Fine-tuning the chemical state and acidity of ceria incorporated in hierarchical zeolites for ethanol dehydration

Abstract

The chemical state and acidity of ceria incorporated in hierarchical zeolites have been successfully tuned due to the presence of hierarchical structures of zeolite nanosheets and interaction between ceria and...

Bioethanol Upgrading to Renewable Monomers Using Hierarchical Zeolites: Catalyst Preparation, Characterization, and Catalytic Studies

“…Typically, there are two conventional methods for adding metals to zeolite supports, which are ion-exchange and impregnation strategies. Recently, the cerium metal was loaded on the hierarchical MFI zeolite via these two methods [53]. For the ion-exchange strategy, the MFI zeolite was mixed and stirred with an aqueous solution of cerium (III) acetate.…”

Hierarchical Zeolites‐confined Metal Catalysts and Their Enhanced Catalytic Performances

“…Based on these synthesis strategy, a series of metal@hierarchical zeolites catalysts with various metals and different topology hierarchical zeolites were reported in the literature. [54,[58][59][60][61][62][63][97][98][99] Typically, Yu and co-workers reported a facile kinetic-modulated crystallization strategy with the assistance of amino acid to fabricate single-crystalline hierarchical ZSM-5 zeolite containing intracrystalline mesopores with a diameter of 38 nm (Figure 5a). Subsequently, Ni NPs were supported on the hierarchical zeolite (Ni/ZSM-5-H) to evaluate the catalytic performance in hydrodeoxygenation reactions (HDO) stearic acid.…”

Synergy of Extraframework Al3+ Cations and Brønsted Acid Sites on Hierarchical ZSM-5 Zeolites for Butanol-to-Olefin Conversion

“…Butenes are one of the most important raw chemicals in the production of fuel, fuel additives, commodity polymers, and so forth. − Typically, butenes can be obtained from petroleum-based feedstocks, renewable biomass-derived γ-valerolactone, the selective hydrogenation of 1,3-butadiene, the ethanol-to-butene process, − and the butanol-to-butene process. ,− Among them, renewable biomass-derived alcohols have emerged as one ideal candidate because they can be produced from biomass fermentation on a large scale. ,− The conversion of lower alcohols such as methanol and ethanol to olefin has been investigated recently. − However, because of the health hazards of C1–C2 alcohols, more attention should be paid toward the dehydration process of higher alcohols such as biobutanol. ,,− …”