui bagaimana pergerakan ion dari kation dan anion yang menyusun senyawa Natrium silikat (100) . Kation disini yaitu Na + dan anionnya yaitu SiO 3 2- (104)(105)(106)(107) .. Setiap ion mempunyai laju yang berbeda-berbeda (108) . Penyebab ion bergerak inilah memiliki konduktivitas molar yang berbeda, serta sebab konduktivitas molar elektrolit kuat berkurang dengan akar konsentrasi (109) .…”