在铂/石墨催化剂上通过氮氧化物加氢制备硫酸羟胺 III：合成催化剂时支持物表面的功能化和活性组分的形成

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2024-09-18 DOI:10.1134/S2070050424700144

P. A. Simonov, A. N. Bobrovskaya, V. A. Bobrin, R. I. Kvon, A. V. Bukhtiyarov, N. A. Rudina, A. V. Romanenko

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引用次数: 0

摘要

摘要作者揭示了在制备模型（0.5%铂/锡长石）和工业（0.5%铂/石墨）催化剂时，铂纳米颗粒的形成和碳载体表面化学涂层的各个方面，这些催化剂用于在 H2SO4 溶液中氢化 NO 合成硫酸羟胺。研究表明，在沉积铂的同时，用含氮基团对载体表面进行官能化处理，不仅能确保金属的分散，还能大大提高金属对硫酸羟胺的选择性。据推测，最大选择性是活性位点的特征，即与碳表面含氮配体结合的单个原子或小型铂簇。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Preparing Hydroxylamine Sulfate via the Hydrogenation of NO on Pt/Graphite Catalysts III: Functionalizing the Surfaces of Supports and the Formation of the Active Component when Synthesizing the Catalyst

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The authors reveal aspects of the formation of platinum nanoparticles and chemical coating of carbon support surfaces when preparing model (0.5%Pt/Sibunite) and industrial (0.5%Pt/Graphite) catalysts for synthesizing hydroxylamine sulfate via the hydrogenation of NO in a solution of H₂SO₄. It is shown that functionalizing the surfaces of supports with nitrogen-containing groups while depositing platinum ensures not only the dispersion of metal but a strong increase in its selectivity toward hydroxylamine sulfate. It is assumed that maximum selectivity is characteristic of active sites being single atoms or small platinum clusters bound to the nitrogen-containing ligands of a carbon surface.

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.