Zn Redistribution and Volatility in ZnZrO_x Catalysts for CO₂ Hydrogenation.

ABSTRACT: ZnO-ZrO₂ mixed oxide (ZnZrO_x) catalysts are widely studied as selective catalysts for CO₂ hydrogenation into methanol at high-temperature conditions (300-350 °C) that are preferred for the subsequent in situ zeolite-catalyzed conversion of methanol into hydrocarbons in a tandem process. Zn, a key ingredient of these mixed oxide catalysts, is known to volatilize from ZnO under high-temperature conditions, but little is known about Zn mobility and volatility in mixed oxides. Here, an array of ex situ and in situ characterization techniques (scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), X-ray absorption spectroscopy (XAS), X-ray p

SUBMITTER: Redekop EA 

PROVIDER: S-EPMC10753788 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature