A new polyol synthesis method is described in which CuNi nanoparticles of different Cu/Ni atomic ratios were supported on both carbon and gamma-alumina and compared with Pt catalysts using the reverse water gas shift, RWGS, reaction. All catalysts were highly selective for CO formation. The concentration of CH₄ was less than the detection limit. Cu was the most abundant metal on the CuNi alloy surfaces, as determined by X-ray photoelectron spectroscopy, XPS, measurements. Only one CuNi alloy catalyst, Cu₅₀Ni₅₀/C, appeared to be as thermally stable as the Pt/C catalysts. After three temperature cycles, from 400 to 700°C, the CO yield at 700°C obtained using the Cu₅₀Ni₅₀/C catalyst was comparable to that obtained using a Pt/C catalyst.

中文翻译：

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反向水煤气变换反应用CuNi / C和CuNi / -Al2O3催化剂的合成

描述了一种新的多元醇合成方法，其中将不同Cu / Ni原子比的CuNi纳米颗粒负载在碳和γ-氧化铝上，并使用反向水煤气变换RWGS与Pt催化剂进行比较。所有催化剂对CO形成具有高度选择性。CH ₄的浓度低于检出限。通过X射线光电子能谱法（XPS）测定，Cu是CuNi合金表面上最丰富的金属。仅一种CuNi合金催化剂Cu ₅₀ Ni ₅₀ / C表现出与Pt / C催化剂一样的热稳定性。在400至700°C的三个温度循环后，使用Cu ₅₀ Ni ₅₀获得700°C的CO产率/ C催化剂与使用Pt / C催化剂获得的相当。