Catalytic activity and stability of NiPt/C catalysts for the synthesis of iso-butanol from methanol/ethanol mixtures†

IF 4.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Science & Technology Pub Date : 2024-11-05 DOI:10.1039/d4cy01061b

Joachim Pasel , Johannes Häusler , Ralf Peters , Detlef Stolten

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Abstract

Mixtures of sustainably produced ethanol and methanol can serve as educts for the synthesis of higher alcohols, which are considered carbon-neutral components and feedstocks for the transportation and chemical sectors. In this respect, this study focused on bi-metallic NiPt catalysts supported on activated carbon for the synthesis of iso-butanol. Reaction temperature, time on stream, and the inlet concentration of ethanol were varied to investigate the influence of these parameters on ethanol conversion, the selectivities towards iso-butanol, and other reaction products, as well as the space–time yield of the NiPt/C catalyst. In addition, kinetic parameters were determined. It was found that a reaction temperature of 165 °C was most suitable for the selectivity towards iso-butanol. Activation energies were calculated to the range between 110 kJ mol⁻¹ and 120 kJ mol⁻¹. TEM experiments revealed that there was no ageing of the catalytically active species of the Ni₉₉Pt₁/C catalyst during iso-butanol synthesis.

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NiPt/C催化剂对甲醇/乙醇混合物合成异丁醇的催化活性和稳定性研究

可持续生产的乙醇和甲醇的混合物可以作为合成高级醇的原料，被认为是碳中性成分和运输和化工部门的原料。在这方面，本研究的重点是在活性炭负载的双金属NiPt催化剂上合成异丁醇。研究了不同反应温度、反应时间和乙醇入口浓度对乙醇转化率、对异丁醇的选择性和其他反应产物的影响，以及NiPt/C催化剂的时空产率。此外，还测定了动力学参数。结果表明，反应温度为165℃时对异丁醇的选择性最佳。活化能的计算范围为110 ~ 120 kJ mol−1。TEM实验结果表明，Ni99Pt1/C催化剂在异丁醇合成过程中，催化活性组分未发生老化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Catalysis Science & Technology CHEMISTRY, PHYSICAL-

CiteScore

8.70

自引率

6.00%

发文量

587

审稿时长

1.5 months

期刊介绍： A multidisciplinary journal focusing on cutting edge research across all fundamental science and technological aspects of catalysis. Editor-in-chief: Bert Weckhuysen Impact factor: 5.0 Time to first decision (peer reviewed only): 31 days