SHS and Study of Ni/TiC Catalysts for CO2 Hydrogenation to Methane

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2023-01-09 DOI:10.3103/S1061386222040082

E. V. Pugacheva, S. Ya. Zhuk, R. A. Kochetkov, B. S. Seplyarskii, V. N. Borshch

引用次数: 0

Abstract

Ni/TiC catalysts were produced by SHS from granular Ti + C + Ni mixtures and leaching in NaOH solution followed by stabilization with H₂O₂ solution of intermetallic precursors prepared by SHS from TiC + (Ni + Al) mixtures. Prepared granular and powder catalysts were characterized by XRD, SEM, EDS, and BET method. The catalytic activity of catalysts was determined in the temperature range of 150–400°С using the CO₂ + H₂ mixtures with different Н₂ concentration. It was found that catalyst containing 10 wt % Ni leached from precursor with Ni : Al = 1 : 2 possesses the highest hydrogenating activity at 350°С and 20 vol % H₂.

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CO2加氢制甲烷的SHS及Ni/TiC催化剂的研究

将Ti + (Ni + Al)颗粒状混合物SHS，在NaOH溶液中浸出，然后用H2O2溶液稳定化制备Ni/TiC催化剂。采用XRD、SEM、EDS、BET等方法对制备的颗粒状和粉状催化剂进行了表征。采用不同Н2浓度的CO2 + H2混合物，在150 ~ 400°С温度范围内测定催化剂的催化活性。结果表明，Ni: Al = 1:2的前驱体浸出含10 wt % Ni的催化剂在350°С和20 vol % H2条件下具有最高的加氢活性。

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.