Acid-base sites synergistic catalysis over Mg-Zr-Al mixed metal oxide toward synthesis of diethyl carbonate.

ABSTRACT: In heterogeneous catalysis processes, development of high-performance acid-base sites synergistic catalysis has drawn increasing attention. In this work, we prepared Mg/Zr/Al mixed metal oxides (denoted as Mg₂Zr _x Al_1-x -MMO) derived from Mg-Zr-Al layered double hydroxides (LDHs) precursors. Their catalytic performance toward the synthesis of diethyl carbonate (DEC) from urea and ethanol was studied in detail, and the highest catalytic activity was obtained over the Mg₂Zr_0.53Al_0.47MMO catalyst (DEC yield: 37.6%). By establishing correlation between the catalytic performance and Lewis acid-base sites measured by NH₃-TPD and CO₂-TPD, it is found that both weak acid site and medium strength b

SUBMITTER: Yan T 

PROVIDER: S-EPMC9077746 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature