催化作用
X射线光电子能谱
初湿浸渍
甲醇
甲酸甲酯
微乳液
格式化
化学
核化学
摩尔比
纳米颗粒
无机化学
材料科学
化学工程
纳米技术
选择性
有机化学
肺表面活性物质
生物化学
工程类
作者
Víctor G. Baldovino‐Medrano,Glenn Pollefeyt,Vitaliy Bliznuk,Isabel Van Driessche,Éric M. Gaigneaux,Patricio Ruíz,Robert Wojcieszak
出处
期刊:Chemcatchem
[Wiley]
日期:2016-02-17
卷期号:8 (6): 1157-1166
被引量:11
标识
DOI:10.1002/cctc.201501211
摘要
Abstract Methyl formate (MF) is a valuable platform molecule, the industrial production of which is far from being green. In this contribution, TiO 2 ‐supported Pd( z )Pt(1− z ) catalysts were found to be effective in the green synthesis of methyl formate (MF)—at T =323 K and ambient pressure—through methanol (MeOH) oxidation. Two series of catalysts with similar bulk Pd/(Pd+Pt) molar ratios, z , were prepared; one by a water‐in‐oil microemulsion (MicE) method and the other by an incipient wetness impregnation (IWI). The MicE method led to more efficient catalysts owing to a weak influence of z on particle size distributions and nanoparticles composition. Pd( z )Pt(1− z )‐MicE catalysts exhibited strong synergistic effects for MF production but weak synergistic effects for MeOH conversion. The catalytic performance of Pd( z )Pt(1− z )‐MicE was superior to that of Pd( z )Pt(1− z )‐IWI catalysts despite the latter displaying synergetic effects during the reaction. The catalytic behavior of TiO 2 ‐supported Pd( z )Pt(1− z ) catalysts was explained from correlations between XRD, TEM, and X‐ray photoelectron spectroscopy characterizations.
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