银-铜体系单金属和双金属 CunAgm 纳米粒子的催化作用

IF 1.3 4区化学 Q4 CHEMISTRY, PHYSICAL

Kinetics and Catalysis Pub Date : 2024-05-09 DOI:10.1134/s0023158423601158

M. B. Pshenitsyn, O. A. Boeva, A. S. Konopatsky, A. Yu. Antonov, K. N. Zhavoronkova

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引用次数: 0

摘要

摘要这项工作的目的是研究在氕改性和氘氢交换转化反应中，以氧化铝为载体的单金属和双金属纳米颗粒的催化特性。通过比较两种试验反应中样品比催化活性的温度依赖性，得出了不同反应机制的结论。结果表明，与块状金属相比，CunAgm 纳米粒子在低至 -196°C 的较宽温度范围内都具有催化特性。在分子氢的同位素交换化学反应中，观察到了协同效应，这表明了双金属纳米粒子中金属的相互作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Catalysis on Mono- and Bimetallic CunAgm Nanoparticles of the Silver–Copper System

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Catalysis on Mono- and Bimetallic CunAgm Nanoparticles of the Silver–Copper System

Abstract

The purpose of this work was to study the catalytic properties of mono- and bimetallic nanoparticles of the copper–silver system of variable composition supported on aluminum oxide in the conversion reactions of protium modifications and deuterium–hydrogen exchange. From a comparison of the temperature dependences of the specific catalytic activity of samples in the two test reactions, a conclusion on different reaction mechanisms was drawn. It was shown that, compared to the bulk metals, Cu_nAg_m nanoparticles had catalytic properties over a wide temperature range down to –196°C. In the chemical reaction of isotope exchange in molecular hydrogen, a synergistic effect was observed, which indicated the interaction of metals in bimetallic nanoparticles.

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来源期刊

Kinetics and Catalysis 化学-物理化学

CiteScore

2.10

自引率

27.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.