Preparation and Study of TiB2- and TiCB-supported Catalysts with Ni, NiCo, and CoCu Active Phases

IF 0.6 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI:10.3103/S1061386225700141

E. V. Pugacheva, I. M. Bystrova, R. A. Kochetkov, N. I. Abzalov, B. S. Seplyarskii, V. N. Borshch

引用次数: 0

Abstract

NiAl, NiCoAl, and CoCuAl intermetallics on ceramic TiB₂ and TiCB supports were produced through SHS of granular mixtures and used as precursors for preparation of catalysts for CO and propane deep oxidation and CO₂ hydrogenation. The precursors were converted into catalysts by leaching with 20% NaOH solution and stabilization with 10% H₂O₂ solution. The activity and selectivity of catalysts was found to be determined by active phase composition. In CO₂ methanation, NiCo/TiB₂ catalyst gave the highest CO₂ conversion (69.5% at 350°C) with 100% methane selectivity. In addition, NiCo/TiB₂ was shown to the most active in propane oxidation (15.7% conversion at 450°C). 100% CO conversion was observed on catalysts with CoCu active phase at 400°C.

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具有Ni、NiCo和CoCu活性相的TiB2和ticb负载催化剂的制备与研究

通过颗粒混合物SHS法制备TiB2和TiCB陶瓷载体上的NiAl、NiCoAl和CoCuAl金属间化合物，并将其作为制备CO和丙烷深度氧化和CO2加氢催化剂的前驱体。用20% NaOH溶液浸出，10% H2O2溶液稳定，将前驱体转化为催化剂。催化剂的活性和选择性是由活性相组成决定的。在CO2甲烷化反应中，NiCo/TiB2催化剂的CO2转化率最高（350℃时为69.5%），甲烷选择性为100%。此外，NiCo/TiB2在丙烷氧化中表现出最活跃的活性（450℃时转化率为15.7%）。在400℃时，CoCu活性相催化剂的CO转化率达到100%。

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

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.