Feasibility of zeolite cold sinteri

Feasibility of zeolite cold sintering was first introduced in this study (Figure e and j). Comparing the initial powder and cold–sintered zeolite Y micrographs(Figure S1b), noticeable microstructure change was observe from initial particle size of 1 µm to neck formation. As shown on the sintered sample micrograph, pore shrinkage was not fully obtained at the given cold sintering conditions, which explains its low density. In fact, dense bulk zeolite Y was previously reported by using hydrothermal sintering process. 16 Although both sintering processes feature reduced processing temperature and applied uniaxial pressure, open system nature of the cold sintering can significantly influence the densification kinetics.Therefore, good understanding of the effect of the densification process variables on the zeolite cold sintering is needed to improve sintering quality at desired microstructure.