Authors
Mohammadreza Kosari, Kyungho Lee, Chao Wang, Sajjad Rimaz, Shenghui Zhou, Emmerson Hondo, Shibo Xi, Abdul Majeed Seayad, Hua Chun Zeng, Armando Borgna
Publication date
2023/8/15
Journal
Chemical Engineering Journal
Volume
470
Pages
144196
Publisher
Elsevier
Description
Hollow zeolites are normally made by synthesizing parent rigid zeolites form soluble silica-alumina suspension followed by removal of the aluminum-deficient centers, during which the uniformity of hollow zeolites is compromised. Herein, two uniform spherical hollow ZSM-5 (hZSM5) with distinct morphologies, monodispersed (mhZSM5) and networked (nhZSM5), were hydrothermally synthesized using premade Stöber SiO2 spheres along with structure directing agents with and without aluminum. Subsequently, both mhZSM5 and nhZSM5 supports were impregnated with mono- and multimetallic Cu-based catalysts to investigate CO2 hydrogenation with in-depth catalyst characterizations (HRTEM-EDX, Pyridine-FTIR, H2-TPR, XPS, XANES, and DRIFTS). It was evidenced that uniform and decent morphology of mhZSM5 spheres arises from the existence of framework-intrinsic Al3+. Besides, it was revealed that …
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